Buchnera
Aphids
Symbiosis
Anthranilate Synthase
Luteovirus
Serratia
Evolution, Molecular
Gammaproteobacteria
Amino Acids, Essential
Chaperonin 60
A group I chaperonin protein that forms the barrel-like structure of the chaperonin complex. It is an oligomeric protein with a distinctive structure of fourteen subunits, arranged in two rings of seven subunits each. The protein was originally studied in BACTERIA where it is commonly referred to as GroEL protein.
Peas
Luteoviridae
Hemiptera
Vicia faba
A plant species of the genus VICIA, family FABACEAE. The edible beans are well known but they cause FAVISM in some individuals with GLUCOSEPHOSPHATE DEHYDROGENASE DEFICIENCY. This plant contains vicine, convicine, Vicia lectins, unknown seed protein, AAP2 transport protein, and Vicia faba DNA-binding protein 1.
Biotin
Pyruvate Carboxylase
Pimelic Acids
Carbon-Nitrogen Ligases
Hemiterpenes
Dimethylallyltranstransferase
An enzyme that, in the pathway of cholesterol biosynthesis, catalyzes the condensation of isopentenyl pyrophosphate and dimethylallylpyrophosphate to yield pyrophosphate and geranylpyrophosphate. The enzyme then catalyzes the condensation of the latter compound with another molecule of isopentenyl pyrophosphate to yield pyrophosphate and farnesylpyrophosphate. EC 2.5.1.1.
Genotype
Insects
The class Insecta, in the phylum ARTHROPODA, whose members are characterized by division into three parts: head, thorax, and abdomen. They are the dominant group of animals on earth; several hundred thousand different kinds having been described. Three orders, HEMIPTERA; DIPTERA; and SIPHONAPTERA; are of medical interest in that they cause disease in humans and animals. (From Borror et al., An Introduction to the Study of Insects, 4th ed, p1)
Wolbachia
Genome
Gene Transfer Techniques
The introduction of functional (usually cloned) GENES into cells. A variety of techniques and naturally occurring processes are used for the gene transfer such as cell hybridization, LIPOSOMES or microcell-mediated gene transfer, ELECTROPORATION, chromosome-mediated gene transfer, TRANSFECTION, and GENETIC TRANSDUCTION. Gene transfer may result in genetically transformed cells and individual organisms.
Wigglesworthia
A genus of gram-negative, rod-shaped bacteria in the family ENTEROBACTERIACEAE. They exist only as primary endosymbionts of five species of TSETSE FLIES, found in specialized organelles called mycetomes. The bacteria supply crucial B vitamins (VITAMIN B COMPLEX) which the flies require for fertility.
Operon
Amino Acids
Bacteria
One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
Replicon
Plasmids
PubMed
A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.
Publishing
MEDLINE
Serial Publications
Biological Science Disciplines
All of the divisions of the natural sciences dealing with the various aspects of the phenomena of life and vital processes. The concept includes anatomy and physiology, biochemistry and biophysics, and the biology of animals, plants, and microorganisms. It should be differentiated from BIOLOGY, one of its subdivisions, concerned specifically with the origin and life processes of living organisms.
Phosphocarrier proteins in an intracellular symbiotic bacterium of aphids. (1/120)
A GroEL homolog produced by Buchnera, an intracellular symbiotic bacterium of aphids, is not only a molecular chaperone but also a novel phosphocarrier protein, suggesting that this protein plays a role in a signal transducing system specific to bacteria living in an intracellular environment. This prompted us to look into phosphocarrier proteins of Buchnera that may be shared in common with other bacteria. As a result, no evidence was obtained for the presence of sensor kinases of the two-component system in Buchnera, which are found in many bacteria. It is possible that the lack of sensor kinases is compensated for by the mulitifunctional GroEL homolog in this symbiotic bacteria. In contrast, we successfully identified three phosphotransferase system genes, ptsH, ptsI, and crr in Buchnera, and provide evidence for their active expression. While the deduced amino acid sequences of these gene products, histidine-containing phosphocarrier protein, Enzyme I, and Enzyme III were similar to their counterparts in Escherichia coli, the predicted isoelectric points of the Buchnera proteins were strikingly higher. It was also suggested that Buchnera Enzyme I, when produced in E. coli, is able to accept the phosphoryl group from phosphoenolpyruvate, but not from ATP. (+info)Sequence evolution in bacterial endosymbionts having extreme base compositions. (2/120)
A major limitation on ability to reconstruct bacterial evolution is the lack of dated ancestors that might be used to evaluate and calibrate molecular clocks. Vertically transmitted symbionts that have cospeciated with animal hosts offer a firm basis for calibrating sequence evolution in bacteria, since fossils of the hosts can be used to date divergence events. Sequences for a functionally diverse set of genes have been obtained for bacterial endosymbionts (Buchnera) from two pairs of aphid host species, each pair diverging 50-70 MYA. Using these dates and estimated numbers of Buchnera generations per year, we calculated rates of base substitution for neutral and selected sites of protein-coding genes and overall rates for rRNA genes. Buchnera shows homogeneity among loci with regard to synonymous rate. The Buchnera synonymous rate is about twice that for low-codon-bias genes of Escherichia coli-Salmonella typhimurium on an absolute timescale, and fourfold higher on a generational timescale. Nonsynonymous substitutions show a greater rate disparity in favor of Buchnera, a result consistent with a genomewide decrease in selection efficiency in Buchnera. Ratios of synonymous to nonsynonymous substitutions differ for the two pairs of Buchnera, indicating that selection efficiency varies among lineages. Like numerous other intracellular bacteria, such as Rickettsia and Wolbachia, Buchnera has accumulated amino acids with codons rich in A or T. Phylogenetic reconstruction of amino acid replacements indicates that replacements yielding increased A + T predominated early in the evolution of Buchnera, with the trend slowing or stopping during the last 50 Myr. This suggests that base composition in Buchnera has approached a limit enforced by selective constraint acting on protein function. (+info)Identifying the determinants in the equatorial domain of Buchnera GroEL implicated in binding Potato leafroll virus. (3/120)
Luteoviruses avoid degradation in the hemolymph of their aphid vector by interacting with a GroEL homolog from the aphid's primary endosymbiotic bacterium (Buchnera sp.). Mutational analysis of GroEL from the primary endosymbiont of Myzus persicae (MpB GroEL) revealed that the amino acids mediating binding of Potato leafroll virus (PLRV; Luteoviridae) are located within residues 9 to 19 and 427 to 457 of the N-terminal and C-terminal regions, respectively, of the discontinuous equatorial domain. Virus overlay assays with a series of overlapping synthetic decameric peptides and their derivatives demonstrated that R13, K15, L17, and R18 of the N-terminal region and R441 and R445 of the C-terminal region of the equatorial domain of GroEL are critical for PLRV binding. Replacement of R441 and R445 by alanine in full-length MpB GroEL and in MpB GroEL deletion mutants reduced but did not abolish PLRV binding. Alanine substitution of either R13 or K15 eliminated the PLRV-binding capacity of the other and those of L17 and R18. In the predicted tertiary structure of GroEL, the determinants mediating virus binding are juxtaposed in the equatorial plain. (+info)Prephenate dehydratase from the aphid endosymbiont (Buchnera) displays changes in the regulatory domain that suggest its desensitization to inhibition by phenylalanine. (4/120)
Buchnera aphidicola, the prokaryotic endosymbiont of aphids, complements dietary deficiencies with the synthesis and provision of several essential amino acids. We have cloned and sequenced a region of the genome of B. aphidicola isolated from Acyrthosiphon pisum which includes the two-domain aroQ/pheA gene. This gene encodes the bifunctional chorismate mutase-prephenate dehydratase protein, which plays a central role in L-phenylalanine biosynthesis. Two changes involved in the overproduction of this amino acid have been detected. First, the absence of an attenuator region suggests a constitutive expression of this gene. Second, the regulatory domain of the Buchnera prephenate dehydratase shows changes in the ESRP sequence, which is involved in the allosteric binding of phenylalanine and is strongly conserved in prephenate dehydratase proteins from practically all known organisms. These changes suggest the desensitization of the enzyme to inhibition by phenylalanine and would permit the bacterial endosymbiont to overproduce phenylalanine. (+info)Decoupling of genome size and sequence divergence in a symbiotic bacterium. (5/120)
In contrast to genome size variation in most bacterial taxa, the small genome size of Buchnera sp. was shown to be highly conserved across genetically diverse isolates (630 to 643 kb). This exceptional size conservation may reflect the inability of this obligate mutualist to acquire foreign DNA and reduced selection for genetic novelty within a static intracellular environment. (+info)Polyamine composition and expression of genes related to polyamine biosynthesis in an aphid endosymbiont, Buchnera. (6/120)
Polyamine composition in an aphid endosymbiotic bacterium, Buchnera sp., was determined by high-performance liquid chromatographic analysis. We found that Buchnera contained virtually only a single polyamine, spermidine. The spermidine content of Buchnera was considerably higher in young aphids and tended to decrease with the age of the host. Expression of speD and speE, whose gene products are key enzymes in the synthesis of spermidine, was analyzed by real-time quantitative reverse transcription-PCR. It was shown that the levels of their mRNAs fluctuated in line with the spermidine content. (+info)Decay of mutualistic potential in aphid endosymbionts through silencing of biosynthetic loci: Buchnera of Diuraphis. (7/120)
Buchnera, the primary bacterial endosymbiont of aphids, is known to provision essential amino acids lacking in the hosts' diet of plant sap. The recent discovery of silenced copies of genes for tryptophan biosynthesis (trpEG) in certain Buchnera lineages suggests a decay in symbiotic functions in some aphid species. However, neither the distribution of pseudogenes among lineages nor the impact of this gene silencing on amino-acid availability in hosts has been assessed. In Buchnera of the aphid Diuraphis noxia, tandem repeats of these pseudogenes have persisted in diverse lineages, and thpEG pseudogenes have originated at least twice within this aphid genus. Measures of amino-acid concentrations in Diuraphis species have shown that the presence of the pseudogene is associated with a decreased availability of tryptophan, indicating that gene silencing decreases nutrient provisioning by symbionts. In Buchnera of Diuraphis, rates of nonsynonymous substitutions are elevated in functional trpE copies, supporting the hypothesis that pseudogene origin and persistence reflect a reduced selection for symbiont biosynthetic contributions. The parallel evolution of trpEG pseudogenes in Buchnera of Diuraphis and certain other aphid hosts suggests that either selection at the host level is not effective or that fitness in these aphids is not limited by tryptophan availability. (+info)Postsymbiotic plasmid acquisition and evolution of the repA1-replicon in Buchnera aphidicola. (8/120)
Buchnera aphidicola is an obligate, strictly vertically transmitted, bacterial symbiont of aphids. It supplies its host with essential amino acids, nutrients required by aphids but deficient in their diet of plant phloem sap. Several lineages of Buchnera show adaptation to their nutritional role in the form of plasmid-mediated amplification of key-genes involved in the biosynthesis of tryptophan (trpEG) and leucine (leuABCD). Phylogenetic analyses of these plasmid-encoded functions have thus far suggested the absence of horizontal plasmid exchange among lineages of Buchnera. Here, we describe three new Buchnera plasmids, obtained from species of the aphid host families Lachnidae and Pemphigidae. All three plasmids belong to the repA1 family of Buchnera plasmids, which is characterized by the presence of a repA1-replicon responsible for replication initiation. A comprehensive analysis of this family of plasmids unexpectedly revealed significantly incongruent phylogenies for different plasmid and chromosomally encoded loci. We infer from these incongruencies a case of horizontal plasmid transfer in Buchnera. This process may have been mediated by secondary endosymbionts, which occasionally undergo horizontal transmission in aphids. (+info)
Postsymbiotic plasmid acquisition and evolution of the repA1-replicon in Buchnera aphidicola
Buchnera - Aphids
Insects | Free Full-Text | Effect of Host Genotype on Symbiont Titer in the Aphid-Buchnera Symbiosis | Notes
Bacterial Genes in the Aphid Genome: Absence of Functional Gene Transfer from Buchnera to Its Host
Partitioning of symbolic bacteria between generations of an insect: a quantitative study of a Buchnera sp. in the pea aphid ...
Aphids evolved novel secreted proteins for symbiosis with bacterial endosymbiont. | Janelia Research Campus
Regulation of Transcription in a Reduced Bacterial Genome: Nutrient-Provisioning Genes of the Obligate Symbiont Buchnera...
KEGG PATHWAY: Terpenoid backbone biosynthesis - Buchnera aphidicola JF98 (Acyrthosiphon pisum)
pgi - Glucose-6-phosphate isomerase - Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp) - pgi gene & protein
Intraspecific phylogenetic congruence among multiple symbiont genomes | Proceedings of the Royal Society of London B:...
Amino acid metabolisms complementary to Buchnera - Symbiotic Bacteria
50 Million Years of Genomic Stasis in Endosymbiotic Bacteria | Science
Cinara stammelus
Описание тега aphids - Kettlegalaxy
Genome sequence of the pea aphid Acyrthosiphon pisum
Toxicity of lectins and processing of ingested proteins in the pea aphid Acyrthosiphon pisum - Institut National de Recherche...
Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon pisum symbiotic bacterium)
Two developmental switch points for the wing polymorphisms in the pea aphid Acyrthosiphon pisum
European Journal of Entomology: Differential accumulation of energy by the colour morphs of the pea aphid Acyrthosiphon pisum ...
European Journal of Entomology: Differential accumulation of energy by the colour morphs of the pea aphid Acyrthosiphon pisum ...
Pea Aphids - Acyrthosiphon pisum | Delta Valley Farm
KEGG PATHWAY: Biotin metabolism - Buchnera aphidicola APS (Acyrthosiphon pisum)
Strategies used by two apterous strains of the pea aphid Acyrthosiphon pisum for passive dispersal | Biology Open
Diversity of bacteria associated with natural aphid populations - White Rose Research Online
Strong Heterogeneity in Nucleotidic Composition and Codon Bias in the Pea Aphid (Acyrthosiphon pisum) Shown by EST-Based Coding...
CBGP-GAS slideshows
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Circadian clock and photoperiodism in the pea aphid Acyrthosiphon pisum
Evaluating Vector-Virus-Yield Interactions for Peas and Lentils under Climatic Variability: A Limited Dependent Variable...
EDEN Evo-Devo-Eco Network
Acyrthosiphon pisum - Wikipedia
Genome size - Wikipedia
Gut Bacteria Cospeciating with Plataspid stinkbug
Insects | Free Full-Text | Comparative Analysis of Intra- and Inter-Specific Genomic Variability in the Peach Potato Aphid,...
Differential gene expression in viviparous versus oviparous development in the pea aphid, Acyrthosiphon pisum : Summer...
Psymbionts a touchstone of molecular phylogenetics - Symbiotic Bacteria
Publications | Bioinformatics and Genomics @ CRG
Conifer Aphids - TreeAbility Cinara cupressivora hedge browning patch
Endocytobiology III. Papers Presented at the International Colloquim on Endocytobiology Held in New York, New York on June 10...
Ginkgo Organic Gardens: Aphid Invasion
Parasitised aphids - Stock Image C003/5811 - Science Photo Library
Aphids
How To Get Ride Of Aphids In My Landscaping?
control aphids Archives - The Woodland Elf
Met 52 stops Root Aphids | THCFarmer Community
Small Things Considered: Good Guys, Bad Guys
Evolutionary conservation of candidate osmoregulation genes in plant phloem sap-feeding insects - Lancaster EPrints
Evolutionary replacement of obligate symbionts in an ancient and diverse insect lineage - Koga - 2013 - Environmental...
Identification of the main venom protein components of Aphidius ervi, a parasitoid wasp of the aphid model Acyrthosiphon pisum ...
Serratia symbiotica - Wikipedia
Sublethal effects of thiacloprid and eforia on life table and detoxification enzymes activity of Schizaphis graminum and...
A protein from the salivary glands of the pea aphid, Acyrthosiphon pisum, is essential in feeding on a host plant | PNAS
144506-14-9 | High-Throughput Screen for the Chemical Inhibitors
Efficacy of Botanical Insecticides against the Pea Aphid, |i|Acyrthosiphon pisum|/i| (Harris) and Effect on Some of Its Natural...
Bacterial Protein In Aphid Saliva Triggers Plant Defense Against Aphids - Redorbit
Difference between revisions of Hamiltonella defensa - microbewiki
Grain aphid clones vary in frost resistance, but this trait is not influenced by facultative endosymbionts - Oxford Neuroscience
ASMscience | Soil Bacteria
Genome-wide annotation and functional identification of aphid GLUT - like sugar transporters | BMC Genomics | Full Text
Acyrthosiphon loti (green trefoil aphid) identification, images, ecology, control
Symbiose Project Team - INRIA/Irisa - Fabrice LEGEAI
pea aphid | Bioinformatics and Genomics @ CRG
Its Time to Watch For Pea Aphids in Alfalfa | Dairy Herd Management
Giant willow aphid
Secrets of the pea aphid unveiled - University of Copenhagen
Pea Aphids - Anyone using them ? - Page 4 - Dart Den
Root Aphids Symptoms | Home Guides | SF Gate
MOUND: The Aphid Trap
Using Genomics to Deliver Natural Products from Symbiotic Bacteria
Aphids Removal | Gardening Central
Aphids-Synonyms Of Aphids | Aphids - (সমার্থক, প্রতিশব্দ)
Ants And Aphids Close-Up 2 by illych | VideoHive
Funky siphunculi: aphid off Buddleia | Observation | UK and Ireland | iSpot Nature
Aphid update | Seeds & Stones
Endosymbiotic theory
Aphids
Eat up all of your Brussels sprouts -- unless youre an aphid
Aphid up close & personal. - Old forums for photomacrography.net
How to control aphids in wheat
Ladybugs can consume 1,000 aphids per day | Battlefords News-Optimist
Aphid - HOMEGROWN Discussions - HOMEGROWN
Aphids
John Fraser (botanist)
Buchnera pedunculata. Calycanthus glaucus, Bot. Reg. t. 404. - laevigatus, Bot. Reg. t. 481. Carex Fraseriana, Bot. Mag. t. ...
List of plants of Burkina Faso
Buchnera bowalensis A.Chev. Buchnera capitata Benth. Buchnera hispida Buch.-Ham. ex D.Don Buchnera leptostachya Benth. ...
List of Australian plant species described by Robert Brown
Buchnera asperata R.Br. Buchnera gracilis R.Br. Buchnera linearis R.Br. Buchnera ramosissima R.Br. Buchnera tenella R.Br. ... Buchnera tetragona R.Br. Buchnera urticifolia R.Br. Bulbine bulbosa (R.Br.) Haw. Bulbine semibarbata (R.Br.) Haw. Burchardia ...
Minimal genome
Examples include species of Buchnera, Chlamydia, Treponema, Mycoplasma, and many others. One of the most reduced genomes in ... "Extreme genome reduction in Buchnera spp.: Toward the minimal genome needed for symbiotic life". Proceedings of the National ...
Alfonso Valencia
"Reductive genome evolution in Buchnera aphidicola". Proceedings of the National Academy of Sciences. 100 (2): 581-6. Bibcode: ...
Hologenome theory of evolution
One can consider the variant Buchnera genomes as alleles for the larger hologenome. The association between Buchnera and aphids ... Gil R, Sabater-Muñoz B, Latorre A, Silva FJ, Moya A (April 2002). "Extreme genome reduction in Buchnera spp.: toward the ... They rely on their Buchnera endosymbiotic population for essential amino acids, supplying in exchange nutrients as well as a ... The pea aphid Acyrthosiphon pisum maintains an obligate symbiotic relationship with the bacterium Buchnera aphidicola, which is ...
List of sequenced bacterial genomes
2003). "Reductive genome evolution in Buchnera aphidicola". Proc. Natl. Acad. Sci. U.S.A. 100 (2): 581-6. Bibcode:2003PNAS..100 ... 2000). "Genome sequence of the endocellular bacterial symbiont of aphids Buchnera sp. APS". Nature. 407 (6800): 81-6. Bibcode: ...
Vertical transmission
Buchnera, synthesize the needed ones in an obligate relationship. The head louse (Pediculus humanus) has an obligate symbiotic ... Wernegreen, J. J.; Moran, N. A. (1999-01-01). "Evidence for genetic drift in endosymbionts (Buchnera): analyses of protein- ... Buchnera symbiotic system". Proceedings of the National Academy of Sciences. 115 (8): E1819-E1828. doi:10.1073/pnas.1720237115 ...
Bacterial genome
One exception is the Buchnera, an obligate maternally transmitted symbiont of aphids. It retains 54 genes for biosynthesis of ... Other examples are Rickettsia, Buchnera aphidicola, and Borrelia burgdorferi. Small genome size in such species is associated ...
Proteobacteria
Gammaproteobacteria: Escherichia, Shigella, Salmonella, Yersinia, Buchnera, Haemophilus, Vibrio, Pseudomonas, etc. ...
Mount Rungwe
High-elevation herbs include bracken, Buchnera rungwensis, and Valeriana capensis. Two amphibians (Phrynobatrachus rungwensis ...
Bacteriocyte
In some cases, the bacteria and fungi are transmitted in the egg, as in Buchnera; in others, like Wigglesworthia, they are ... Douglas, A E (1998). "Nutritional interactions in insect-microbial symbioses: Aphids and their symbiotic bacteria Buchnera". ... Buchnera aphidicola. Bacteriocytes of aphids have a subpopulation of the bacteriocytes that is chosen prior to the maternal ... "Bacteriocyte cell death in the pea aphid/Buchnera symbiotic system". Proceedings of the National Academy of Sciences. 115 (8): ...
Genome size
This hypothesis is confirmed by the analysis of the pseudogenes of Buchnera where the number of deletions was more than ten ... Thanks to the similarity among the gene content of Buchnera aphidicola and the enteric bacteria Escherichia coli, 89% identity ... Wernegreen, J. J.; Moran, N. A. (1999-01-01). "Evidence for genetic drift in endosymbionts (Buchnera): analyses of protein- ... Moran, Nancy A.; Mira, Alex (2001-11-14). "The process of genome shrinkage in the obligate symbiont Buchnera aphidicola". ...
Aphid
Buchnera aphidicola gene transcription, although not well understood, is thought to be regulated by a small number of global ... ISBN 978-0-470-11517-6. Whitehead, L. F.; Douglas, A. E. (1993). "A metabolic study of Buchnera, the intracellular bacterial ... Aphids harbour a vertically transmitted (from parent to its offspring) obligate symbiosis with Buchnera aphidicola, the primary ... Buchnera) and a Recent Radiation of Aphids (Uroleucon) and Pitfalls of Testing for Phylogenetic Congruence". Evolution. 54 (2 ...
Endosymbiont
In some cases, the bacteria are transmitted in the egg, as in Buchnera; in others like Wigglesworthia, they are transmitted via ... For example, the putative primary role of Buchnera is to synthesize essential amino acids that the aphid cannot acquire from ... Douglas AE (1998). "Nutritional interactions in insect-microbial symbioses: aphids and their symbiotic bacteria Buchnera". ... and its endosymbiont Buchnera sp. APS, the tsetse fly Glossina morsitans morsitans and its endosymbiont Wigglesworthia ...
Gammaproteobacteria
"Genome sequence of the endocellular bacterial symbiont of aphids Buchnera sp. APS". Nature. 407 (6800): 81-6. Bibcode:2000Natur ...
Genome
"Genome sequence of the endocellular bacterial symbiont of aphids Buchnera sp. APS". Nature. 407 (6800): 81-86. Bibcode: ...
Enterobacteriales - Wikipédia
Enterobacteriales, po slovensky aj enterobaktérie alebo gramnegatívne fakultatívne anaeróbne tyčinky, je rad baktérií s jedinou čeľaďou Enterobacteriaceae. Zahŕňa gramnegatívne, chemoorganotrofné, fakultatívne anaerobné a aerobné baktérie nachádzajúce sa vo vzduchu, vo vode a v pôde. Rozšírené sú v telách živočíchov od bezstavovcov až po človeka Ich rozšírenie je kozmopolitné. Tieto prokaryoty netvoria spóry, len puzdra. Puzdra majú polysacharidový základ, chránia bunku pred faktormi vonkajšieho prostredia, napríklad slnečným žiarením a dezinfekčnými prostriedkami. Kolónie niektorých neopuzdrených mikroorganizmov môžu získať opuzdrenie genetickým procesom transdukcie, takto obalom chránené bakteriálne organizmy sú virulentnejšie. Majú tvar paličiek širokých 0,1 až 1,5 µm. Bunkový pohyb sa uskutočňuje pomocou bičíkov (peritrichne usporiadaných), rad však zahŕňa aj nepohyblivé baktérie, bez bičíkov. Známe sú ich ...
Richard Frank Rand
Buchnera randii S. Moore, Lopholoena randii S. Moore and Harveya randii Hiern. Retiring in 1935 he settled at Brightlingsea, ...
Hamiltonella defensa
It is also dependent on the essential amino acids produced by Buchnera. It is autotrophic for eight out of the ten essential ... amino acids that Buchnera produces. Although dependent, the H. defensa genome preserves more genes and pathways for cell ...
Herbivore
Aphids and Their Symbiotic Bacteria Buchnera". Annual Review of Entomology. 43: 17-37. doi:10.1146/annurev.ento.43.1.17. PMID ...
Acyrthosiphon pisum
Buchnera are housed in specialized, aphid-derived cells located in the hemocoel of the A. pisum body cavity. Each Buchnera cell ... Buchnera is related to Enterobacteriaceae including Escheriachia coli and it is likely that Buchnera evolved from a bacterium ... Phylogenetic analysis shows that Buchnera is a monophyletic group and that the phylogenies of Buchnera and A. pisum coincide. ... pisum and Buchnera receives necessary guanosine. The Buchnera genome has retained genes required for the biosynthesis of ...
Cinara
... cedri has been shown to host three symbionts: Buchnera aphidicola, a secondary symbiont, and bacteria in the genus ... "Coexistence of Wolbachia with Buchnera aphidicola and a secondary symbiont in the aphid Cinara cedri". Journal of Bacteriology ...
Ecology
... a quantitative study of a Buchnera sp. in the pea aphid (Acyrthosiphon pisum) reared at different temperatures". Applied and ...
Serratia symbiotica
In the aphid Cinara cedri, it coexists with Buchnera aphidicola, given the latter cannot produce tryptophan. It is also known ...
Pseudogene
When comparing Buchnera aphidicola and Escherichia coli, it was found that positive epistasis furthers gene loss while negative ... The relationship between epistasis and the domino theory of gene loss was observed in Buchnera aphidicola. The domino theory ...
Nancy A. Moran
By comparing Buchnera, an obligately host-associated bacteria, with closely related free-living bacteria, she demonstrated that ... Initially, Moran and Baumman used 16S ribosomal RNA sequencing to demonstrate that Buchnera aphidicola bacteria and their aphid ... Her seminal research has focused on the pea aphid, Acyrthosiphon pisum and its bacterial symbionts including Buchnera ( ... Buchnera tends to accumulate nonsynonymous, silent mutations, more rapidly, increasing the AT-content of the genome with an ...
Erwiniaceae
Genera in this family include the type genus Erwinia, along with Buchnera, Mixta, Pantoea, Phaseolibacter, Tatumella, and ...
Cospeciation
Among animals, symbiotic cospeciation is seen between Uroleucon (aphids) and Buchnera (plants in the Orobanchaceae), between ... Buchnera) and a recent radiation of aphids (Uroleucon) and pitfalls of testing for phylogenetic congruence". Evolution. 54 (2 ...
Cycnium tubulosum
The genus Cycnium is monophyletic and the sister group of a clade consisting of the genera Buchnera and Striga. Most related to ...
Buchnera - Wikipedia
Buchnera americana - Wikipedia
In Canada, Buchnera americana is only found in "a 10 km (6.2 mi) stretch of the shoreline of Lake Huron in South-western ... Buchnera americana is a perennial flowering plant with underground rhizomes and an above-ground stem. The stem of the plant is ... Buchnera americana has no known medicinal uses. In the garden, this plant is highly attractive to bees, butterflies, and birds ... Buchnera americana is mostly found along the edges of wet depressions, in limestone glades, prairies, moist sandy soils, and ...
Buchnera - Aphids
Buchnera aphidicola, the symbiont of Schizaphis graminum, carries on a plasmid the two genes trpEG which are important in ... The association between Buchnera and aphids is a mutualism, which was probably established 150 to 250 million years ago. At ... Physical and genetic map of the genome of Buchnera, the primary endosymbiont of the pea aphid Acyrthosiphon pisum. J. Mol. Evol ... The Nutritional Symbiosis of Buchnera and Aphids, University of Connecticut-Department of Molecular and Cell Biology. ...
Developmental Origin and Evolution of Bacteriocytes in the Aphid-Buchnera Symbiosis
GroEL from the endosymbiont Buchnera aphidicola betrays the aphid by triggering plant defense | PNAS
... of the Buchnera proteins (21). Because Buchnera are housed within bacteriocytes, the discovery of Buchnera proteins in the ... To conclude, aphid saliva contains proteins of both aphid and endosymbiont Buchnera origins. The presence of Buchnera proteins ... Because a great majority of aphids harbor Buchnera symbionts, we queried whether the Buchnera GroEL is recognized by the plant ... Because Buchnera GroEL sequences from different aphid species are highly conserved (SI Appendix, Fig. S2), we infected ...
A fragile metabolic network adapted for cooperation in the symbiotic bacterium Buchnera aphidicola. - PubMed - NCBI
Schematic layout of the metabolic pathways of Buchnera aphidicola APS illustrating the carbon flow from the main precursors to ... EAA production by Buchnera aphidicola APS. (A) export under different substrate inputs. Equal export under the two models is ... A fragile metabolic network adapted for cooperation in the symbiotic bacterium Buchnera aphidicola.. Thomas GH1, Zucker J, ... We have reconstructed and analysed the metabolic network of the gamma-proteobacterium Buchnera aphidicola (symbiont of the pea ...
Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon pisum symbiotic bacterium)
Buchnera. › Buchnera aphidicola. › Buchnera aphidicola (Acyrthosiphon pisum). Strains i. › APS, APS / Tokyo1998, Tokyo 1998, ... Buchnera aphidicola str. APS (Acyrthosiphon pisum). › Buchnera aphidicola strain APS (Acyrthosiphon pisum). › Buchnera sp. APS ... Taxonomy - Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon pisum symbiotic bacterium) Basket 0 ...
KEGG PATHWAY: Biotin metabolism - Buchnera aphidicola APS (Acyrthosiphon pisum)
Bibliography for "Buchnera candida"- Biodiversity Heritage Library
KEGG PATHWAY: Terpenoid backbone biosynthesis - Buchnera aphidicola JF98 (Acyrthosiphon pisum)
DIGITAL.CSIC: Reductive genome evolution in Buchnera aphidicola
Reductive genome evolution in Buchnera aphidicola. Autor: Ham, Roeland C.H.J. van; Kamerbeek, Judith; Palacios, Carmen ; ... Comparison of the 618-kb (kbp) genome with the two other Buchnera genomes revealed a nearly perfect gene-order conservation, ... This strain diverged 80-150 million years ago from the common ancestor of two previously sequenced Buchnera strains. Here, a ... Extensive genome reduction also predates the synchronous diversification of Buchnera and its host; but, at a slower rate, gene ...
argG - Argininosuccinate synthase - Buchnera aphidicola subsp. Schizaphis graminum (strain Sg) - argG gene & protein
cellular organisms › Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacterales › Erwiniaceae › Buchnera › Buchnera ... sp,Q8KA60,ASSY_BUCAP Argininosuccinate synthase OS=Buchnera aphidicola subsp. Schizaphis graminum (strain Sg) OX=198804 GN=argG ... Buchnera aphidicola subsp. Schizaphis graminum (strain Sg). ,p>This subsection of the ,a href="http://www.uniprot.org/help/ ...
Insects | Free Full-Text | Effect of Host Genotype on Symbiont Titer in the Aphid-Buchnera Symbiosis | Notes
... and that the number of bacteriocytes within an aphid is one factor likely controlling Buchnera titer. Buchnera titer ... We measured the titer of the endosymbiont Buchnera aphidicola from different clones of the pea aphid, Acyrthosiphon pisum, and ... found significant variation in titer, measured as Buchnera genomes per aphid genome, among aphid clones. Additionally, we found ...
Bacterial Genes in the Aphid Genome: Absence of Functional Gene Transfer from Buchnera to Its Host
We found that no functional genes have been transferred from Buchnera, ruling out such transfer as a driving force in genome ... Aphids harbor an ancient coevolved intracellular symbiont, called Buchnera. We used the newly available sequence of the pea ... Based on their expression patterns, most of these appear to function specifically in the aphid-Buchnera symbiosis, presenting ...
Small Things Considered: Symbiont Exchange in the Aphid·Buchnera Symbiosis, Part 1.
Buchnera symbiosis is a favorite model to study or-ga-nel-lo-ge-ne-sis, how a once free-living gammaproteobacterium became an ... The obligate Buchnera aphidicola endosymbiont, found so far in most members of the Aphididae family, has been lost in many ... In C. brasiliensis, the YLS resides both intra- and ex-tra-cel-lu-lar-ly but not in specialized cells - as do the Buchnera in ... For evolutionary biologists, the aphid·Buchnera symbiosis is a favorite model to study or-ga-nel-lo-ge-ne-sis, how a once ...
Buchnera americana - Species Page - ISB: Atlas of Florida Plants
BASIONYM: Buchnera americana Linnaeus 1753. Buchnera angustifolia Buchnera angustifolia Rafinesque, New Fl. 2: 32. 1837 (1836 ... Buchnera breviflora Buchnera breviflora Pennell, in Small, Man. S.E. Fl. 1223, 1508. 1933.. TYPE: FLORIDA: Santa Rosa Co.(?): ... Buchnera floridana Buchnera floridana Gandoger, Bull. Soc. Bot. France 66: 217. 1919.. TYPE: FLORIDA: Polk Co.: Without data, ... Buchnera elongata var. obtusa Buchnera elongata Swartz, var. obtusa Pennell, Proc. Acad. Nat. Sci. Philadelphia 71: 288. 1920. ...
Regulation of Transcription in a Reduced Bacterial Genome: Nutrient-Provisioning Genes of the Obligate Symbiont Buchnera...
To compare the changes in metE transcript levels of Buchnera from A. pisum [Buchnera(Ap)] to those of Buchnera(Sg), we ... Buchnera(Ap), which diverged from Buchnera(Sg) about 60 million years ago (18), lacks metR and retains metE. Thus, if MetR is ... The difference between Buchnera(Sg) and Buchnera(Ap) in the presence and action of metR indicates that loss of regulatory genes ... the genes underlying reduction to sulfide are intact in Buchnera(Ap) but are inactivated as pseudogenes in Buchnera(Sg), ...
Archive ouverte HAL - Systemic analysis of the symbiotic function of Buchnera aphidicola, the primary endosymbiont of the pea...
Buchnera aphidicola is the primary obligate intracellular symbiont of most aphid species. B. aphidicola and aphids have been ... Abstract : Buchnera aphidicola is the primary obligate intracellular symbiont of most aphid species. B. aphidicola and aphids ... Systemic analysis of the symbiotic function of Buchnera aphidicola, the primary endosymbiont of the pea aphid Acyrthosiphon ... Systemic analysis of the symbiotic function of Buchnera aphidicola, the primary endosymbiont of the pea aphid Acyrthosiphon ...
NameThatPlant.net: Buchnera americana
Buchnera americana, American Bluehearts, Prairie Bluehearts, Plains Bluehearts. NameThatPlant.net currently features 3713 ... Buchnera americana FAMILY Scrophulariaceae SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 166-21-001:. Buchnera ... Buchnera americana FAMILY Orobanchaceae LESS THAN PLANTS NATIONAL DATABASE:. ...
Multimodal dynamic response of the Buchnera aphidicola pLeu plasmid to variations in leucine demand of its host, the pea aphid...
... can grow and reproduce thanks to their intimate symbiosis with the γ-proteobacterium Buchnera aphidicola that furnishes them ... Multimodal dynamic response of the Buchnera aphidicola pLeu plasmid to variations in leucine demand of its host, the pea aphid ... Multimodal dynamic response of the Buchnera aphidicola pLeu plasmid to variations in leucine demand of its host, the pea aphid ... can grow and reproduce thanks to their intimate symbiosis with the γ-proteobacterium Buchnera aphidicola that furnishes them ...
Conservation of the links between gene transcription and chromosomal organization in the highly reduced genome of Buchnera...
The effect of Buchnera genome evolution on gene expression levels has also been analysed in order to assess the constraints ... Our analysis showed that mRNA abundances, gene organization (operon) and gene essentiality are correlated in Buchnera (i.e., ... Finally, our results show the existence of spatial periodic transcriptional patterns in the genome of Buchnera. Despite an ... this work reveals a significant correlation between mRNA abundances and chromosomal organization of the aphid-symbiont Buchnera ...
Recombinant Buchnera aphidicola subsp. Acyrthosiphon pisum Protein TusB(tusB) - Cusabio
Buchnera | Profiles RNS
"Buchnera" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical Subject Headings ... This graph shows the total number of publications written about "Buchnera" by people in this website by year, and whether " ... Below are the most recent publications written about "Buchnera" by people in Profiles. ...
Recombinant Buchnera aphidicola subsp. Acyrthosiphon pisum 50S ribosomal protein L5(rplE) - Cusabio
Purchase Recombinant Buchnera aphidicola subsp. Acyrthosiphon pisum 50S ribosomal protein L5(rplE). It is produced in Yeast. ... Recombinant Buchnera aphidicola subsp. Acyrthosiphon pisum 50S ribosomal protein L5(rplE). Recombinant Buchnera aphidicola ... Recombinant Buchnera aphidicola subsp. Acyrthosiphon pisum 50S ribosomal protein L5(rplE),E.coli. ... Recombinant Buchnera aphidicola subsp. Acyrthosiphon pisum 50S ribosomal protein L5(rplE),Mammalian cell. ...
Frontiers | Long-Term Warming Shifts the Composition of Bacterial Communities in the Phyllosphere of Galium album in a...
... and other potential plant or human pathogenic genera such as Acinetobacter and insect-associated Buchnera and Wolbachia spp. ... Buchnera, T5). Buchnera spp. are well known endosymbionts of aphids (Moran et al., 2008). The high relative abundance of ... Buchnera (T5), and Enterobacter (T2). Differences in relative abundances were only significant for Buchnera and Enterobacter, ... The higher relative abundance of Buchnera and Wolbachia on leaves of G. album were an indicator of increased numbers of ...
Amino acid metabolisms complementary to Buchnera - Symbiotic Bacteria
Amino acid metabolisms complementary to Buchnera. Tue, 20 Jun 2017 , Symbiotic Bacteria ... The bacteriocyte is the cell for harboring Buchnera, whose primary role is the synthesis of essential amino acids (Sasaki and ... it is expected that essential amino acids are supplied by Buchnera, whereas nonessential amino acids must be synthesized in ... These results revealed an important aspect of the molecular basis of interdependency between the host and Buchnera . ...
Postsymbiotic plasmid acquisition and evolution of the repA1-replicon in Buchnera aphidicola
Several lineages of Buchnera show adaptation to their nutritional role in the form of plasmid-mediated amplification of key- ... Buchnera aphidicola is an obligate, strictly vertically transmitted, bacterial symbiont of aphids. It supplies its host with ... All three plasmids belong to the repA1 family of Buchnera plasmids, which is characterized by the presence of a repA1-replicon ... Postsymbiotic plasmid acquisition and evolution of the repA1-replicon in Buchnera aphidicola. Ham, Roeland C.H.J. van; Silva- ...
Buchnera aphidicola subsp. Baizongia pistaciae 30S ribosomal protein S3 (rpsC) GENTAUR-58bb066ea8f24 | Gentaursearch
Buchnera aphidicola subsp. Baizongia pistaciae 30S ribosomal protein S3 (rpsC) datasheet and description hight quality product ... Buchnera aphidicola subsp. Baizongia pistaciae 30S ribosomal protein S3 (rpsC). Contact us. ... Baizongia pistaciae 30S ribosomal protein S3 (rpsC), Buchnera aphidicola subsp. Short name: Baizongia pistaciae 30S ribosomal ... Baizongia pistaciae 30S ribosomal protein S3 (rpsC), Recombinant Buchnera aphidicola subsp. Alternative names: 30S ribosomal ...
The tiniest tiny genomes. - PubMed - NCBI
Detection of Buchnera, the primary prokaryotic endosymbiont of aphids, using the polymerase chain reaction. - ScienceOpen
The second is based on a different and unique organization of the ribosomal RNA operons of Buchnera and the close proximity of ... Members of the genus Buchnera constitute a distinct prokaryotic lineage containing the primary endosymbionts of aphids ( ... Detection of Buchnera, the primary prokaryotic endosymbiont of aphids, using the polymerase chain reaction.. Author(s): D ... The endosymbiont (Buchnera) of the aphid Diuraphis noxia contains all the genes of the tryptophan biosynthetic pathway.. ...
AphidsEndosymbiontPisumSymbiosisBacteriumSymbiontsBacteriaEndosymbiontsGenomesRecombinant BuchneraGenesBlueheartsStrainsAmericanaBacteriocytesBaizongiaLineagesAphidicola strEnterobacteriaceaeSpeciesProteinsPlasmidStrainGroELReductiveBASIONYMNonessential amino acidsAphid hostsBiosyntheticProteinGenome sizeBacteriocyte cellsRibosomalAmino acid
Aphids38
- The association between Buchnera and aphids is a mutualism, which was probably established 150 to 250 million years ago. (uconn.edu)
- Aphids are sap-feeding plant pests and harbor the endosymbiont Buchnera aphidicola , which is essential for their fecundity and survival. (pnas.org)
- By mass spectrometry, we identified in saliva from potato aphids ( Macrosiphum euphorbiae ) 105 proteins, some of which originated from Buchnera , including the chaperonin GroEL. (pnas.org)
- Aphids harbor Buchnera aphidicola , an obligate mutualist endosymbiotic γ-Protobacterium that has coevolved with the insect and is essential for its reproduction and survival ( 6 ). (pnas.org)
- Comparison of the 618-kb (kbp) genome with the two other Buchnera genomes revealed a nearly perfect gene-order conservation, indicating that the onset of genomic stasis coincided closely with establishment of the symbiosis with aphids, ≈200 million years ago. (csic.es)
- Buchnera aphidicola , the obligate symbiont of aphids, has an extremely reduced genome, of which about 10% is devoted to the biosynthesis of essential amino acids needed by its hosts. (asm.org)
- Aphids, important agricultural pests, can grow and reproduce thanks to their intimate symbiosis with the γ-proteobacterium Buchnera aphidicola that furnishes them with essential amino acids lacking in their phloem sap diet. (inria.fr)
- We have explored the possible conservation of relationships between mRNA abundances and chromosomal organization in the highly reduced genome of Buchnera aphidicola , the primary endosymbiont of the aphids, and a close relative to Escherichia coli . (biomedcentral.com)
- The effect of Buchnera genome evolution on gene expression levels has also been analysed in order to assess the constraints imposed by the obligate symbiosis with aphids, underlining the importance of some gene sets for the survival of the two partners. (biomedcentral.com)
- Buchnera aphidicola is an obligate, strictly vertically transmitted, bacterial symbiont of aphids. (mediu.edu.my)
- Detection of Buchnera, the primary prokaryotic endosymbiont of aphids, using the polymerase chain reaction. (scienceopen.com)
- Members of the genus Buchnera constitute a distinct prokaryotic lineage containing the primary endosymbionts of aphids (Homoptera: Aphidoidea). (scienceopen.com)
- Comparative analysis of two genomic regions among four strains of Buchnera aphidicola, primary endosymbiont of aphids. (scienceopen.com)
- Aphids harbor an obligate mutualism with the vertically transferred endosymbiont, Buchnera aphidicola , which produces key nutrients lacking in the aphid's phloem-based diet that are necessary for normal development and reproduction. (jgenomics.com)
- One of the best studied cases of such symbiosis is between aphids and their obligate bacterial endosymbiont, Buchnera aphidicola (Proteobacteria: Enterobacteriaceae) ( 6 - 8 ). (jgenomics.com)
- Aphids are dependent on Buchnera to produce some of the essential amino acids, vitamins, and sterols that are necessary for normal development and reproduction ( 10 - 15 ). (jgenomics.com)
- Buchnera aphidicola is an obligate symbiotic bacterium that sustains the physiology of aphids by complementing their exclusive phloem sap diet. (uv.es)
- In this study, we reappraised the transport function of different Buchnera strains, from the aphids Acyrthosiphon pisum, Schizaphis graminum, Baizongia pistaciae and Cinara cedri, using the re-annotation of their transmembrane proteins coupled with an exploration of their metabolic networks. (uv.es)
- Quantitative DNA hybridization was used to measure the population of symbiotic Buchnera bacteria in pea aphids grown at various temperatures. (readabstracts.com)
- Aphids house large populations of the gammaproteobacterial symbiont Buchnera aphidicola in specialized bacteriocyte cells. (nih.gov)
- In aphids, the supply of essential amino acids depends on an ancient nutritional symbiotic association with the gamma-proteobacterium Buchnera aphidicola. (nih.gov)
- Since most aphids harbor Buchnera, and likely have GroEL in their saliva, this bacterial protein may generally alert plants of the presence of aphids. (redorbit.com)
- According to the researchers, since Buchnera-related bacteria are present in a number of insects (other than aphids), their findings are likely to be broadly applicable to other arthropods. (redorbit.com)
- A model of obligate symbiosis is that between aphids and the bacterium Buchnera aphidicola, which supplies essential nutrients. (pubmedcentralcanada.ca)
- Following a short heat exposure as juveniles, aphids bearing short-allele symbionts produced few or no progeny and contained almost no Buchnera, in contrast to aphids bearing symbionts without the deletion. (pubmedcentralcanada.ca)
- Aphids are sap-feeding insects that depend on obligate bacterial symbionts of the genus Buchnera for biosynthesis of needed nutrients. (pubmedcentralcanada.ca)
- Studying Buchnera gene expression in pea aphids, we identified a recurring mutation (a single-base deletion) in the transcriptional promoter of the small heat-shock protein, ibpA . (pubmedcentralcanada.ca)
- the same treatment has little effect on aphids containing Buchnera without the mutation. (pubmedcentralcanada.ca)
- Conversely, at constant lower temperatures, aphids with Buchnera bearing this mutation enjoy a reproductive advantage. (pubmedcentralcanada.ca)
- A model for a heritable, mutually obligate symbiosis is that between aphids and the bacterial symbiont, Buchnera aphidicola, which provisions hosts with essential amino acids that are rare or absent from their phloem sap diet [ 1 , 2 ]. (pubmedcentralcanada.ca)
- Although this intimate mutualism has been critical in enabling aphids to exploit the phloem sap-feeding niche and to diversify onto many plant groups, aphids are constrained by Buchnera 's ecological tolerances. (pubmedcentralcanada.ca)
- It has been known that the obligate symbiont Buchnera provides aphids with essential amino acids which cannot be ingested from plant sap. (asm.org)
- Buchnera often coexists with facultative endosymbionts in aphids. (asm.org)
- For instance, nearly all aphids are infected with Buchnera aphidicola ( 5 ), an obligate endosymbiont localized within specific cells derived from the host, the bacteriocytes ( 5 ). (asm.org)
- In addition to Buchnera , aphids may harbor facultative symbionts that are not essential for host survival. (asm.org)
- Comparison of two fully sequenced genomes of Buchnera aphidicola , the obligate endosymbionts of aphids, reveals the most extreme genome stability to date: no chromosome rearrangements or gene acquisitions have occurred in the past 50 to 70 million years, despite substantial sequence evolution and the inactivation and loss of individual genes. (sciencemag.org)
- We have quantified total rates of genomic evolution for Buchnera aphidicola , an obligate mutualistic symbiont of aphids, by sequencing the genome of the B. aphidicola symbiont of Schizaphis graminum (Sg) ( 1 ) and analyzing its divergence from the published sequence of the B. aphidicola symbiont of Acyrthosiphon pisum (Ap) ( 2 ). (sciencemag.org)
- Aphids accomplish this in part through close interactions with endosymbiont bacteria, Buchnera aphidicola , that are contained in specialized cells called bacteriocytes ( Buchner, 1965 ). (biologists.org)
Endosymbiont8
- A possible role for the Buchnera endosymbiont in plant-aphid interactions has been speculated ( 9 ), but no direct evidence for this interaction exists. (pnas.org)
- Todays Buchnera endosymbionts have reached the stage of mitochondria or chloroplasts - well, almost - and this shines a bright spotlight on Lynn Margulis' famous ' endosymbiont theory ' from 1967. (asmblog.org)
- The obligate Buchnera aphidicola endosymbiont, found so far in most members of the Aphididae family, has been lost in many species of the monophyletic Ce-ra-ta-phi-di-nae subfamily. (asmblog.org)
- Systemic analysis of the symbiotic function of Buchnera aphidicola, the primary endosymbiont of the pea aphid Acyrthosiphon pisum. (archives-ouvertes.fr)
- The endosymbiont (Buchnera) of the aphid Diuraphis noxia contains all the genes of the tryptophan biosynthetic pathway. (scienceopen.com)
- The mutualism between aphid and Buchnera dates back over 200 million years and neither the insect nor its endosymbiont can survive independently ( 9 ). (jgenomics.com)
- The pea aphid genome and other of its features are the focus of studies covering the following areas: Symbiosis with bacteria - As all aphididae, A. pisum hosts the primary endosymbiont Buchnera aphidicola, which provides essential amino acids and is necessary for aphid reproduction. (wikipedia.org)
- This observation is particularly striking in Buchnera , as it is an endosymbiont and so likely has a small effective population size ( N e ). (genetics.org)
Pisum4
- Symbionts ( Buchnera aphidicola ) with-in a bacteriocyte of a pea aphid ( Acyrthosiphon pisum ). (asmblog.org)
- Multimodal dynamic response of the Buchnera aphidicola pLeu plasmid to variations in leucine demand of its host, the pea aphid Acyrthosiphon pisum. (inria.fr)
- Buchnera from A. pisum and S. graminum have a three-membraned system and similar sets of transporters corresponding to most compound classes. (uv.es)
- We report a mutation in Buchnera of the aphid Acyrthosiphon pisum that recurs in laboratory lines and occurs in field populations. (pubmedcentralcanada.ca)
Symbiosis3
- Small Things Considered: Symbiont Exchange in the Aphid·Buchnera Symbiosis, Part 1. (asmblog.org)
- Symbiont Exchange in the Aphid· Buchnera Symbiosis, Part 1. (asmblog.org)
- For the curious evolutionary biologist, this raises the question whether 'symbiont swapping' is also possible for the highly in-ti-ma-te aphid· Buchnera symbiosis. (asmblog.org)
Bacterium5
- Buchnera may refer to: Buchnera (bacterium), a genus of proteobacteria Buchnera (plant), a plant genus from the family Orobanchaceae This disambiguation page lists articles about distinct genera with the same name. (wikipedia.org)
- A fragile metabolic network adapted for cooperation in the symbiotic bacterium Buchnera aphidicola. (nih.gov)
- Buchnera, the bacterium, benefits also because it cannot grow outside the aphid. (redorbit.com)
- But another example of such transfer to an endosymbionts has recently been uncoveredby Nakabachi and collaborators in the relatively well-studied pea aphid and its symbiotic bacterium, Buchnera aphidicola . (asmblog.org)
- The Buchnera lacks these seven sequences, thus their products may well be essential for the bacterium. (asmblog.org)
Symbionts4
- Some of these amino acids cannot be synthesized by the insect but are supplied by the intracellular symbionts Buchnera aphidicola. (uconn.edu)
- We have reconstructed and analysed the metabolic network of the gamma-proteobacterium Buchnera aphidicola (symbiont of the pea aphid) as a model for using systems-level approaches to discover key traits of symbionts with small genomes. (nih.gov)
- These and other degenerative genomic features are discussed in light of compensatory processes and theoretical predictions on the long-term evolutionary fate of symbionts like Buchnera. (csic.es)
- The former comparisons might include intracellular pathogens Mycobacteria, Chlamydia, Rikettsia) and/or symbionts (Buchnera) of eukaryotes, to identify shared genome traits. (powershow.com)
Bacteria4
- A computational study of protein folding predicts that proteins in Buchnera, as well as proteins of other intracellular bacteria, are generally characterized by smaller folding efficiency compared with proteins of free living bacteria. (csic.es)
- Although metabolic analyses revealed high interdependencies between the host and the bacteria, we demonstrate here that transport in Buchnera is assured by low transporter diversity, when compared to free-living bacteria, being mostly based on a few general transporters, some of which probably have lost their substrate specificity. (uv.es)
- Partitioning of symbolic bacteria between generations of an insect: a quantitative study of a Buchnera sp. (readabstracts.com)
- In one case, a consortium of bacteria provided tryptophan to the aphid host with some necessary genes in the Buchnera genome and others in the Serratia genome ( 10 ). (asm.org)
Endosymbionts1
- Thus, these predominant dietary amino acids are not passed directly to Buchnera endosymbionts for synthesis of essential amino acids, but are rather are produced de novo , most likely by endogenous aphid enzymes. (biologists.org)
Genomes3
- These constraints are potentially severe because Buchnera genomes are highly reduced and show no incidence of recombination or gene acquisition [ 3 ], reflecting strict clonality and maternal transmission for over 100 million years [ 4 ]. (pubmedcentralcanada.ca)
- Nevertheless, although their genomes represent a subset of the genome of their ancestors, these gamma-proteobacteria remain closely related to Escherichia coli (98% of the genes in Buchnera have clear orthologues in E. coli ). (biomedcentral.com)
- found strong evidence for sequence conservation within IGRs of eight Buchnera genomes. (genetics.org)
Recombinant Buchnera1
- Recombinant Buchnera aphidicola subsp. (cusabio.com)
Genes5
- Buchnera aphidicola, the symbiont of Schizaphis graminum, carries on a plasmid the two genes trpEG which are important in tryptophan synthesis. (uconn.edu)
- Our analysis showed that mRNA abundances, gene organization (operon) and gene essentiality are correlated in Buchnera (i.e., the most expressed genes are essential genes organized in operons) whereas no link between mRNA abundances and gene strand bias was found. (biomedcentral.com)
- Several lineages of Buchnera show adaptation to their nutritional role in the form of plasmid-mediated amplification of key-genes involved in the biosynthesis of tryptophan (trpEG) and leucine (leuABCD). (mediu.edu.my)
- The inventory of metabolic genes in the pea aphid genome suggests that there is extensive metabolite exchange between the aphid and Buchnera, including sharing of amino acid biosynthesis between the aphid and Buchnera. (whiterose.ac.uk)
- Interestingly, none of these transcribed genes are from Buchnera , but rather are from other bacterial groups, possibly Alphaproteobacteria ( Buchnera is a Gammaproteobacterium). (asmblog.org)
Bluehearts2
- Buchnera americana, commonly known as American bluehearts or bupleurum, is a locally endangered herbaceous perennial plant of the broomrape family Orobanchaceae. (wikipedia.org)
- Update COSEWIC status report on the bluehearts Buchnera americana in Canada, in COSEWIC assessment and update status report on the bluehearts Buchnera americana in Canada. (wikipedia.org)
Strains3
- This strain diverged 80-150 million years ago from the common ancestor of two previously sequenced Buchnera strains. (csic.es)
- The genome of Buchnera has been sequenced in several aphid strains but little genomic data is currently available for the soybean aphid ( Aphis glycines ), one of the most important pests of soybean in North America. (jgenomics.com)
- In this study, DNA sequencing was used to assemble and annotate the genome sequence of the Buchnera A. glycines strain and to reconstruct phylogenetic relationships among different strains. (jgenomics.com)
Americana4
- Buchnera americana is a perennial flowering plant with underground rhizomes and an above-ground stem. (wikipedia.org)
- Buchnera americana is mostly found along the edges of wet depressions, in limestone glades, prairies, moist sandy soils, and open woods. (wikipedia.org)
- Buchnera americana has no known medicinal uses. (wikipedia.org)
- Buchnera americana L. (usf.edu)
Bacteriocytes2
- Among these proteins were some originating from the proteobacterium Buchnera aphidicola , which lives endosymbiotically within bacteriocytes in the hemocoel of the aphid. (pnas.org)
- In C. brasiliensis , the YLS resides both intra- and ex-tra-cel-lu-lar-ly but not in specialized cells - as do the Buchnera in the bacteriocytes (Fig. 2) - and is transmitted maternally. (asmblog.org)
Baizongia1
- We have sequenced the genome of the intracellular symbiont Buchnera aphidicola from the aphid Baizongia pistacea. (csic.es)
Lineages3
- Phylogenetic analyses of these plasmid-encoded functions have thus far suggested the absence of horizontal plasmid exchange among lineages of Buchnera. (mediu.edu.my)
- In Buchnera, the transport function has been shaped by the distinct selective constraints occurring in the Aphididae lineages. (uv.es)
- As a result of an ancestral infection and vertical transmission along the host lineages, Buchnera shows a pattern of cospeciation with the aphid hosts. (asm.org)
Aphidicola str1
- Buchnera aphidicola str. (uniprot.org)
Enterobacteriaceae1
- In contrast, several members of the Enterobacteriaceae , especially Enterobacter and Erwinia , and other potential plant or human pathogenic genera such as Acinetobacter and insect-associated Buchnera and Wolbachia spp. (frontiersin.org)
Species2
- Buchnera aphidicola is the primary obligate intracellular symbiont of most aphid species. (archives-ouvertes.fr)
- Here, we describe three new Buchnera plasmids, obtained from species of the aphid host families Lachnidae and Pemphigidae. (mediu.edu.my)
Proteins4
- Buchnera from B. pistaciae seem to possess a unique double membrane system and has, accordingly, lost all of its outer-membrane integral proteins. (uv.es)
- They discovered these proteins were of both aphid and Buchnera origins. (redorbit.com)
- One of these Buchnera proteins, GroEL, was found to induce immune responses in plants. (redorbit.com)
- In Buchnera , the apparently non-random reduction of the modular structure of the networks and the retention of essential characteristics of the interaction network indicate that the roles of proteins within the interaction network are important in the reductive process. (biomedcentral.com)
Plasmid1
- We infer from these incongruencies a case of horizontal plasmid transfer in Buchnera. (mediu.edu.my)
Strain1
- The results of this study describe the genetic and evolutionary relationships of the Buchnera A. glycines strain, and begin to define the roles of an aphid symbiont in host-plant resistance. (jgenomics.com)
GroEL1
- Interaction of Buchnera GroEL from Pentalonia nigronervosa with Banana bunchy top virus ( Nanoviridae ). (apsnet.org)
Reductive1
- Taking advantage of the two recently published high-throughput protein interaction maps of E. coli [ 9 , 15 ], we have performed a study in which we focused on the reductive evolution of the Buchnera genome. (biomedcentral.com)
BASIONYM1
- BASIONYM: Buchnera orobanchoides R. Brown ex Endlicher 1832. (usf.edu)
Nonessential amino acids1
- In turn, the aphid provides Buchnera with nutrients, including nonessential amino acids and carbohydrates that are abundant in their phloem-based diet or produced by the host. (jgenomics.com)
Aphid hosts2
- One of the best-studied cases of genome reduction is that of the intracellular bacterial symbiont Buchnera aphidicola , which shows a long evolutionary history of strict maternal transmission in its aphid hosts (Insecta: Homoptera: Aphidoidea) ( 18 ). (asm.org)
- This recurring Buchnera mutation governs thermal tolerance of aphid hosts. (pubmedcentralcanada.ca)
Biosynthetic1
- Genomic evidence suggests that several amino acid biosynthetic pathways are shared between aphid and Buchnera , providing the aphid the ability to regulate the endosymbiont's metabolism ( 16 ). (jgenomics.com)
Protein2
- The comparison between the E. coli and Buchnera interaction networks was based on the assumed low rate of protein interaction turnover [ 16 ] and the weak probability that new interactions would be generated in the restricted conditions in which Buchnera lives. (biomedcentral.com)
- The aphid-encoded bacterial gene RlpA is specifically expressed in the maternal bacteriocyte, and the protein product is localized in Buchnera . (asmblog.org)
Genome size2
- Despite an important reduction in its genome size and an apparent decay of its capacity for regulating transcription, this work reveals a significant correlation between mRNA abundances and chromosomal organization of the aphid-symbiont Buchnera . (biomedcentral.com)
- We have studied the reduction in genome size of Buchnera compared to its close relative Escherichia coli . (biomedcentral.com)
Bacteriocyte cells1
- Buchnera cells are densely packed in specialized aphid bacteriocyte cells. (nih.gov)
Ribosomal1
- The second is based on a different and unique organization of the ribosomal RNA operons of Buchnera and the close proximity of aroE upstream of rrl (gene coding for 23S rRNA). (scienceopen.com)
Amino acid1
- For instance, both essential amino acid synthesis in the aphid symbiont Buchnera and the reproductive parasitic phenotype of male-killing Spiroplasma in Drosophila melanogaster are encoded on plasmids ( 6 - 7 ). (asm.org)