Pseudomonas cichorii is a Gram-negative soil bacterium that is pathogenic to plants. It has a wide host range, and can have an important economical impact on lettuce, celery and chrysanthemum crops. P. cichorii was first isolated on endives (Cichorium endivia), from which it derives its name. It produces 6-aminopenicillanic acid. Based on 16S rRNA analysis, P. cichorii has been placed in the P. syringae group. Pseudomonas cichorii is non-host specific as it does not infect just one host. Its host range includes lettuce, pepper, celery, coffee, wheat, basil and several other host plants. Symptoms of the causal agent vary depending on the host and the area of the plant infected. In general, pseudomonas cichorii is seen to cause leaf blighting and spotting. The first appearance of symptoms involves a water soaked lesion that develops at the edge of the leaf, midvein or randomly across the leaf These lesions progressively turn black or brown and may be surrounded by yellow halos. These lesions also ...
Thirty-three fluorescent Pseudomonas strains isolated from tomato pith necrosis (FPTPN strains) and 89 Pseudomonas corrugata strains were studied by numerical taxonomy. In the dendrogram of distances, the P. corrugata strains constituted a single phenon (phenon 1), whereas 17 of the 33 FPTPN strains clustered in a separate phenon (phenon 2). The other 16 FPTPN strains were included in phena consisting of well-characterized fluorescent Pseudomonas species or were isolated phenotypes. Phena 1 and 2 were distinguished by fluorescence on King B medium, accumulation of poly-β;-hydroxybutyrate, production of levan, and assimilation of sorbitol. DNA-DNA hybridization showed that P. corrugata is a true genomic species (66 to 100% DNA relatedness) and that the FPTPN strains of phenon 2 were divided into three genomic groups. Genomic groups 1 and 2 were not distinct from each other phenotypcally, and genomic group 3 could be distinguished from genomic groups 1 and 2 only on the basis of assimilation of
TY - JOUR. T1 - The LuxR regulators PcoR and RfiA co-regulate antimicrobial peptide and alginate production in Pseudomonas corrugata. AU - Bella, Patrizia. AU - Licciardello, Grazia. AU - Trantas, Emmanouil A.. AU - Sarris, Panagiotis F.. AU - Strano, Cinzia P.. AU - Catara, Vittoria. AU - Caruso, Andrea. AU - Caruso, Andrea. AU - Anzalone, Alice. AU - Gheleri, Rodolpho. AU - Caruso, Andrea. AU - Almeida, Nalvo F.. PY - 2018. Y1 - 2018. N2 - Cyclic lipopeptides (CLPs) are considered as some of the most important secondary metabolites in different plant-associated bacteria, thanks to their antimicrobial, cytotoxic, and surfactant properties. In this study, our aim was to investigate the role of the Quorum Sensing (QS) system, PcoI/PcoR, and the LuxR-type transcriptional regulator RfiA in CLP production in the phytopatogenic bacterium, Pseudomonas corrugata based on our previous work where we reported that the pcoR and rfiA mutants were devoid of the CLPs cormycin and corpeptin production. Due to ...
Pseudomonas viridiflava is a pectinolytic bacterium member of the Pseudomonas syringae group (1). It is pathogenic to numerous cultivated crops and weeds (2), including Arabidopsis thaliana, in which it induces both compatible (disease) and incompatible (resistance) responses (3). For this reason, it has triggered much interest in plant-microbe interaction studies in A. thaliana (4, 5).. Pathogenicity genes and mechanisms are becoming increasingly well-known, and 2 paralogous pathogenicity islands (T-PAI and S-PAI), which share many gene homologs, have been described for P. viridiflava (6, 7).. P. viridiflava was shown to display a high level of genetic variation worldwide, with all isolated P. viridiflava strains parting into two distinct and deeply diverged clades, with evidence of frequent recombination but little geographic differentiation (4, 5). These 2 distinct clades cause disease symptoms of differing severities.. This bacterium is an antimycotic producer that is usable in biological ...
The effect of plasmid CAM-OCT on responses to UV irradiation was compared in Pseudomonas aeruginosa, in Pseudomonas putida, and in Pseudomonas putida mutants carrying mutations in UV response genes. CAM-OCT substantially increased both survival and mutagenesis in the two species. P. aeruginosa strains without CAM-OCT exhibited much higher UV sensitivity than did P. putida strains. UV-induced mutagenesis of plasmid-free P. putida was easily detected in three different assays (two reversion assays and one forward mutation assay), whereas UV mutagenesis of P. aeruginosa without CAM-OCT was seen only in the forward mutation assay. These results suggest major differences in DNA repair between the two species and highlight the presence of error-prone repair functions on CAM-OCT. A number of P. putida mutants carrying chromosomal mutations affecting either survival or mutagenesis after UV irradiation were isolated, and the effect of CAM-OCT on these mutants was determined. All mutations producing a ...
The chromosomal DNA was isolated and purified from 17 strains of Pseudomonas paucimobilis, and from the type or reference strains of Flavobacterium capsulatum, F. devorans, F. multivorum, Chromobacterium lividum, Xanthomonas campestris and seven species of Pseudomonas. The DNA base compositions (mol%G + C) of P. paucimobilis strains were between 62·2 and 68·6%, and typical strains had a mean value of 65·3 ± 0·4 mol %, determined from thermal denaturation temperature. DNA-DNA molecular hybridization with 3H-labelled probe DNA from NCTC 11030 P. paucimobilis (the type strain) indicated that the species comprised a core of 13 closely related strains (74 to 96%), which included F. devorans NCIB 8195 (= ATCC 10829). Four P. paucimobilis strains displayed lower levels of hybridization (≤ 38%). The hybridization results showed that P. paucimobilis was not closely related to allied yellow-pigmented bacteria or to other reference pseudomonads. The electrophoretic protein patterns of representative
Pseudomonas amygdali is a Gram-negative plant pathogenic bacterium. It is named after its ability to cause disease on almond (Prunus amygdalus) trees. Different analyses, including 16S rRNA analysis, DNA-DNA hybridization, and MLST clearly placed P. amygdali in the P. syringae group together with the species Pseudomonas ficuserectae and Pseudomonas meliae, and 27 pathovars of Pseudomonas syringae/Pseudomonas savastanoi, constituting a single, well-defined phylogenetic group which should be considered as a single species. This phylogenetic group has not been formally named because of the lack of reliable means to differentiate it phenotipically from closely related species, and it is currently known as either genomospecies 2 or phylogroup 3. When it is formally named, the correct name for this new species should be Pseudomonas amygdali, which takes precedence over all the other names of taxa from this group, including Pseudomonas savastanoi, which is and inadequate and confusing name whose use is ...
Université de Liège - ULg , Département des sciences biomédicales et précliniques , Microbiologie médicale et virologie médicale ,] ...
If you have used this database, please ensure that you acknowledge this most recent Pseudomonas Genome Database publication rather than just the website URL. Thank you!. Winsor GL, Griffiths EJ, Lo R, Dhillon BK, Shay JA, Brinkman FS (2016 ...
Mono- and Stereopictres of 5.0 Angstrom coordination sphere of Cobalt atom in PDB 1h41: Pseudomonas Cellulosa E292A Alpha-D-Glucuronidase Mutant Complexed With Aldotriuronic Acid
The broad and vague phenotypic definition allowed the genus Pseudomonas to become a dumping ground for incompletely characterized polarly flagellated, gram-negative, rod-shaped, aerobic bacteria, and a large number of species have been accommodated in the genus Pseudomonas. The 16S rRNA sequences of 128 valid and invalid Pseudomonas species, which included almost valid species of the genus Pseudomonas listed in the Approved Lists of Bacterial Names, were obtained: sequences of 59 species were determined and those of 69 species were obtained from the GenBank/EMBL/DDBJ databases. These sequences were compared with the sequences of other species of the Proteobacteria. Fifty-seven valid or invalid species including Pseudomonas aeruginosa (type species of the genus Pseudomonas Migula 1894) belonged to the genus Pseudomonas (sensu stricto). Seven subclusters were formed in the cluster of the genus Pseudomonas (sensu stricto), and the resulting clusters conformed well to the rRNA-DNA hybridization study by
One way of identifying and categorizing multiple bacterial organisms in a sample is to use ribotyping.[42] In ribotyping, differing lengths of chromosomal DNA are isolated from samples containing bacterial species, and digested into fragments.[42] Similar types of fragments from differing organisms are visualized and their lengths compared to each other by Southern blotting or by the much faster method of polymerase chain reaction (PCR).[42] Fragments can then be matched with sequences found on bacterial species.[42] Ribotyping is shown to be a method to isolate bacteria capable of spoilage.[43] Around 51% of Pseudomonas bacteria found in dairy processing plants are P. fluorescens, with 69% of these isolates possessing proteases, lipases, and lecithinases which contribute to degradation of milk components and subsequent spoilage.[43] Other Pseudomonas species can possess any one of the proteases, lipases, or lecithinases, or none at all.[43] Similar enzymatic activity is performed by Pseudomonas ...
One way of identifying and categorizing multiple bacterial organisms in a sample is to use ribotyping.[37] In ribotyping, differing lengths of chromosomal DNA are isolated from samples containing bacterial species, and digested into fragments.[37] Similar types of fragments from differing organisms are visualized and their lengths compared to each other by Southern blotting or by the much faster method of polymerase chain reaction (PCR).[37] Fragments can then be matched with sequences found on bacterial species.[37] Ribotyping is shown to be a method to isolate bacteria capable of spoilage.[38] Around 51% of Pseudomonas bacteria found in dairy processing plants are P. fluorescens, with 69% of these isolates possessing proteases, lipases, and lecithinases which contribute to degradation of milk components and subsequent spoilage.[38] Other Pseudomonas species can possess any one of the proteases, lipases, or lecithinases, or none at all.[38] Similar enzymatic activity is performed by Pseudomonas ...
TY - JOUR. T1 - Infections caused by Pseudomonas species in patients with burns and in other surgical patients. AU - Pruitt, Basil A.. PY - 1974/11. Y1 - 1974/11. N2 - Infections caused by Pseudomonas species are a particular threat to all patients with extensive burns, as well as to other critically ill surgical patients. These gramnegative opportunistic bacteria proliferate rapidly in and invade through nonviable tissue such as the burn wound. Topical chemotherapy with Sulfamylonburn creams has significantly reduced the occurrence of pseudomonas burn wound sepsis, but wound surveillance and biopsy monitoring are essential to the assessment of the bacterial density of the burn and to the timely alteration of therapy. Pseudomonas infections of the lung may be either hematogenous or airborne in origin, and the clinical course and treatment vary accordingly. Pseudomonas suppurative thrombophlebitis may also occur in patients with impaired antimicrobial defenses and may serve as a source of ...
Define pseudomonas. pseudomonas synonyms, pseudomonas pronunciation, pseudomonas translation, English dictionary definition of pseudomonas. n. pl. pseu·do·mon·a·des Any of various gram-negative, rod-shaped, mostly aerobic flagellated bacteria of the genus Pseudomonas, commonly found in soil,...
TY - JOUR. T1 - Lipodepsipeptides from Pseudomonas syringae are partially proteolyzed and are not absorbed by humans. T2 - an in vitro study. AU - Fiore, A.. AU - Laparra, J. M.. AU - Farre, R.. AU - Fullone, M. R.. AU - Grgurina, I.. AU - Gallo, M.. AU - Fogliano, V.. PY - 2008/5. Y1 - 2008/5. N2 - There are some concerns about the use of Pseudomonas-based products as biocontrol agents because of the hemolytic activity shown by their metabolites. The effects of Pseudomonas lipodepsipeptides (LDPs) on mammals via ingestion and the LDP degradation during the digestion and intestinal permeability have not been evaluated. In this research, the susceptibility of different LDPs to degradation was assayed with enzymatic gastrointestinal digestion, and intestinal permeability to LDPs was investigated in an in vitro system based on an intestinal cell layer system. Results demonstrated that trypsin and chymotrypsin hydrolyze up to 50% of the various LDPs, and that proteolysis was further increased by ...
Other names: ATCC 8062, CCUG 2087, CFBP 5589, CIP 59.11, IFO 13583, JCM 11598, LMG 2229, NBRC 13583, NCIMB 6576, NCTC 10692, NRRL B-778, P. oleovorans, Pseudomonas oleovorans, Pseudomonas sp. MGY01 ...
Other names: ATCC 8062, CCUG 2087, CFBP 5589, CIP 59.11, IFO 13583, JCM 11598, LMG 2229, NBRC 13583, NCIMB 6576, NCTC 10692, NRRL B-778, P. oleovorans, Pseudomonas oleovorans, Pseudomonas sp. MGY01 ...
Pseudomonas aeruginosa bacteria, computer illustration. P. aeruginosa is a gram-negative bacterium which causes multiple antibiotic resistant nosocomial (hospital-acquired) infections of different location, including pneumonia, osteomyelitis, peritonitis and wound infections. - Stock Image F012/9762
General Information: This strain was isolated from agricultural loam (sand, clay, and organic matter) soil in 1988 by Compeau et al. and is well adapted to soil environments. Bacteria belonging to the Pseudomonas group are common inhabitants of soil and water and can also be found on the surfaces of plants and animals. Pseudomonas bacteria are found in nature in a biofilm or in planktonic form. Pseudomonas bacteria are renowned for their metabolic versatility as they can grow under a variety of growth conditions and do not need any organic growth factors. This organism is a nonpathogenic saprophyte which inhabits soil, water and plant surface environments. If iron is in low supply, it produces a soluble, greenish fluorescent pigment, which is how it was named. As these environmentally versatile bacteria possess the ability to degrade (at least partially) multiple different pollutants, they are studied in their use as bioremediants. ...
General Information: This strain was isolated from agricultural loam (sand, clay, and organic matter) soil in 1988 by Compeau et al. and is well adapted to soil environments. Bacteria belonging to the Pseudomonas group are common inhabitants of soil and water and can also be found on the surfaces of plants and animals. Pseudomonas bacteria are found in nature in a biofilm or in planktonic form. Pseudomonas bacteria are renowned for their metabolic versatility as they can grow under a variety of growth conditions and do not need any organic growth factors. This organism is a nonpathogenic saprophyte which inhabits soil, water and plant surface environments. If iron is in low supply, it produces a soluble, greenish fluorescent pigment, which is how it was named. As these environmentally versatile bacteria possess the ability to degrade (at least partially) multiple different pollutants, they are studied in their use as bioremediants. ...
In this study, the efficient phosphate utilizing isolates were used to remove phosphate from synthetic phosphate wastewater was tested using batch scale process. Hence the objective of the present study was to examine the efficiency of bacterial species individually for the removal of phosphate from synthetic phosphate wastewater. The most efficient phosphate reducers were isolated and screened from eutrophic lake water samples. The total heterotrophic bacterial analysis of the samples showed the presence of about 22 phosphate reducers. Among them, Pseudomonas sp YLW-7 were found to be efficient in phosphate reduction based on the maximum phosphate ultization which was observed by plate screening method using the minimum inhibitory concentration (MIC) test. The effect of carbon sources (glucose, starch, sucrose and lactose) at 0.5% on the removal of phosphate by Pseudomonas sp YLW7 was estimated. The maximum growth of Pseudomonas sp YLW7 was observed to be 0.9886 OD in glucose followed by starch ...
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