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Regulation Of Apical Basal Patterning During Arabidopsis Thaliana Embryo Development
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Book Synopsis Regulation of Apical-basal Patterning During Arabidopsis Thaliana Embryo Development by : Zachery Robin Smith
Download or read book Regulation of Apical-basal Patterning During Arabidopsis Thaliana Embryo Development written by Zachery Robin Smith and published by . This book was released on 2010 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation of the apical-basal axis during Arabidopsis thaliana embryogenesis is a crucial step that directs the overall body plan of the seedling and directs the establishment of stem cell populations at either end of the embryo that give rise to all of the adult structures. The establishment of the apical-basal axis occurs with the first division of the zygote and remains plastic until the transition stage, where apical-basal polarity becomes fixed. The molecular mechanisms and genes responsible for the formation and fixation of the apical-basal axis remain largely unknown. This dissertation describes the advances made toward the elucidation of two major pathways that contribute to the formation and fixation of the apical-basal axis. Transcriptional repression plays a major role in developmental processes in general and this dissertation describes the role of the TOPLESS (TPL) gene in repression of the basal embryonic gene program in the developing apical domain of the embryo. We provide a framework for the function of TPL in transcriptional repression through chromatin remodeling. Furthermore, we show that the PLETHORA (PLT) family of transcription factors are direct targets for TPL mediated repression and necessary for the shoot to root transformation seen in the tpl-1 mutant. Secondly, using the tpl-1 mutant as a tool for forward genetics, the HD-ZIP Class III transcription factor family members are identified as determinants of apical fate in the globular stage embryo. Additionally, the HD-ZIP III genes are shown to have a mutually antagonistic relationship with the PLT gene family. Lastly, we show that the HD-ZIP III genes are true apical determinants and able to cause a homeotic conversion of the basal pole to a second apical pole.
Download or read book Polarity in Plants written by K. Lindsey and published by John Wiley & Sons. This book was released on 2004 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The establishment of polarity is a fundamental feature in eukaryotic development. Polarity in Plants provides an account of current research into the mechanisms by which polarity is generated at the level of the cell, organ and organism in plants, drawing especially on recent work with model organisms. The emphasis is on the use of the techniques of molecular genetics to dissect molecular mechanisms. This is the first volume to bring together the diverse aspects of polarity in plant development.
Book Synopsis Regulation of Apical Embryo Development in Arabidopsis Thaliana by : Enno Rikirsch
Download or read book Regulation of Apical Embryo Development in Arabidopsis Thaliana written by Enno Rikirsch and published by . This book was released on 2007 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cellular and Molecular Biology of Plant Seed Development by : Brian A. Larkins
Download or read book Cellular and Molecular Biology of Plant Seed Development written by Brian A. Larkins and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: The beginnings of human civili zation can be traced back to the time , ne- ly 12 ,000 years ago , when th e early humans gradually ch anged from a life of hunting and gathering food , to producing food. This beginning of pri- tive agriculture ensured a dependable supply of food , and fostered the living together of people in groups and the development of s o c i e ty. During th is time, plant s e e ds were recognized a s a valuable s o ur c e of food and nutrition , and began to be used for growing plants for food. Ever s i n c e , plant seeds have played an important role in the development of the human civilization . Even today, s e e ds of a few crop s p e c i e s , s uc h as the cereals and legume s, are the primary s o u r c e of most human food , and the predominant commodity in international agriculture. Owing to their great importance as food for human s and in international trade , seeds have been a favorite object of s t u d y by developmental biologists and physiologi sts , nutritionist s and chem i sts . A wealth of useful information i s available on th e biology of seed s .
Book Synopsis Cytoskeleton by : Jose C. Jimenez-Lopez
Download or read book Cytoskeleton written by Jose C. Jimenez-Lopez and published by BoD – Books on Demand. This book was released on 2017-05-17 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cytoskeleton is a highly dynamic intracellular platform constituted by a three-dimensional network of proteins responsible for key cellular roles as structure and shape, cell growth and development, and offering to the cell with "motility" that being the ability of the entire cell to move and for material to be moved within the cell in a regulated fashion (vesicle trafficking). The present edition of Cytoskeleton provides new insights into the structure-functional features, dynamics, and cytoskeleton's relationship to diseases. The authors' contribution in this book will be of substantial importance to a wide audience such as clinicians, researches, educators, and students interested in getting updated knowledge about molecular basis of cytoskeleton, such as regulation of cell vital processes by actin-binding proteins as cell morphogenesis, motility, their implications in cell signaling, as well as strategies for clinical trial and alternative therapies based in multitargeting molecules to tackle diseases, that is, cancer.
Book Synopsis Insights Into the Regulation of Apical Fate in Arabidopsis Thaliana Embryogenesis by : Michael John Hannon
Download or read book Insights Into the Regulation of Apical Fate in Arabidopsis Thaliana Embryogenesis written by Michael John Hannon and published by . This book was released on 2008 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of the shoot and root meristems occurs during embryogenesis. The establishment and maintenance of these key tissue types is regulated both by the phytohormone auxin and the putative transcriptional co-repressor TOPLESS (TPL) and its family members. Here we show physical interaction between TPL and the auxin response repressor an AUX/IAA, IAA12 and present genetic evidence that supports TPL's role as a transcriptional co-repressor. In addition we show that both TPL and IAA12 can function as repressors in an in planta repressor assay. Finally, using the tpl-1 allele which shows temperature sensitive, dominant negative activity for TPL and its family members, we identify and provide the initial characterization of a new player in the maintenance of the shoot apical meristem. This gene, POLAR BARE (PBR), encodes a putative serine carboxypeptidase that is expressed in the protoderm and the upper layers (L1 and L2) of the developing shoot apical meristem during embryogenesis. We pspeculate that this protein may be involved in small peptide signaling that regulates apical fate, which could lead to new insights about apical polarity.
Download or read book Molecular Biology of the Cell written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Auxin Signaling in Apical-basal Pattern Formation of the Arabidopsis Embryo by : Sasha Anna Singh
Download or read book Auxin Signaling in Apical-basal Pattern Formation of the Arabidopsis Embryo written by Sasha Anna Singh and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigates the role of auxin in the development of apical-basal patterning of the 'Arabidopsis' embryo. Two specific aspects of auxin signaling have been looked at in detail: auxin transport and auxin perception. In order to address the role of auxin transport during embryogenesis, a method was developed to allow for the growth and maintenance of ' Arabidopsis' embryos 'in vitro'. Embryos were then subjected to the auxin transport inhibitor, NPA, and the consequences on embryo apical-basal patterning were assessed. Specific genes that encode transcription regulators of auxin-induced gene activity were also looked at. Mutations in the transcription factors, 'MP, NPH4' and the nuclear co-regulator, ' SHY2', result in altered auxin responsiveness of an individual. Single mutations in 'MP' cause defects in embryo axis and vascular strand formation. The phenotypes of 'mp;nph4' and ' mp;shy2' double mutants indicate overlapping and antagonistic gene function, respectively. As first steps towards further insight into the role of 'MP' in angiosperms, a 'MP:GUS' translational fusion construct was introduced into 'Arabidopsis' and partial sequences of 'MP' homologues from related plant species were determined. In addition, an auxin-inducible 'GUS' reporter construct was also introduced into 'Nicotiana tobaccum' with the intent to assess auxin distribution and activity in another plant species.
Download or read book Embryos written by Jonathan Bard and published by CRC Press. This book was released on 1994 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this highly illustrated atlas, a group of internationally known authors review the development and significance of Arabidopsis, Dictyostelium discoideum, sea urchin, nematode worm, mollusc, leech, Drosophila, fish, toad, chick, mouse and human.
Book Synopsis The Origin of a Land Flora by : Frederick Orpen Bower
Download or read book The Origin of a Land Flora written by Frederick Orpen Bower and published by . This book was released on 1908 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Encyclopedia of Seeds by : J. Derek Bewley
Download or read book The Encyclopedia of Seeds written by J. Derek Bewley and published by CABI. This book was released on 2006 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first scholarly reference work to cover all the major scientific themes and facets of the subject of seeds. It outlines the latest fundamental biological knowledge about seeds, together with the principles of agricultural seed processing, storage and sowing, the food and industrial uses of seeds, and the roles of seeds in history, economies and cultures. With contributions from 110 expert authors worldwide, the editors have created 560 authoritative articles, illustrated with plentiful tables, figures, black-and-white and color photographs, suggested further reading matter and 670 supplementary definitions. The contents are alphabetically arranged and cross-referenced to connect related entries.
Download or read book Developmental Timing written by and published by Academic Press. This book was released on 2013-09-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new volume of Current Topics in Developmental Biology covers developmental timing, with contributions from an international board of authors. The chapters provide a comprehensive set of reviews covering such topics as the timing of developmental programs in Drosophila, temporal patterning of neural progenitors, and environmental modulation of developmental timing.
Book Synopsis International Climate Protection by : Michael Palocz-Andresen
Download or read book International Climate Protection written by Michael Palocz-Andresen and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the current climate protection processes and technologies, and informs the readers of the limiting factors and opportunities for future development. It represents the highest level of knowledge from leading scientists all over the world. Original high quality figures maximize understanding of the text. The book also introduces a new concept (climotographic), which provides a well pronounced solution to climate protection that is easily understandable for all levels of readers.
Book Synopsis Plant Embryogenesis by : María F. Suárez
Download or read book Plant Embryogenesis written by María F. Suárez and published by Springer Science & Business Media. This book was released on 2008 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Step-by-step reproducible laboratory procedures written by the top experts in the field offering their time-tested hints, tricks, and tips. Presents detailed outlines of embryonic systems models along with cutting-edge cellular, genetic, and molecular mechanism. Provides the most comprehensive collection of protocols on plan embryo development.
Book Synopsis The Shoot Apical Meristem by : R. F. Lyndon
Download or read book The Shoot Apical Meristem written by R. F. Lyndon and published by . This book was released on 1998 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: The shoot apex, although tiny and enclosed in the apical bud, forms the whole of the shoot system of plants and has a key role in producing leaves and flowers. An appreciation of how it functions is essential to an understanding of plant growth. In this book, the questions of the manner and the speed at which the shoot apex grows, and the likely cellular processes that are involved in the formation of leaves and flowers, are examined at the biochemical, physiological, biophysical, molecular, and genetic levels. This book is the only one currently available that is wholly devoted to the growth and physiology of the shoot apex and its key role in the formation of leaves and flowers.
Download or read book Plant Hormones written by P.J. Davies and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant hormones play a crucial role in controlling the way in which plants growand develop. Whilemetabolism providesthepowerand buildingblocks for plant life, it is the hormones that regulate the speed of growth of the individual parts and integrate these parts to produce the form that we recognize as a plant. In addition, theyplayacontrolling role inthe processes of reproduction. This book is a description ofthese natural chemicals: how they are synthesizedand metabolized; howthey work; whatwe knowoftheir molecular biology; how we measure them; and a description ofsome ofthe roles they play in regulating plant growth and development. Emphasis has also been placed on the new findings on plant hormones deriving from the expanding use ofmolecular biology as a tool to understand these fascinating regulatory molecules. Even at the present time, when the role of genes in regulating all aspects of growth and development is considered of prime importance, it is still clear that the path of development is nonetheless very much under hormonal control, either via changes in hormone levels in response to changes in gene transcription, or with the hormones themselves as regulators ofgene transcription. This is not a conference proceedings, but a selected collection ofnewly written, integrated, illustrated reviews describing our knowledge of plant hormones, and the experimental work that is the foundation of this knowledge.
Book Synopsis Embryology of Angiosperms by : B. M. Johri
Download or read book Embryology of Angiosperms written by B. M. Johri and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thirty-four years have elapsed since the publication of the late Professor P. Maheshwari's text, An Introduction to the Embryology of Angiosperms, a work which for many years served as an invaluable guide for students and a rich source book for research workerso Various texts dealing with sections of the braad spectrum oftopics encompassed by Maheshwari in his book have appeared in the interim, but a compendious modem work dealing with the whole field has been lacking. This present volume splendidly meets the need, and it is altogether fitting that Professor B. M. lohri, long an associate and close colleague of Professor Maheshwari and himself a prolific contributor to the subject, should have undertaken the task of editing it. When Maheshwari wrote, it was stiIl feasible for one author to handIe the subject, but today even someone with his fine bread th of vision and depth of understanding could not, alone, do it justice. So the effort has to be a collaborative one; and Professor lohri's achievement has been to bring together a team of authoritative collaborators, assign them their responsibilities, and put them to work to produce a text as integrated in its treatment as the diversity of the subject would allow. The product vividly illustrates the advances that have been made in the study of angiosperm reproductive systems in the last 30 years, and the book is surely destined to become the new standard for student and researcher alike.
