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Senescence Signalling And Control In Plants

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Senescence Signalling and Control in Plants

Senescence Signalling and Control in Plants Book
Author : Maryam Sarwat,Narendra Tuteja
Publisher : Academic Press
Release : 2018-11-29
ISBN : 0128131888
Language : En, Es, Fr & De

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Book Description :

Senescence Signalling and Control in Plants discusses the studies showing the importance of hormone action on developmental senescence. It shows the involvement of various signaling components (such as EIN2, LOX2) and transcription factors (such as oresara1 or ORE1) in controlling hormonal activity during senescence. Further, the involvement of various micro RNAs (miR164, miR319) in regulating leaf senescence are discussed. Through this book, the authors throw light on all the reverse and forward genetic approaches to reveal the role of various other phytohormones regulating plant senescence and the molecular mechanisms involved. Chapters on relevant topics are contributed by experts working in the area, making this a comprehensive treatise designed to provide an in-depth analysis on the subject matter. Throws light on the involvement of hormones (other than the well- known hormones cytokine and ethylene) in plant senescence Shows the underlying mechanisms on the hormonal actions during senescence Exhibits the involvement of microRNAs during this important plant developmental process

Handbook of Plant and Crop Physiology

Handbook of Plant and Crop Physiology Book
Author : Mohammad Pessarakli
Publisher : CRC Press
Release : 2021-07-13
ISBN : 1000373045
Language : En, Es, Fr & De

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Book Description :

Continuous discoveries in plant and crop physiology have resulted in an abundance of new information since the publication of the third edition of the Handbook of Plant and Crop Physiology. Following its predecessors, the fourth edition of this well-regarded handbook offers a unique, comprehensive, and complete collection of topics in the field of plant and crop physiology. Divided into eleven sections, for easy access of information, this edition contains more than 90 percent new material, substantial revisions, and two new sections. The handbook covers the physiology of plant and crop growth and development, cellular and molecular aspects, plant genetics and production processes. The book presents findings on plant and crop growth in response to climatic changes, and considers the potential for plants and crops adaptation, exploring the biotechnological aspects of plant and crop improvement. This content is used to plan, implement, and evaluate strategies for increasing plant growth and crop yield. Readers benefit from numerous tables, figures, case studies and illustrations, as well as thousands of index words, all of which increase the accessibility of the information contained in this important handbook. New to the Edition: Contains 37 new chapters and 13 extensively revised and expanded chapters from the third edition of this book. Includes new or modified sections on soil-plant-water-nutrients-microorganisms physiological relations; and on plant growth regulators, both promoters and inhibitors. Additional new and modified chapters cover the physiological responses of lower plants and vascular plants and crops to metal-based nanoparticles and agrichemicals; and the growth responses of plants and crops to climate change and environmental stresses. With contributions from 95 scientists from 20 countries, this book provides a comprehensive resource for research and for university courses, covering plant and crop physiological responses under normal and stressful conditions ranging from cellular aspects to whole plants.

Meta topolin A Growth Regulator for Plant Biotechnology and Agriculture

Meta topolin  A Growth Regulator for Plant Biotechnology and Agriculture Book
Author : Naseem Ahmad,Miroslav Strnad
Publisher : Springer Nature
Release : 2021-05-02
ISBN : 981159046X
Language : En, Es, Fr & De

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Book Description :

Plant tissue culture (PTC) technology has gained unassailable success for its various commercial and research applications in plant sciences. Plant growth regulators (PGRs) are an essential part of any plant tissue culture intervention for propagation or modification of plants. A wide range of PGRs are available, including aromatic compounds that show cytokinin activities, promote cell division and micro-propagation, viz. kinetin, N6-benzyladenine and topolins. Topolins are naturally occurring aromatic compounds that have gained popularity as an effective alternative for other frequently used cytokinins in in vitro culture of plants. Among them, meta-topolin [6-(3-hydroxybenzlyamino) purine] is the most popular and its use in plant tissue culture has amplified swiftly. During the last few decades, there have been numerous reports highlighting the effectiveness of meta-topolin in micropropagation and alleviation of various physiological disorders, rooting and acclimatization of tissue culture raised plants.

Polyamines in Plant Biotechnology Food Nutrition and Human Health

Polyamines in Plant Biotechnology  Food Nutrition and Human Health Book
Author : Rubén Alcázar,Ana Margarida Fortes,Antonio F. Tiburcio
Publisher : Frontiers Media SA
Release : 2020-03-24
ISBN : 2889636089
Language : En, Es, Fr & De

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Book Description :

Download Polyamines in Plant Biotechnology Food Nutrition and Human Health book written by Rubén Alcázar,Ana Margarida Fortes,Antonio F. Tiburcio, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Plant Responses to the Dark Scenario

Plant Responses to the Dark Scenario Book
Author : Péter Poór,Attila Ördög,M. Iqbal R. Khan,Chentao Lin
Publisher : Frontiers Media SA
Release : 2021-07-27
ISBN : 2889710815
Language : En, Es, Fr & De

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Book Description :

Download Plant Responses to the Dark Scenario book written by Péter Poór,Attila Ördög,M. Iqbal R. Khan,Chentao Lin, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Processes and Control of Plant Senescence

Processes and Control of Plant Senescence Book
Author : Y.Y. Leshem,A.H. Halevy,C. Frenkel
Publisher : Elsevier
Release : 2012-12-02
ISBN : 0444598464
Language : En, Es, Fr & De

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Book Description :

This monograph provides basic and empiric information underlying processes believed to be involved in the doubtless multifunctional plant senescence syndrome. While essentially assuming a `basic science' approach the authors, drawing on data obtained from many of the main laboratories and research centres involved in senescence research the world over, and also on findings of the research groups they are associated with, have described how principles of basic science have been applied to practical problems, and have outlined the partial means presently available to man for achieving plant senescence control. Moreover, information is provided on current problems in the forefront of senescence research. This approach will hopefully engender further enquiry and lead at least to partial solutions to some of the as yet unsolved problems. The book will be an asset to the book shelves of students on advanced courses in agriculture, biology and biochemistry as well as scientists and research workers, university and agricultural research station libraries and horticulturalists.

Plant Polyamines

Plant Polyamines Book
Author : Taku Takahashi
Publisher : MDPI
Release : 2020-06-17
ISBN : 3039363182
Language : En, Es, Fr & De

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Book Description :

Polyamines are small organic compounds found in all living organisms. In recent years, there have been many exciting advances in our understanding of plant polyamines, such as the determination of the biosynthetic and catabolic pathways of plant polyamines and the identification of the roles that plant polyamines play in cellular processes. This Special Issue contains six original research papers and three review articles, providing valuable insights and information for future polyamine-related research.

Sensory Biology of Plants

Sensory Biology of Plants Book
Author : Sudhir Sopory
Publisher : Springer Nature
Release : 2019-11-09
ISBN : 9811389225
Language : En, Es, Fr & De

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Book Description :

Plants provide a source of survival for all life on this planet. They are able to capture solar energy and convert it into food, feed, wood and medicines. Though sessile in nature, over many millions of years, plants have diversified and evolved from lower to higher life forms, spreading from sea level to mountains, and adapting to different ecozones. They have learnt to cope with challenging environmental conditions and various abiotic and biotic factors. Plants have also developed systems for monitoring the changing environment and efficiently utilizing resources for growth, flowering and reproduction, as well as mechanisms to counter the impact of pests and diseases and to communicate with other biological systems, like microbes and insects. This book discusses the “awareness” of plants and their ability to gather information through the perception of environmental cues, such as light, gravity, water, nutrients, touch and sound, and stresses. It also explores plants’ biochemical and molecular “computing” of the information to adjust their physiology and development to the advantage of the species. Further, it examines how plants communicate between their different organs and with other organisms, as well as the concepts of plant cognition, experience and memory, from both scientific and philosophical perspectives. Lastly, it addresses the phenomenon of death in plants. The epilogue presents an artist’s view of the beauty of the natural world, especially plant “architecture”. The book provides historical perspectives, comparisons with animal systems where needed, and general biochemical and molecular concepts and themes. Each chapter is selfcontained, but also includes cross talk with other chapters to offer an integrated view of plant life and allow readers to appreciate and admire the functioning of plant life from within and without. The book is a tribute by the Editor to his students, colleagues and co-workers and to those in whose labs he has worked.

Compatible Solutes Engineering for Crop Plants Facing Climate Change

Compatible Solutes Engineering for Crop Plants Facing Climate Change Book
Author : Shabir Hussain Wani,Manu Pratap Gangola,Bharathi Raja Ramadoss
Publisher : Springer Nature
Release : 2021-11-19
ISBN : 303080674X
Language : En, Es, Fr & De

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Book Description :

Plants, being sessile and autotrophic in nature, must cope with challenging environmental aberrations and therefore have evolved various responsive or defensive mechanisms including stress sensing mechanisms, antioxidant system, signaling pathways, secondary metabolites biosynthesis, and other defensive pathways among which accumulation of osmolytes or osmo-protectants is an important phenomenon. Osmolytes with organic chemical nature termed as compatible solutes are highly soluble compounds with no net charge at physiological pH and nontoxic at higher concentrations to plant cells. Compatible solutes in plants involve compounds like proline, glycine betaine, polyamines, trehalose, raffinose family oligosaccharides, fructans, gamma aminobutyric acid (GABA), and sugar alcohols playing structural, physiological, biochemical, and signaling roles during normal plant growth and development. The current and sustaining problems of climate change and increasing world population has challenged global food security. To feed more than 9 billion, the estimated population by 2050, the yield of major crops needs to be increased 1.1–1.3% per year, which is mainly restricted by the yield ceiling. A major factor limiting the crop yield is the changing global environmental conditions which includes drought, salinity and extreme temperatures and are responsible for a reduction of crop yield in almost all the crop plants. This condition may worsen with a decrease in agricultural land or the loss of potential crop yields by 70%. Therefore, it is a challenging task for agricultural scientists to develop tolerant/resistant varieties against abiotic stresses. The development of stress tolerant plant varieties through conventional breeding is very slow due to complex multigene traits. Engineering compatible solutes biosynthesis by deciphering the mechanism behind the abiotic tolerance or accumulation in plants cell is a potential emerging strategy to mitigate adverse effects of abiotic stresses and increase global crop production. However, detailed information on compatible solutes, including their sensing/signaling, biosynthesis, regulatory components, underlying biochemical mechanisms, crosstalk with other signaling pathways, and transgenic development have not been compiled into a single resource. Our book intends to fill this unmet need, with insight from recent advances in compatible solutes research on agriculturally important crop plants.

The First Cell

The First Cell Book
Author : Azra Raza
Publisher : Hachette UK
Release : 2019-10-15
ISBN : 1541699505
Language : En, Es, Fr & De

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Book Description :

With the fascinating scholarship of The Emperor of All Maladies and the deeply personal experience of When Breath Becomes Air, a world-class oncologist examines the current state of cancer and its devastating impact on the individuals it affects -- including herself. In The First Cell, Azra Raza offers a searing account of how both medicine and our society (mis)treats cancer, how we can do better, and why we must. A lyrical journey from hope to despair and back again, The First Cell explores cancer from every angle: medical, scientific, cultural, and personal. Indeed, Raza describes how she bore the terrible burden of being her own husband's oncologist as he succumbed to leukemia. Like When Breath Becomes Air, The First Cell is no ordinary book of medicine, but a book of wisdom and grace by an author who has devoted her life to making the unbearable easier to bear.

Transcriptional Regulation of Plant Senescence

Transcriptional Regulation of Plant Senescence Book
Author : Yongfeng Guo
Publisher : Unknown
Release : 2006
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

As the final phase of plant development, senescence is a unique process characterized by active degeneration of cellular structures and macromolecules, and remobilization of nutrients. During plant senescence, the majority of the genes expressed in green tissues are downregulated while senescence-associated genes (SAGS) are upregulated. In order to identify potential SAGS and unravel the biochemical pathways and regulatory mechanisms that underlie plant senescence, the transcriptome associated with leaf senescence was examined via analysis of expressed sequence tags (ESTs). An Arabidopsis thaliana leaf senescence cDNA library was subjected to large scale single-pass sequencing. Approximately 6,200 ESTs representing 2,491 unique genes were obtained. These included genes whose products are components of signal transduction pathways, genes involved in protein turnover, and genes encode transporters of ions, amino acids and sugars. In this leaf senescence dbEST, 134 transcription factors were represented, including members of gene families NAC, WRKY, AP2/EREBP, C21-12 zinc finger proteins and MYB. These transcription factors may play regulatory roles in leaf senescence by controlling differential gene expression. Functions of two of the transcription factor genes, AtNAP and AtMYB2 that are upregulated during senescence, were investigated. The NAC family gene AtNAP is a key regulator of leaf senescence whose function is conserved in different plant species. T-DNA insertion lines of AtNAP showed a significant delay of leaf senescence while inducible overexpression of this gene caused precocious senescence. Sequence homologs of AtNAP in kidney bean and rice also showed senescence-associated expression pattern and were able to restore the Arabidopsis mutant atnap to wild type. The transcription factor AtMYB2 plays an important role in whole plant senescence by controlling shoot regeneration. Arabidopsis T-DNA insertion lines of AtMYB2 exhibited a phenotype of significantly delayed senescence at the whole plant level, remarkably increased number of shoots, and reduced fertility. The AtMYB2 knock-out plants showed overaccumulation of cytokinins and enhanced expression of cytokinin-specific marker genes, and transformation of the atmyb2 plants with a cytokinin oxidase gene rescued the mutant, suggesting that the cytokinin pathway is involved in AtMYB2-mediated plant senescence. A model was proposed involving the regulation of whole plant senescence by AtMYB2 through cytokinin production control.

Elucidation of Abiotic Stress Signaling in Plants

Elucidation of Abiotic Stress Signaling in Plants Book
Author : Girdhar K. Pandey
Publisher : Springer
Release : 2015-05-30
ISBN : 1493925407
Language : En, Es, Fr & De

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Book Description :

Abiotic stresses such as high temperature, low-temperature, drought, and salinity limit crop productivity worldwide. Understanding plant responses to these stresses is essential for rational engineering of crop plants. In Arabidopsis, the signal transduction pathways for abiotic stresses, light, several phytohormones and pathogenesis have been elucidated. A significant portion of plant genomes (most studies are Arabidopsis and rice genome) encodes for proteins involves in signaling such as receptor, sensors, kinases, phosphatases, transcription factors and transporters/channels. Despite decades of physiological and molecular effort, knowledge pertaining to how plants sense and transduce low and high temperature, low-water availability (drought), water-submergence and salinity signals is still a major question before plant biologists. One major constraint hampering our understanding of these signal transduction processes in plants has been the lack or slow pace of application of molecular genomic and genetics knowledge in the form of gene function. In the post-genomic era, one of the major challenges is investigation and understanding of multiple genes and gene families regulating a particular physiological and developmental aspect of plant life cycle. One of the important physiological processes is regulation of stress response, which leads to adaptation or adjustment in response to adverse stimuli. With the holistic understanding of the signaling pathways involving not only one gene family but multiple genes or gene families, plant biologists can lay a foundation for designing and generating future crops that can withstand the higher degree of environmental stresses (especially abiotic stresses, which are the major cause of crop loss throughout the world) without losing crop yield and productivity. Therefore, in this proposed book, we intend to incorporate the contribution from leading plant biologists to elucidate several aspects of stress signaling by functional genomic approaches.

Senescence and Aging in Plants

Senescence and Aging in Plants Book
Author : L.D. Nooden
Publisher : Elsevier
Release : 2012-12-02
ISBN : 0323145957
Language : En, Es, Fr & De

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Book Description :

Senescence and Aging in Plants reviews the state of knowledge in the processes involved in plant senescence and aging. The book begins by discussing the emergence of senescence as a concept; experimental analysis of senescence; and patterns of senescence. It then examines membrane deterioration during senescence; photosynthesis in relation to leaf senescence; senescence of detached plant organs; changing patterns of nucleic acid and protein synthesis during senescence; and degradative and associated assimilatory aspects of nitrogen removal. This is followed by chapters on aspects of ethylene that may impinge upon its role in promoting senescence of higher plants; the role of cytokinins in plant senescence; the promoters and retardants of senescence; and the role of calcium in plant senescence. The concept of whole plant senescence is discussed, which can be subdivided into patterns, correlative controls, cessation of vegetative growth, declining assimilatory processes, assimilate partitioning, and hormonal controls. The final chapters cover the deterioration of cellular membranes during the plant aging process and seed aging.

Plant Growth Substances 1988

Plant Growth Substances 1988 Book
Author : Richard P. Pharis,Stewart B. Rood
Publisher : Springer Science & Business Media
Release : 2012-12-06
ISBN : 3642745458
Language : En, Es, Fr & De

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Book Description :

The 13th International Conference on Plant Growth Substances was held from the 17th to the 26th July, 1988 in Calgary, Alberta Canada under the auspices of the IPGSA (International Plant Growth Substances Association) and the University of Calgary. Over 550 participants from allover the world attended, along with 70 Associates and 25 University of Calgary graduate students who assisted in audiovisual presentations when not attending the scientific sessions. Fine weather prevailed, as was usual for summer on the eastern slopes of the Canadian Rockies, and participants arriving early visited the famous Calgary Stampede. A hosted buffet opened the Conference on Sunday evening. On Wednesday evening, following an afternoon field trip into the mountains of the Kananaskis Valley, the IPGSA traditional banquet became a western barbecue on Richards' Ghost River Ranch in the foothills of the Rockies, with folk and country and western music provided by the Great Western Orchestra. The fine Alberta weather continued through the weekend, and the Conference ended with a field trip to Sun shine Meadows, a World Heritage Site in Banff National Park.

Regulatory Mechanisms of Leaf Senescence Under Environmental Stresses

Regulatory Mechanisms of Leaf Senescence Under Environmental Stresses Book
Author : Yasuhito Sakuraba,Stefan Hortensteiner,Nam-Chon Paek,Jinjie Li,Soyon Park
Publisher : Frontiers Media SA
Release : 2020-10-13
ISBN : 2889660761
Language : En, Es, Fr & De

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Book Description :

Download Regulatory Mechanisms of Leaf Senescence Under Environmental Stresses book written by Yasuhito Sakuraba,Stefan Hortensteiner,Nam-Chon Paek,Jinjie Li,Soyon Park, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Hormonal Control of Important Agronomic Traits

Hormonal Control of Important Agronomic Traits Book
Author : Chi-Kuang Wen,Yunde Zhao,Yong-Ling Ruan
Publisher : Frontiers Media SA
Release : 2018-12-21
ISBN : 2889456862
Language : En, Es, Fr & De

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Book Description :

One of the goals of plant science is to improve agricultural sustainability, increasing yield, food diversity, and nutrition, while minimizing the negative impact on our environment. In response to internal and external cues, plant hormones control various aspects of plant growth and development. The wealth of our knowledge on plant hormones shall greatly advance sustainable agriculture.

Molecular Approaches to Delay Senescence and Abscission in Flowers

Molecular Approaches to Delay Senescence and Abscission in Flowers Book
Author : Genevieve Noel Stier
Publisher : Unknown
Release : 2011
ISBN : 9781267239747
Language : En, Es, Fr & De

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Book Description :

Senescence and abscission of floral organs are ordered processes that are the final events in floral development. These processes are initiated by developmental and environmental cues in a very controlled manner. This study tests the hypothesis that interruption of critical processes such as ethylene perception, protein synthesis and protein degradation during senescence or abscission could result in an extension in floral longevity. For many flowers, ethylene is the primary factor in the initiation of senescence. To prevent this signal from being perceived, petunia was transformed with a construct expressing the mutant ethylene receptor gene etr1-1 under the control of the dexamethasone inducible system (GVG system). The mutation in the ethylene receptor ETR1 results in the receptor being unable to bind ethylene, thereby conferring ethylene insensitivity in any tissues where the mutant receptor is expressed. When treated with the inducer, transformed plants became less ethylene sensitive, as demonstrated by a reduced response to exogenously applied ethylene as well as a one day extension in vase life of flowers. Use of the inducible system eliminated the undesirable effects seen in previous research in which etr1-1 was constitutively expressed. It is known that synthesis of new proteins occurs at the onset of senescence and that these new proteins are essential to the senescence program. Petunias were transformed with a construct containing a fragment of a gene (RPL2) encoding a ribosomal protein in the antisense orientation under the control of senescence-associated promoters (SAG12 or MjXB3) or under the control of the dexamethasone inducible system (GVG system). Flowers from plants transformed with the SAG12:antisense RPL2 and MjXB3:antisense RPL2 constructs did not show any delay in senescence, probably because the silencing of RPL2 occurred too late to prevent the synthesis of proteins involved in the initiation of senescence. Flowers from some plants harboring the inducible construct (GVG::antisense RPL2) showed an average delay in senescence of more than 5 days when exposed to the inducer. Tomato plants were transformed with a construct designed to silence RPL2 under the control of a modified abscission-specific TAPG1 promoter. Only 6% of pedicels had abscised from TAPG1:antisense RPL2 inflorescences 16 hours after flower removal compared to 61% for the control. Previous research suggests that targeted protein degradation via the 26S proteasome is important for senescence. Petunias were transformed with a construct containing a fragment of a gene encoding a proteasome component, proteasome beta subunit type 2 (PBB), under the control of the GVG system. Senescence in flowers from transgenic plants treated with the inducer was delayed by an average of more than 4 days and in some cases flowers treated with the inducer did not appear to senesce at all.

Plant Physiology

Plant Physiology Book
Author : Lincoln Taiz,Eduardo Zeiger
Publisher : Sinauer Associates Incorporated
Release : 2006
ISBN : 9780878938568
Language : En, Es, Fr & De

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Book Description :

This fourth edition provides the basics for introductory courses on plant physiology without sacrificing the more challenging material sought by upper division and graduate level students. Many new or revised figures and photographs, study questions and a glossary of key terms have been added.

Indian Review of Life Sciences

Indian Review of Life Sciences Book
Author : Anonim
Publisher : Unknown
Release : 1987
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Indian Review of Life Sciences book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Ethylene Action in Plants

Ethylene Action in Plants Book
Author : Nafees A. Khan
Publisher : Springer Science & Business Media
Release : 2007-05-10
ISBN : 3540328467
Language : En, Es, Fr & De

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Book Description :

The plant hormone ethylene plays a prominent role among several intrinsic and extrinsic factors that control growth and physiology of plants. Its biological activity was discovered over a century ago. However, extensive studies on its mode of action came later. This book brings into focus the recent developments on the biochemical, physiological, and molecular basis for ethylene action in plants.