• genome
  • Using a biotechnology technique called CGM (Clean Genome Multiplication), Kaiima has found a way to create polyploidy in plants, without encroaching on their DNA. (israel21c.org)
  • Some carp and some ferns have more than 50 chromosomes in the haploid genome. (blogspot.com)
  • A distinctive feature of plant cell division is the plant cell has three genomes (the nuclear, mitochondrial , and plastid genome) to replicate and divide. (blogspot.com)
  • DNA synthesis occurs in the synthesis (S) phase, beginning at origins of replication distributed around the genome, occurring on average every 66 kb in dicotyledonous plants and on average every 47 kb in monocotyledonous plants. (blogspot.com)
  • He has pioneered the use of flow cytometry in plant science for the analysis of nuclear genome size and regularly holds international training courses on the subject. (wiley.com)
  • He has studied plant genomes for almost 30 years and is an expert on intraspecific variation of genome size. (wiley.com)
  • He is a taxonomist specializing in plant biosystematics, including genome size determination and has co-authored a book on taxonomy analysis. (wiley.com)
  • Using the model plant Arabidopsis , we investigate chromatin, gene expression, recombination, inheritance and natural variation in diploids, upon genome duplication in polyploids and after stress treatments. (oeaw.ac.at)
  • With a small genome of approximately 135 megabase pairs, Arabidopsis thaliana became the first plant to have its entire genetic makeup sequenced. (natureworldnews.com)
  • Chromosome Painting: Principles, Strategies and Scope, Chromosome Techniques: Theory and Practice, Chromosome Techniques - A Manual, Botanical Survey of India, Advances in Cell and Chromosome Research, Plant Genome: Biodiversity and Evolution (2 volumes), and Cytology of Different Species of Palms and Its Bearing on the Solution of the Problems of Phylogeny and Speciation are some of his notable works. (wikipedia.org)
  • Post his official retirement, he continued his association with CSIR as an emeritus scientist from 2001 to 2005 when he moved to the National Institute for Plant Genome Research, an autonomous institute under the Department of Biotechnology as an INSA Senior Scientist in 2006, holding the position till 2010. (wikipedia.org)
  • Prof Messing is also involved in the Plant Genome Initiative at Rutgers, which has contributed to the sequencing of the maize, sorghum, and the rice genome. (wikipedia.org)
  • centromere
  • Another example within the fly itself is the tandem duplication of various polytene bands located near the centromere of the X chromosome which results in the Barr phenotype of kidney-shaped eyes. (wikipedia.org)
  • genetics
  • Following a brief introduction that highlights general considerations when analyzing plant cells by flow cytometric methods, the book goes on to discuss examples of application in plant genetics, genomic analysis, cell cycle analysis, marine organism analysis and breeding studies. (wiley.com)
  • A former president of the Indian Society of Genetics and Plant Breeding (1994-97), he started the Journal of Medicinal and Aromatic Plant Sciences during his tenure as the president. (wikipedia.org)
  • He was associated with several other science journals such as Journal of Genetics, Indian Journal of Genetics and Plant Breeding, Indian Journal of Experimental Biology and Proceedings of Indian National Science Academy and mentored 32 doctoral scholars in their researches. (wikipedia.org)
  • At Rutgers, his plant genetics initiatives are directed towards the evolution of plant chromosomes and gene duplication. (wikipedia.org)
  • In 1924, he started on an Advanced genetics course of Emerson and started to use John Belling's iron-aceto-carmine smear technique to clarify chromosome numbers. (wikipedia.org)
  • nucleus
  • When it does, the plants with four chromosomes typically show advantages over those with just two sets in each nucleus. (israel21c.org)
  • In flowering plants (angiosperms), there is a unique double fertilization where by one sperm nucleus fuses with the egg nucleus to form the diploid (2n) zygote, and the other sperm nucleus fuses with two polar nuclei to form the triploid nutritive tissue, or endosperm, which will nourish the embryo in the seed. (blogspot.com)
  • The zygote then increases in cell number by mitosis, a type of cell division during which chromosomes in a nucleus are replicated and then separated to form two genetically identical daughter nuclei. (blogspot.com)
  • His early researches helped in the discovery of structural arrangement of chromosomes in the interphase nucleus and later, working on Escherichia coli and its bacteriophage Lambda, he described its transcription map. (wikipedia.org)
  • species
  • In order to modulate H3 phosphorylation, root meristems of different plant species were treated with the protein phosphatase inhibitor cantharidin or with ice-water. (springer.com)
  • He redefined angiosperm taxonomy, proposed new concepts of the dynamic DNA and dynamic structure and behaviour of chromosomes and suggested the use of embryo irradiation and in-vitro cultures for the generation of variability, and tissue culture as a tool for conservation of endangered species and for maintaining genetic variability. (wikipedia.org)
  • The lower altitude site is estimated to have about 50 mature plants, making it the most endangered Drosera species, since it is threatened with extinction in the wild. (wikipedia.org)
  • Very little is known about N. thorelii and it is unlikely to have entered cultivation, although various other taxa are often mislabelled as this species in the plant trade. (wikipedia.org)
  • In February 2010, Charles Clarke and François Mey travelled to the site where the photographs had been taken, as well as to the type location, but were unable to find any remaining plants of this species. (wikipedia.org)
  • genus
  • 3. A method according to Claim 2 wherein the sources of DNA in the target plant are from the same genus. (google.co.uk)
  • He carried out important research into plant chromosomes of iris, orchid genus and corn plants (such as Maize). (wikipedia.org)
  • Those which are most commonly found within this genus are hermaphroditism (monoecious plant with both staminate and pistillate), dioecy (male and female reproductive systems found in separate morphs), and gynodioecy (existence of female and hermaphroditic reproductive systems among the individuals of the population). (wikipedia.org)
  • Drosera regia, commonly known as the king sundew, is a carnivorous plant in the sundew genus Drosera that is endemic to a single valley in South Africa. (wikipedia.org)
  • Molecular
  • She has experience with classical cytogenetic techniques (chromosome aberrations, micronuclei) and molecular methods (comet analysis and gel electrophoresis in a constant electric field/CFGE). (omicsonline.org)
  • occurs
  • Since polyploidy occurs after endoreplication also in somatic cells of otherwise diploid plants, we are investigating the differences of gene expression in cells with increased DNA content and the factors that determine the degree of endoreplication. (oeaw.ac.at)
  • Asexual reproduction of mature plants usually occurs after flowering with new plants arising from the rhizome and roots. (wikipedia.org)
  • karyotype
  • The karyotype and the number of Chlorophytum comosum chromosome were studied. (cnki.com.cn)
  • The karyotype of Chlorophytum comosum chromosome belongs to'3B' type. (cnki.com.cn)
  • The objective of the study was to evaluate cytotoxic/clastogenic effect and anti-cytotoxic/anti-clastogenic potential of geraniol (ethanolic extract) evaluated by chromosome aberration test in barley (reconstructed karyotype MK14/2034) and cultured human lymphocytes. (omicsonline.org)
  • This number, along with the visual appearance of the chromosome, is known as the karyotype, and can be found by looking at the chromosomes through a microscope. (wikipedia.org)
  • nuclei
  • In cell division in plant cells, the two daughter nuclei are partitioned to form two separate cells by a cell plate that grows at the equator of the mother cell. (blogspot.com)
  • They wrote, 'Here, we present direct paleontological evidence for long-term genomic stasis in this family in the form of a calcified osmundaceous [royal fern] rhizome [tiny root structure] from the Lower Jurassic of Sweden with pristinely preserved cellular contents, including nuclei and chromosomes. (icr.org)
  • 2014. Fossilized Nuclei and Chromosomes Reveal 180 Million Years of Genomic Stasis in Royal Ferns. (icr.org)
  • Cytology
  • Considered by many as the father of Indian cytology, he headed the Centre for Advanced Study on Cell and Chromosome at the University and is known for his contributions to the studies on the physical and chemical nature of chromosomes. (wikipedia.org)
  • He then studied cytology with Lester in the Botany Department and minored in Plant Breeding with Emerson. (wikipedia.org)
  • He also was an instructor in botany, until 1923, when Prof. Emerson recommended Randolph to get a United States Department of Agriculture (USDA) appointment at Cornell to investigate corn chromosome cytology. (wikipedia.org)
  • Pollen
  • Studies have shown that the operculate pollen shed in tetrads (fused groups of four pollen grains), characteristics that are similar in the related Dionaea muscipula (the Venus flytrap) and Aldrovanda vesiculosa, is incompatible with clones, failing to produce seed when plants are self-fertilised. (wikipedia.org)
  • 2016
  • CS1 maint: Extra text: authors list (link) [page needed] Schubert V, Ruban A, Houben A (2016) Chromatin Ring Formation at Plant Centromeres. (wikipedia.org)
  • commonly
  • Rare in plants to begin with, experts had long thought that animals were more susceptible to often-fatal cancer conditions because they exclusively experience chromothripsis, commonly called "chromosome shattering. (natureworldnews.com)
  • researches
  • Sharma pioneered researches in cytogenetics and cytochemistry in India and is credited with developing new research techniques for the study of chromosome structure of plants. (wikipedia.org)
  • The researches of Sushil Kumar which focused on the fields of plant and microbial genetical genomics are reported to have assisted in a wider understanding of biotechnology and crop breeding. (wikipedia.org)
  • Silene
  • Several studies concentrated on Silene latifolia have shown a correlation between loci on the Y chromosome and the sex that is expressed phenotypically in the flower. (wikipedia.org)
  • The system for determining sex in Silene latifolia is close to that found in humans because in both cases the Y chromosome determines what reproductive mechanisms will be expressed in the offspring. (wikipedia.org)
  • Scientists
  • Scientists from the Department of Horticulture are using modern laser-based flow cytometry techniques for isolating plant protoplasts. (purdue.edu)
  • For some time now, plant breeders and scientists have been trying to encourage this doubling or "polyploidy" in certain plants with high economic value, using artificial methods including colchicine treatment, nitrous oxide treatment and temperature shock. (israel21c.org)
  • This wicked technique actually gave rise to modern agriculture thanks to the innovative mind of one of Cold Spring Harbor Laboratory's first scientists, a plant geneticist named George Shull. (cshl.edu)
  • typically
  • Next, the desired contents of the minichromosome must be transformed into a host which is capable of assembling the components (typically yeast or mammalian cells) into a functional chromosome. (wikipedia.org)
  • ferns
  • The researchers compared the fossil chromosomes to those of living royal ferns and found no differences. (icr.org)
  • distinct
  • During this same proposed timespan, some furry little mammal supposedly evolved all the way to people-a fantastic story involving wholesale reorganizations of dozens of fundamentally distinct body forms-while not one chromosome of the royal fern changed at all. (icr.org)
  • In 1932, he collaborated with Karl Heinrich Bauer with whom he discovered that the tangled chromosomes having distinct bands are unique to the cells of the salivary glands, midgut, Malphigian tubules, and brain of the flies Bibio hurtulunus and Drosophila funebris. (wikipedia.org)
  • degenerate
  • The Y chromosome, which is thought to carry the male determining gene, was isolated by UV laser microdissection and amplified by degenerate oligonucleotide-primed PCR. (oup.com)
  • 1999
  • Subsequently, he became head of the Botany Department at Reading University (1992 - 1996) before moving to Cambridge in 1996 as Director of the Botanic Garden, Curator of the University Herbarium (1999 - 2010) and Professor of Plant Cytogenetics. (wikipedia.org)
  • research
  • Explaining why the research was conducted on castor plants, Krolzig says that the castor plant, grown mainly in India and China, is widely utilized in the chemical, plastic and cosmetic industries and also as a lubricant that doesn't break down under high temperatures, for use in high-speed cars and airplanes. (israel21c.org)
  • These investigations, concerning the anti-cytotoxic and anti-genotoxic potential of geraniol could be useful in health research on the pharmacological capacity and activity of the present and other natural plant compounds. (omicsonline.org)
  • He is a former director of the Central Institute of Medicinal and Aromatic Plants of the Council of Scientific and Industrial Research and an elected fellow of the Indian National Science Academy, National Academy of Agricultural Sciences, National Academy of Sciences, India, and Indian Academy of Sciences. (wikipedia.org)
  • Moving to the Council of Scientific and Industrial Research (CSIR) as a senior grade scientist in 1989, he became the director of the Central Institute of Medicinal and Aromatic Plants in 1993, superannuating in that position in 2000. (wikipedia.org)
  • Compounds derived from plants identified as N. thorelii have been the subject of some research. (wikipedia.org)
  • evolutionary
  • The study authors wrote that this fossil comparison 'represents a notable example of evolutionary stasis among plants. (icr.org)
  • methods
  • However, these methods have caused damage to the plants' DNA and ultimately to the plants themselves. (israel21c.org)
  • He has constantly been developing novel techniques to study plant genomes, among them many methods based on flow cytometry. (wiley.com)
  • corn
  • Corn plants sow across upon themselves produced astounding mixtures of growth. (cshl.edu)