• genome
  • 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)
  • genetics
  • A couple weeks back, in the very infrequent Fruit Genetics Friday series, I discussed sex chromosomes in fruit , specifically papaya. (blogspot.com)
  • 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)
  • 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)
  • Here we review the occurrence and role of repetitive DNA in Y chromosome evolution in various species with a focus on dioecious plants. (biomedsearch.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)
  • Löve also wrote papers about plant evolution from a more theoretical angle, e.g. the still cited The biological species concept and its evolutionary structure. (wikipedia.org)
  • Chromosome numbers of central and northwest European plant species. (wikipedia.org)
  • Vasconcellea goudotiana (also known as papayuelo) is a species of flowering plant in the Caricaceae family. (wikipedia.org)
  • nucleus
  • 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)
  • 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)
  • 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)
  • genus
  • 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)
  • 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)
  • 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)
  • 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)
  • ferns
  • The researchers compared the fossil chromosomes to those of living royal ferns and found no differences. (icr.org)
  • Scientists
  • Scientists from the Department of Horticulture are using modern laser-based flow cytometry techniques for isolating plant protoplasts. (purdue.edu)
  • 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)
  • Breeding
  • Han Tan explained in a recent release that now that it's understood how this disastrous process can be triggered, it could be applied in plant breeding as a way to create new genomes - similar to GMO design. (natureworldnews.com)
  • RS: The notion that plant breeding is somehow unnatural has been around for hundreds of years. (cshl.edu)
  • In 1945, where he served as director of Institute of Botany and Plant Breeding at the University of Iceland 1945-1951. (wikipedia.org)
  • evolutionary
  • The study authors wrote that this fossil comparison 'represents a notable example of evolutionary stasis among plants. (icr.org)
  • cell
  • The function of the phosphorylation of histone H3 at Ser 10 in plant cell division is uncertain. (springer.com)
  • Bradbury EM (1992) Reversible histone modifications and the chromosome cell cycle. (springer.com)
  • To maintain the genetic information of a cell, it is essential that chromosomes correctly replicate and divide as a cell divides. (blogspot.com)
  • This is followed by cytokinesis, the process of cytoplasmic division, which results in two daughter cells, each having the same number of chromosomes and genetic composition as the parent cell. (blogspot.com)
  • Sharma was the founder of the Centre for Advanced Study on Cell and Chromosome which was established during his tenancy as the head of the department of Botany at the University of Kolkata. (wikipedia.org)
  • reproductive
  • The flowering phenology and reproductive features of the endangered plant Disanthus cercidifolius var. (cnki.com.cn)
  • Silene are a flowering plant that evolved a dioecious reproductive system. (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)
  • 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
  • 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)
  • corn
  • Corn plants sow across upon themselves produced astounding mixtures of growth. (cshl.edu)