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Exploring Natural Variation In Arabidopsis Thaliana
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Book Synopsis Exploring Natural Variation in Arabidopsis Thaliana by : Johanne Lempe
Download or read book Exploring Natural Variation in Arabidopsis Thaliana written by Johanne Lempe and published by . This book was released on 2007 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecological Genomics by : Christian R. Landry
Download or read book Ecological Genomics written by Christian R. Landry and published by Springer Science & Business Media. This book was released on 2013-11-25 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers in the field of ecological genomics aim to determine how a genome or a population of genomes interacts with its environment across ecological and evolutionary timescales. Ecological genomics is trans-disciplinary by nature. Ecologists have turned to genomics to be able to elucidate the mechanistic bases of the biodiversity their research tries to understand. Genomicists have turned to ecology in order to better explain the functional cellular and molecular variation they observed in their model organisms. We provide an advanced-level book that covers this recent research and proposes future development for this field. A synthesis of the field of ecological genomics emerges from this volume. Ecological Genomics covers a wide array of organisms (microbes, plants and animals) in order to be able to identify central concepts that motivate and derive from recent investigations in different branches of the tree of life. Ecological Genomics covers 3 fields of research that have most benefited from the recent technological and conceptual developments in the field of ecological genomics: the study of life-history evolution and its impact of genome architectures; the study of the genomic bases of phenotypic plasticity and the study of the genomic bases of adaptation and speciation.
Book Synopsis Exploring Natural Variation in Flowering Time in Arabidopsis Thaliana by : Jonathan David Werner
Download or read book Exploring Natural Variation in Flowering Time in Arabidopsis Thaliana written by Jonathan David Werner and published by . This book was released on 2004 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Basis of Natural Variation in Photoprotection in Arabidopsis by : Tepsuda Rungrat
Download or read book Genetic Basis of Natural Variation in Photoprotection in Arabidopsis written by Tepsuda Rungrat and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light is a necessary factor for most living organism on Earth; however it can also become one of the most important abiotic environmental stresses limiting plant growth. As natural environments are extremely variable, plant has developed several mechanisms to cope with excess light energy such as adjusting leaf angle, chloroplast position, thermal dissipation, and detoxification of the reactive oxygen species resulting from stress. Among those mechanisms, thermal dissipation or Non-Photochemical Quenching (NPQ) seem to be the most rapid photoprotective response in higher plants. To investigate the natural variation of NPQ, different sets of Arabidopsis thaliana (Arabidopsis) including a genetically balanced set of natural accessions, Recombinant Inbred Intercross (RIXs), and photoprotective mutants were studied using simulated natural environments. In natural habitats, natural genetic variation is selected on to result in adaptive allelic variation. The Genome-Wide Association Study (GWAS) has been successful in identifying natural allelic variants underlying natural variation in many traits and in different plant species such as Arabidopsis, rice and maize. In order to expand the current knowledge of the genetic basis of NPQ, which may also be affected by environment, two main approaches were taken in this thesis. Firstly, the natural variation in NPQ under simulated natural environments was explored. Secondly, two mapping approaches, RIXs and GWAS, were applied to reveal candidate genes/loci underlying variation in the NPQ trait. This study investigated the physiological and molecular changes that occur in response to diurnal and seasonal growth conditions which plant experiences in the field. Two dynamic natural environments were simulated: coastal-autumn; which had moderate temperatures and light intensities, and inland-autumn; where plants were exposed to greater temperature variations and higher light intensities. Inland plants presented evidence of rapid NPQ in response to sudden higher light exposure, a decline of steady state NPQ and a decrease in chlorophyll content, indicating long-term acclimation. In contrast, coastal plants had a slower induction of NPQ followed by a slow increase in NPQ over time. This provides a better understanding on how plants have different NPQ kinetics responses under different environments; furthermore the responses are varied between accessions. The findings presented in this thesis demonstrated that natural genetic variation in NPQ phenotype is influenced not only by genetic factor but also environmental effects. TheGWAS and RIX results for the NPQ trait revealed a total of 27 QTL, of which RIX-QTL5-3, QTL5-2, and QTL5-3 overlapped between the two different mapping approaches. One of the most significant findings from this study is the identification of QTL1-4, which was found predominantly in the coastal condition. This QTL was directly over the PSII protein subunit PsbS gene, of which the loss of function mutant, non-photochemical quenching 4 (npq4), has been shown to lack Energy-dependent quenching (qE). The identification of this a priori gene is significant as although it a known NPQ gene it has not been identified in previous NPQ mapping studies. This suggests that the novel use of climate chambers and GWAS in this study allowed the genetic basis of variation in NPQ specific to certain environments and certain plant developmental stages to be identified. Taken together, the findings presented here have provided meaningful insight into the naturally occurring genetic variation in Arabidopsis accessions during stressful condition, providing the opportunity to identify more genes that are involved in the regulation of photoprotection in response to the natural environment.
Book Synopsis Genetic and Enironmental Effects on Natural Variation in Arabidopsis Thaliana Seed Size by : Sebastian Christopher Gnan
Download or read book Genetic and Enironmental Effects on Natural Variation in Arabidopsis Thaliana Seed Size written by Sebastian Christopher Gnan and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Discovery of a Novel Amino Acid Racemase Through Exploration of Natural Variation in Arabidopsis Thaliana by :
Download or read book Discovery of a Novel Amino Acid Racemase Through Exploration of Natural Variation in Arabidopsis Thaliana written by and published by . This book was released on 2015 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plants produce diverse low-molecular-weight compounds via specialized metabolism. Discovery of the pathways underlying production of these metabolites is an important challenge for harnessing the huge chemical diversity and catalytic potential in the plant kingdom for human uses, but this effort is often encumbered by the necessity to initially identify compounds of interest or purify a catalyst involved in their synthesis. Here, as an alternative approach, we have performed untargeted metabolite profiling and genome-wide association analysis on 440 natural accessions of Arabidopsis thaliana. This approach allowed us to establish genetic linkages between metabolites and genes. Investigation of one of the metabolite-gene associations led to the identification of N-malonyl-D-allo-isoleucine, and the discovery of a novel amino acid racemase involved in its biosynthesis. This finding provides, to our knowledge, the first functional characterization of a eukaryotic member of a large and widely conserved phenazine biosynthesis protein PhzF-like protein family. Unlike most of known eukaryotic amino acid racemases, the newly discovered enzyme does not require pyridoxal 5'-phosphate for its activity. In conclusion, this study thus identifies a new d-amino acid racemase gene family and advances our knowledge of plant d-amino acid metabolism that is currently largely unexplored. As a result, it also demonstrates that exploitation of natural metabolic variation by integrating metabolomics with genome-wide association is a powerful approach for functional genomics study of specialized metabolism.
Book Synopsis Genetic and Environmental Effects on Natural Variation in Arabidopsis Thaliana Seed Size by : Sebastian Christopher Gnan
Download or read book Genetic and Environmental Effects on Natural Variation in Arabidopsis Thaliana Seed Size written by Sebastian Christopher Gnan and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Natural Variation for Disease Resistance in Arabidopsis Thaliana Using Accessions and RILS. by : Adnane Nemri
Download or read book Study of Natural Variation for Disease Resistance in Arabidopsis Thaliana Using Accessions and RILS. written by Adnane Nemri and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :James R. Ehleringer Publisher :Springer Science & Business Media ISBN 13 :9780387220697 Total Pages :560 pages Book Rating :4.2/5 (26 download)
Book Synopsis A History of Atmospheric CO2 and Its Effects on Plants, Animals, and Ecosystems by : James R. Ehleringer
Download or read book A History of Atmospheric CO2 and Its Effects on Plants, Animals, and Ecosystems written by James R. Ehleringer and published by Springer Science & Business Media. This book was released on 2005-01-27 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trees, CO2 concentration, climate change, herbivores, temperature.
Book Synopsis Natural Variation in Arabidopsis Thaliana Growth in Response to Ambient Temperatures by : Asif Khattak
Download or read book Natural Variation in Arabidopsis Thaliana Growth in Response to Ambient Temperatures written by Asif Khattak and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Natural Variation in the Vernalization Response of Arabidopsis Thaliana by : Amy Strange
Download or read book Natural Variation in the Vernalization Response of Arabidopsis Thaliana written by Amy Strange and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Natural Variation in Arabidopsis Thaliana Root Growth Behavior by : Laura M. Vaughn
Download or read book Natural Variation in Arabidopsis Thaliana Root Growth Behavior written by Laura M. Vaughn and published by . This book was released on 2010 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Identification and Characterization of Genes Underlying Natural Variation in Flowering Time in Arabidopsis Thaliana by : Lei Zhang
Download or read book Identification and Characterization of Genes Underlying Natural Variation in Flowering Time in Arabidopsis Thaliana written by Lei Zhang and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Natural Variation for Growth in Arabidopsis Thaliana by : Daniela-Loredana Vlad
Download or read book Natural Variation for Growth in Arabidopsis Thaliana written by Daniela-Loredana Vlad and published by . This book was released on 2009 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Not only do plants represent an essential food source, but they are also an important source of renewable materials and molecules. In this context, plant growth, and consequently yield, is an important parameter of tomorrow's agriculture and society in many ways. Also fundamental to our understanding of evolution, plant growth is an extremely complex process under the influence of many factors from virtually any aspects of plant biology. The genetic analysis of natural variation allows the discovery of allelic variants at previously known genes or new genes affecting quantitative traits. We aimed at identifying genes underlying natural variation for shoot growth using a quantitative genetics approach (QTL mapping). The analysis of shoot growth variation from a Bur-0 x Col-0 Recombinant Inbred Line (RIL) set, led to the identification of two loci, SG1 (Shoot Growth-1) mapped at the top of chromosome 5 and SG3 (Shoot Growth-3) results from allelic variation in the genomic region underlying a QTL predicted between 14 and 15 Mb on chromosome 4. SG3 was not visible in the RIL population due to an epistatic interaction with another locus SG3i (SG3-interactor), and because it was very likely counter-selected. Fine-mapping and complementation revealed the gene responsible for the phenotype, a stromal oxidoreductase affecting photosynthetic electron transfer rate, which was duplicated in Bur-0 but not in Col-0. We show that natural variation at the SG3 locus is explained by the divergent evolution of a (dispersed) single gene duplication causing the transposition of the functional copy of the gene in Bur (compared to Col). The presence of the Col allele at SG1 has severe phenotypic consequences. The candidate region for SG1 has been reduced to ~ 8 kb containing only one gene of unknown function and no major sequence polymorphism. On the other hand, the two alleles at SG1 show important DNA-methylation contrast. Even though we tend to think that SG1 is the effect of an epiallele, so far the genetic mechanism is not understood. The analysis of these QTLs revealed new genes affecting plant growth, and allows us to draw an always more complex picture of the architecture of quantitative traits.
Book Synopsis Natural Variation for Loci Controlling Metabolism and Development in Arabidopsis Thaliana by : S. Gill
Download or read book Natural Variation for Loci Controlling Metabolism and Development in Arabidopsis Thaliana written by S. Gill and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Natural Variation in the Pseudo-response Regulator 9 Gene of Arabidopsis Thaliana by : Kathryn E. Hacker
Download or read book Analysis of Natural Variation in the Pseudo-response Regulator 9 Gene of Arabidopsis Thaliana written by Kathryn E. Hacker and published by . This book was released on 2007 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molecular Genetic Analysis of Natural Variation in Photoperiodic Flowering of Arabidopsis Thaliana by : Antonis Giakountis
Download or read book Molecular Genetic Analysis of Natural Variation in Photoperiodic Flowering of Arabidopsis Thaliana written by Antonis Giakountis and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: