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Author : Asif Khattak
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)
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:
Author : Charlotte Trontin
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (867 download)
Download or read book Decoding the Complexity of Natural Variation for Shoot Growth and Response to the Environment in Arabidopsis Thaliana written by Charlotte Trontin and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genotypes adapted to contrasting environments are expected to behave differently when placed in common controlled conditions, if their sensitivity to environmental cues or intrinsic growth behaviour are set to different thresholds, or are limited at distinct levels. This allows natural variation to be exploited as an unlimited source of new alleles or genes for the study of the genetic basis of quantitative trait variation. My doctoral work focuses on analysing natural variation for shoot growth and response to the environment in A. thaliana. Natural variation analyses aim at understanding how molecular genetic or epigenetic diversity controls phenotypic variation at different scales and times of plant development and under different environmental conditions, and how selection or demographic processes influence the frequency of those molecular variants in populations for them to get adapted to their local environment. As such, the analysis of A. thaliana natural variation can be addressed using a variety of approaches, from genetics and molecular methods to ecology and evolutionary questions. During my PhD, I got the chance to tackle several of those aspects through my contributions to three independent projects which have in common to exploit A. thaliana natural variation. The first one is the analysis of the pattern of polymorphism from a set of 102 A. thaliana accessions at the MOT1 gene coding for a molybdate transporter (an essential micronutrient) and responsible for contrasted growth and fitness among accessions in response to Mo availability in the soil. I showed at different geographical scales that MOT1 pattern of polymorphisms is not consistent with neutral evolution and shows signs of diversifying selection. This work helped reinforce the hypothesis that in some populations, mutations in MOT1 have been selected to face soils rich in Mo and potentially deleterious despite their negative effect on Mo-limiting soils. The second project consists in the characterisation and functional analysis of two putative receptor-like kinases (RLKs) identified from their effect on shoot growth specifically under mannitol-supplemented media and not in response to other osmotic constraints. The function of such RLKs in A. thaliana, which is not known to synthesize mannitol was intriguing at first but, through different experiments, we built the hypothesis that those RLKs could be activated by the mannitol produced by some pathogens such as fungi and participate to plant defensive response. The third project, in collaboration with Michel Vincentz's team from CBMEG (Brasil) and Vincent Colot (IBENS, Paris), consists in the analysis of the occurrence of natural epigenetic variants of the QQS gene in different populations from Central Asia and their possible phenotypic and adaptive consequences. Overall, these analyses of the genetic and epigenetic molecular variation leading to the biomass phenotype(s) in interaction with the environment provide clues as to how and where in the pathways adaptation is shaping natural variation.
Author : James R. Ehleringer
Publisher : Springer Science & Business Media
ISBN 13 : 9780387220697
Total Pages : 560 pages
Book Rating : 4.2/5 (26 download)
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.
Author : David W. Pfennig
Publisher : CRC Press
ISBN 13 : 1000387585
Total Pages : 479 pages
Book Rating : 4.0/5 (3 download)
Download or read book Phenotypic Plasticity & Evolution written by David W. Pfennig and published by CRC Press. This book was released on 2021-05-31 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phenotypic plasticity – the ability of an individual organism to alter its features in direct response to a change in its environment – is ubiquitous. Understanding how and why this phenomenon exists is crucial because it unites all levels of biological inquiry. This book brings together researchers who approach plasticity from diverse perspectives to explore new ideas and recent findings about the causes and consequences of plasticity. Contributors also discuss such controversial topics as how plasticity shapes ecological and evolutionary processes; whether specific plastic responses can be passed to offspring; and whether plasticity has left an important imprint on the history of life. Importantly, each chapter highlights key questions for future research. Drawing on numerous studies of plasticity in natural populations of plants and animals, this book aims to foster greater appreciation for this important, but frequently misunderstood phenomenon. Key Features Written in an accessible style with numerous illustrations, including many in color Reviews the history of the study of plasticity, including Darwin’s views Most chapters conclude with recommendations for future research
Author : Daniela-Loredana Vlad
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (69 download)
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.
Author : Laura M. Vaughn
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (74 download)
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:
Author : Kent Bradford
Publisher : John Wiley & Sons
ISBN 13 : 1405173270
Total Pages : 392 pages
Book Rating : 4.4/5 (51 download)
Download or read book Annual Plant Reviews, Seed Development, Dormancy and Germination written by Kent Bradford and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation, dispersal and germination of seeds are crucial stages in the life cycles of gymnosperm and angiosperm plants. The unique properties of seeds, particularly their tolerance to desiccation, their mobility, and their ability to schedule their germination to coincide with times when environmental conditions are favorable to their survival as seedlings, have no doubt contributed significantly to the success of seed-bearing plants. Humans are also dependent upon seeds, which constitute the majority of the world’s staple foods (e.g., cereals and legumes). Seeds are an excellent system for studying fundamental developmental processes in plant biology, as they develop from a single fertilized zygote into an embryo and endosperm, in association with the surrounding maternal tissues. As genetic and molecular approaches have become increasingly powerful tools for biological research, seeds have become an attractive system in which to study a wide array of metabolic processes and regulatory systems. Seed Development, Dormancy and Germination provides a comprehensive overview of seed biology from the point of view of the developmental and regulatory processes that are involved in the transition from a developing seed through dormancy and into germination and seedling growth. It examines the complexity of the environmental, physiological, molecular and genetic interactions that occur through the life cycle of seeds, along with the concepts and approaches used to analyze seed dormancy and germination behavior. It also identifies the current challenges and remaining questions for future research. The book is directed at plant developmental biologists, geneticists, plant breeders, seed biologists and graduate students.
Author : J. Derek Bewley
Publisher : Springer Science & Business Media
ISBN 13 : 1461446937
Total Pages : 400 pages
Book Rating : 4.4/5 (614 download)
Download or read book Seeds written by J. Derek Bewley and published by Springer Science & Business Media. This book was released on 2012-10-23 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated and much revised third edition of Seeds: Physiology of Development, Germination and Dormancy provides a thorough overview of seed biology and incorporates much of the progress that has been made during the past fifteen years. With an emphasis on placing information in the context of the seed, this new edition includes recent advances in the areas of molecular biology of development and germination, as well as fresh insights into dormancy, ecophysiology, desiccation tolerance, and longevity. Authored by preeminent authorities in the field, this book is an invaluable resource for researchers, teachers, and students interested in the diverse aspects of seed biology.
Author : Bjorn Pieper
Publisher :
ISBN 13 : 9789085854685
Total Pages : 131 pages
Book Rating : 4.8/5 (546 download)
Download or read book The Genetic and Molecular Basis of Natural Variation for Plant Growth and Related Traits in Arabidopsis Thaliana written by Bjorn Pieper and published by . This book was released on 2009 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Amy Strange
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (11 download)
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:
Author : Kathryn E. Hacker
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.:/5 (252 download)
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:
Author : Christopher Paul Timothy Peters
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (858 download)
Download or read book Variation Within Arabidopsis Thaliana Ecotypic Responses to Environmental Change written by Christopher Paul Timothy Peters and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Global average atmospheric CO2 concentrations are predicted to double before the end of this century. This increase has been predicted to raise global average temperatures, which in turn will increase atmospheric humidity. How plants will respond to these changes is an area of intense study. The variation within ecotypic responses of Arabidopsis thaliana to these environmental variables (C02, temperature and humidity) is explored in this thesis using a combination of morphological and novel environmental metabolomics techniques. This study utilises ecotypes of Arabidopsis thaliana originating from a range of altitudes and geographical locations to elucidate altitude-mediated variation In response to changes In environmental conditions. Morphological investigation shows that stomatal conductance is regulated by an interchangeable mechanism of stomatal density and stomatal aperture over a range of CO2 treatments and that elevated temperature or humidity can disrupt this mechanism. Furthermore, these characteristics of stomatal responses of Arabidopsis thaliana are shown to be independent of ecotypic altitude of origin. Environmental metabolomic analysis demonstrated clear separation between ecotypic rnetabolite fingerprints as well as showing correlations between ecotype altitude of origin and specific plant primary and secondary metabolites; providing novel elucidation of biochemical pathways involved in responses to environmental perturbation.
Author : Alain Goossens
Publisher : Humana
ISBN 13 : 9781493960132
Total Pages : 0 pages
Book Rating : 4.9/5 (61 download)
Download or read book Jasmonate Signaling written by Alain Goossens and published by Humana. This book was released on 2016-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is now well established that jasmonates, originally identified as the major component of jasmine scent, play a universal role in the plant kingdom and are involved in the regulation of diverse aspects of plant biology, including growth, development, metabolism, and interaction with the environment. In Jasmonate Signaling: Methods and Protocols, experts in the field aim to unite powerful emerging omics platforms with a number of key reductionist approaches to form a comprehensive collection of tools and protocols. The detailed chapters in this book embrace physiological, environmental, molecular, omics, and bioinformatics approaches that allow dissecting jasmonate actions in the model species Arabidopsis thaliana or in other plants. Written in the highly successful Methods in Molecular Biology series format, chapters feature introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, along with tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Jasmonate Signaling: Methods and Protocols will empower interested researchers to dissect all steps of jasmonate signaling and the processes they modulate.
Author : Jonathan David Werner
Publisher :
ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.:/5 (318 download)
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:
Author : N. R. Baker
Publisher : CUP Archive
ISBN 13 : 9780521304801
Total Pages : 376 pages
Book Rating : 4.3/5 (48 download)
Download or read book Control of Leaf Growth written by N. R. Baker and published by CUP Archive. This book was released on 1985 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1985, this book covers the physiological and environmental factors that regulate leaf growth. It opens with a consideration of the importance to the plant of leaf size, form and development, and then divides naturally into two sections: the first covers the intrinsic factors within the leaf that influence development, including solute and hormonal status, cellular components, and energy transducing systems; the second considers the role of some major environmental variables in the regulation of leaf growth, including temperature, light, water and nutrients, atmospheric influences and the interactive effects of climatic variables.
Author : J P F D'Mello
Publisher : CABI
ISBN 13 : 1780642636
Total Pages : 634 pages
Book Rating : 4.7/5 (86 download)
Download or read book Amino Acids in Higher Plants written by J P F D'Mello and published by CABI. This book was released on 2015-04-15 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amino acids play a role in the defence mechanisms and stress responses of plants, as well as in food quality and safety for humans and animals. Recent advances in the field make a comprehensive overview of the information a necessity; this book collates chapters on plant enzymes and metabolism, modulation, molecular aspects and secondary products. Also including information on ecology, the environment and mammalian nutrition and toxicology, it provides an authoritative resource.
Author : Yunbi Xu
Publisher : CABI
ISBN 13 : 1845936248
Total Pages : 756 pages
Book Rating : 4.8/5 (459 download)
Download or read book Molecular Plant Breeding written by Yunbi Xu and published by CABI. This book was released on 2010 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in plant genomics and molecular biology have revolutionized our understanding of plant genetics, providing new opportunities for more efficient and controllable plant breeding. Successful techniques require a solid understanding of the underlying molecular biology as well as experience in applied plant breeding. Bridging the gap between developments in biotechnology and its applications in plant improvement, Molecular Plant Breeding provides an integrative overview of issues from basic theories to their applications to crop improvement including molecular marker technology, gene mapping, genetic transformation, quantitative genetics, and breeding methodology.
