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Hormone Metabolism And Signaling In Plants

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Plant Hormones

Plant Hormones Book
Author : Jiayang Li,Steven M. Smith,Chuanyou Li
Publisher : Academic Press
Release : 2017-04-21
ISBN : 9780128115626
Language : En, Es, Fr & De

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Book Description :

Plant Hormones: Biosynthesis and Mechanisms of Action is based on research funded by the Chinese government's National Natural Science Foundation of China (NSFC). This book brings a fresh understanding of hormone biology, particularly molecular mechanisms driving plant hormone actions. With growing understanding of hormone biology comes new outlooks on how mankind values and utilizes the built-in potential of plants for improvement of crops in an environmentally friendly and sustainable manner. This book is a comprehensive description of all major plant hormones: how they are synthesized and catabolized; how they are perceived by plant cells; how they trigger signal transduction; how they regulate gene expression; how they regulate plant growth, development and defense responses; and how we measure plant hormones. This is an exciting time for researchers interested in plant hormones. Plants rely on a diverse set of small molecule hormones to regulate every aspect of their biological processes including development, growth, and adaptation. Since the discovery of the first plant hormone auxin, hormones have always been the frontiers of plant biology. Although the physiological functions of most plant hormones have been studied for decades, the last 15 to 20 years have seen a dramatic progress in our understanding of the molecular mechanisms of hormone actions. The publication of the whole genome sequences of the model systems of Arabidopsis and rice, together with the advent of multidisciplinary approaches has opened the door to successful experimentation on plant hormone actions. Offers a comprehensive description of all major plant hormones including the recently discovered strigolactones and several peptide hormones Contains a chapter describing how plant hormones regulate stem cells Offers a fresh understanding of hormone biology, particularly molecular mechanisms driving plant hormone actions Discusses the built-in potential of plants for improvement of crops in an environmentally friendly and sustainable manner

Phytohormones A Window to Metabolism Signaling and Biotechnological Applications

Phytohormones  A Window to Metabolism  Signaling and Biotechnological Applications Book
Author : Lam-Son Phan Tran,Sikander Pal
Publisher : Springer Science & Business Media
Release : 2014-04-01
ISBN : 1493904914
Language : En, Es, Fr & De

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Book Description :

Abiotic and biotic stresses adversely affect plant growth and productivity. The phytohormones regulate key physiological events under normal and stressful conditions for plant development. Accumulative research efforts have discovered important roles of phytohormones and their interactions in regulation of plant adaptation to numerous stressors. Intensive molecular studies have elucidated various plant hormonal pathways; each of which consist of many signaling components that link a specific hormone perception to the regulation of downstream genes. Signal transduction pathways of auxin, abscisic acid, cytokinins, gibberellins and ethylene have been thoroughly investigated. More recently, emerging signaling pathways of brassinosteroids, jasmonates, salicylic acid and strigolactones offer an exciting gateway for understanding their multiple roles in plant physiological processes. At the molecular level, phytohormonal crosstalks can be antagonistic or synergistic or additive in actions. Additionally, the signal transduction component(s) of one hormonal pathway may interplay with the signaling component(s) of other hormonal pathway(s). Together these and other research findings have revolutionized the concept of phytohormonal studies in plants. Importantly, genetic engineering now enables plant biologists to manipulate the signaling pathways of plant hormones for development of crop varieties with improved yield and stress tolerance. This book, written by internationally recognized scholars from various countries, represents the state-of-the-art understanding of plant hormones’ biology, signal transduction and implications. Aimed at a wide range of readers, including researchers, students, teachers and many others who have interests in this flourishing research field, every section is concluded with biotechnological strategies to modulate hormone contents or signal transduction pathways and crosstalk that enable us to develop crops in a sustainable manner. Given the important physiological implications of plant hormones in stressful environments, our book is finalized with chapters on phytohormonal crosstalks under abiotic and biotic stresses.

Annual Plant Reviews Plant Hormone Signaling

Annual Plant Reviews  Plant Hormone Signaling Book
Author : Peter Hedden,Stephen G. Thomas
Publisher : John Wiley & Sons
Release : 2008-04-15
ISBN : 1405173068
Language : En, Es, Fr & De

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Book Description :

Plant growth is regulated by developmental programmes that can be modified by environmental cues acting through endogenous signaling molecules including plant hormones. This volume provides an overview of the biosynthesis, catabolism, perception and signal transduction of the individual hormone classes, followed by chapters on hormone distribution and transport, and the roles of hormone signaling in specific developmental processes. Particular attention is paid to the regulation of hormone signaling by environmental and developmental cues, sites of hormone metabolism and action, and interactions between hormone signaling pathways. The book is directed at researchers and professionals in plant biochemistry and molecular biology.

Hormone Metabolism and Signaling in Plants

Hormone Metabolism and Signaling in Plants Book
Author : Jiayang Li,Chuanyou Li,Steven M Smith
Publisher : Academic Press
Release : 2017-04-19
ISBN : 0128115637
Language : En, Es, Fr & De

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Book Description :

Plant Hormones: Biosynthesis and Mechanisms of Action is based on research funded by the Chinese government’s National Natural Science Foundation of China (NSFC). This book brings a fresh understanding of hormone biology, particularly molecular mechanisms driving plant hormone actions. With growing understanding of hormone biology comes new outlooks on how mankind values and utilizes the built-in potential of plants for improvement of crops in an environmentally friendly and sustainable manner. This book is a comprehensive description of all major plant hormones: how they are synthesized and catabolized; how they are perceived by plant cells; how they trigger signal transduction; how they regulate gene expression; how they regulate plant growth, development and defense responses; and how we measure plant hormones. This is an exciting time for researchers interested in plant hormones. Plants rely on a diverse set of small molecule hormones to regulate every aspect of their biological processes including development, growth, and adaptation. Since the discovery of the first plant hormone auxin, hormones have always been the frontiers of plant biology. Although the physiological functions of most plant hormones have been studied for decades, the last 15 to 20 years have seen a dramatic progress in our understanding of the molecular mechanisms of hormone actions. The publication of the whole genome sequences of the model systems of Arabidopsis and rice, together with the advent of multidisciplinary approaches has opened the door to successful experimentation on plant hormone actions. Offers a comprehensive description of all major plant hormones including the recently discovered strigolactones and several peptide hormones Contains a chapter describing how plant hormones regulate stem cells Offers a fresh understanding of hormone biology, particularly molecular mechanisms driving plant hormone actions Discusses the built-in potential of plants for improvement of crops in an environmentally friendly and sustainable manner

Phytohormones A Window to Metabolism Signaling and Biotechnological Applications

Phytohormones  A Window to Metabolism  Signaling and Biotechnological Applications Book
Author : Lam-Son Tran,Sikander Pal
Publisher : Springer
Release : 2014-04-01
ISBN : 9781493904907
Language : En, Es, Fr & De

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Book Description :

Abiotic and biotic stresses adversely affect plant growth and productivity. The phytohormones regulate key physiological events under normal and stressful conditions for plant development. Accumulative research efforts have discovered important roles of phytohormones and their interactions in regulation of plant adaptation to numerous stressors. Intensive molecular studies have elucidated various plant hormonal pathways; each of which consist of many signaling components that link a specific hormone perception to the regulation of downstream genes. Signal transduction pathways of auxin, abscisic acid, cytokinins, gibberellins and ethylene have been thoroughly investigated. More recently, emerging signaling pathways of brassinosteroids, jasmonates, salicylic acid and strigolactones offer an exciting gateway for understanding their multiple roles in plant physiological processes. At the molecular level, phytohormonal crosstalks can be antagonistic or synergistic or additive in actions. Additionally, the signal transduction component(s) of one hormonal pathway may interplay with the signaling component(s) of other hormonal pathway(s). Together these and other research findings have revolutionized the concept of phytohormonal studies in plants. Importantly, genetic engineering now enables plant biologists to manipulate the signaling pathways of plant hormones for development of crop varieties with improved yield and stress tolerance. This book, written by internationally recognized scholars from various countries, represents the state-of-the-art understanding of plant hormones’ biology, signal transduction and implications. Aimed at a wide range of readers, including researchers, students, teachers and many others who have interests in this flourishing research field, every section is concluded with biotechnological strategies to modulate hormone contents or signal transduction pathways and crosstalk that enable us to develop crops in a sustainable manner. Given the important physiological implications of plant hormones in stressful environments, our book is finalized with chapters on phytohormonal crosstalks under abiotic and biotic stresses.

Plant Hormones

Plant Hormones Book
Author : Peter J. Davies
Publisher : Springer Science & Business Media
Release : 2007-11-06
ISBN : 1402026862
Language : En, Es, Fr & De

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Book Description :

Plant hormones play a crucial role in controlling the way in which plants grow and develop. While metabolism provides the power and building blocks for plant life, it is the hormones that regulate the speed of growth of the individual parts and integrate them to produce the form that we recognize as a plant. This book is a description of these natural chemicals: how they are synthesized and metabolized, how they act at both the organismal and molecular levels, how we measure them, a description of some of the roles they play in regulating plant growth and development, and the prospects for the genetic engineering of hormone levels or responses in crop plants. This is an updated revision of the third edition of the highly acclaimed text. Thirty-three chapters, including two totally new chapters plus four chapter updates, written by a group of fifty-five international experts, provide the latest information on Plant Hormones, particularly with reference to such new topics as signal transduction, brassinosteroids, responses to disease, and expansins. The book is not a conference proceedings but a selected collection of carefully integrated and illustrated reviews describing our knowledge of plant hormones and the experimental work that is the foundation of this information. The Revised 3rd Edition adds important information that has emerged since the original publication of the 3rd edition. This includes information on the receptors for auxin, gibberellin, abscisic acid and jasmonates, in addition to new chapters on strigolactones, the branching hormones, and florigen, the flowering hormone.

Plant Growth Regulators

Plant Growth Regulators Book
Author : Tariq Aftab
Publisher : Springer Nature
Release : 2021-07-25
ISBN : 3030611531
Language : En, Es, Fr & De

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Book Description :

Download Plant Growth Regulators book written by Tariq Aftab, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Annual Plant Reviews The Gibberellins

Annual Plant Reviews  The Gibberellins Book
Author : Peter Hedden
Publisher : John Wiley & Sons
Release : 2016-05-02
ISBN : 1119210429
Language : En, Es, Fr & De

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Book Description :

First discovered as fungal metabolites, the gibberellins were recognised as plant hormones over 50 years ago. They regulate reproductive development in all vascular plants, while their role in flowering plants has broadened to include also the regulation of growth and other developmental processes. This timely book covers the substantial and impressive recent advances in our understanding of the gibberellins and their roles in plant development, including the biosynthesis, inactivation, transport, perception and signal transduction of these important hormones. An introductory chapter traces the history of gibberellin research, describing the many discoveries that form the basis for the recent progress. The exciting emerging evidence for the interaction of gibberellin signalling with that of the other hormones is critically evaluated. The occurrence of gibberellins in fungal, bacterial and lower plant species is also discussed, with emphasis on evolution. Manipulation of gibberellin metabolism and signal transduction through chemical or genetic intervention has been an important aspect of crop husbandry for many years. The reader is presented with important information on the advances in applying gibberellin research in agriculture and horticulture. Annual Plant Reviews, Volume 49: The Gibberellins is an important resource for plant geneticists and biochemists, as well as agricultural and horticultural research workers, advanced students of plant science and university lecturers in related disciplines. It is an essential addition to the shelves of university and research institute libraries and agricultural and horticultural institutions teaching and researching plant science.

Plant Hormones

Plant Hormones Book
Author : P.J. Davies
Publisher : Springer Science & Business Media
Release : 2013-12-01
ISBN : 9401104735
Language : En, Es, Fr & De

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Book Description :

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.

Reactive Oxygen Nitrogen and Sulfur Species in Plants

Reactive Oxygen  Nitrogen and Sulfur Species in Plants Book
Author : Mirza Hasanuzzaman,Vasileios Fotopoulos,Kamrun Nahar,Masayuki Fujita
Publisher : John Wiley & Sons
Release : 2019-07-02
ISBN : 1119468647
Language : En, Es, Fr & De

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Book Description :

Presents a multidisciplinary analysis of the integration among reactive oxygen species (ROS), reactive nitrogen species (RNS), and reactive sulfur species (RSS). Since plants are the main source of our food, the improvement of their productivity is the most important task for plant biologists. In this book, leading experts accumulate the recent development in the research on oxidative stress and approaches to enhance antioxidant defense system in crop plants. They discuss both the plant responses to oxidative stress and mechanisms of abiotic stress tolerance, and cover all of the recent approaches towards understanding oxidative stress in plants, providing comprehensive information about the topics. It also discusses how reactive nitrogen species and reactive sulfur species regulate plant physiology and plant tolerance to environmental stresses. Reactive Oxygen, Nitrogen and Sulfur Species in Plants: Production, Metabolism, Signaling and Defense Mechanisms covers everything readers need to know in four comprehensive sections. It starts by looking at reactive oxygen species metabolism and antioxidant defense. Next, it covers reactive nitrogen species metabolism and signaling before going on to reactive sulfur species metabolism and signaling. The book finishes with a section that looks at crosstalk among reactive oxygen, nitrogen, and sulfur species based on current research done by experts. Presents the newest method for understanding oxidative stress in plants. Covers both the plant responses to oxidative stress and mechanisms of abiotic stress tolerance Details the integration among reactive oxygen species (ROS), reactive nitrogen species (RNS) and reactive sulfur species (RSS) Written by 140 experts in the field of plant stress physiology, crop improvement, and genetic engineering Providing a comprehensive collection of up-to-date knowledge spanning from biosynthesis and metabolism to signaling pathways implicated in the involvement of RONSS to plant defense mechanisms, Reactive Oxygen, Nitrogen and Sulfur Species in Plants: Production, Metabolism, Signaling and Defense Mechanisms is an excellent book for plant breeders, molecular biologists, and plant physiologists, as well as a guide for students in the field of Plant Science.

Phytohormones and Abiotic Stress Tolerance in Plants

Phytohormones and Abiotic Stress Tolerance in Plants Book
Author : Nafees A. Khan,Rahat Nazar,Noushina Iqbal,Naser A. Anjum
Publisher : Springer Science & Business Media
Release : 2012-03-17
ISBN : 364225828X
Language : En, Es, Fr & De

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Book Description :

Plants are sessile and prone to multiple stresses in the changing environmental conditions. Of the several strategies adopted by plants to counteract the adverse effects of abiotic stress, phytohormones provide signals to allow plants to survive under stress conditions. They are one of the key systems integrating metabolic and developmental events in the whole plant and the response of plants to external factors and are essential for many processes throughout the life of a plant and influence the yield and quality of crops. The book ‘Phytohormones and Abiotic Stress Tolerance in Plants’ summarizes the current body of knowledge on crosstalk between plant stresses under the influence of phytohormones, and provides state-of-the-art knowledge of recent developments in understanding the role of phytohormones and abiotic stress tolerance in plants. This book presents information on how modulation in phytohormone levels affect regulation of biochemical and molecular mechanisms.

Jasmonate Metabolism and Signaling in Abiotic Stress and Male Reproductive Development

Jasmonate Metabolism and Signaling in Abiotic Stress and Male Reproductive Development Book
Author : Jeremy Burke Jewell,Washington State University. Program in Molecular Plant Sciences
Publisher : Unknown
Release : 2014
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Jasmonic acid (JA) is a plant hormone with essential roles in reproductive development and in regulation of plant responses to multiple stresses. Very recently the isoleucine-conjugated derivative of jasmonic acid, jasmonoyl-isoleucine (JA-Ile), has been identified as the molecularly active form of the hormone. This information, coupled with the recent identification of the core jasmonate signaling module allows for productive reverse-genetic interrogation of mechanisms of JA-Ile inactivation. ILL6 was identified as an Arabidopsis gene whose expression is closely correlated with the Jasmonate ZIM-Domain (JAZ) genes, which encode essential components of the jasmonate co-receptor complex. Like the JAZ genes, ILL6 is rapidly induced by jasmonate treatment and wounding. ill6 mutant plants were identified and observed to be hypersensitive to jasmonate-mediated inhibition of root and leaf growth. In addition, these mutants accumulated significantly more wound-induced JA-Ile than wild type plants. Consistent with the similarity of the ILL6 protein to other hormone-amino acid conjugate hydrolases, ill6 mutant plants hydrolyzed substantially less exogenously-applied radiolabeled JA-Ile than did wild type plants. A cyp94b3 mutant that accumulates more JA-Ile than wild type was found to hydrolyze significantly more JA-Ile than wild type, and this increased JA-Ile hydrolysis was dependent on ILL6, indicating that JA-Ile rather than any other JA-Ile derived metabolite is the in vivo substrate for ILL6. In other experiments I confirmed previous reports that indicated increased jasmonate signaling in response to external sulfate deficiency. Importantly, an increased capacity for jasmonic acid biosynthesis was seen in sulfate-deprived plants, and jasmonate biosynthesis and perception mutants were found to be defective in senescence induced by sulfate-deficiency. Finally, I used tissue-specific complementation of the male-sterile jasmonate-insensitive mutant coi1 to interrogate in which tissues of the Arabidopsis stamen jasmonate perception is sufficient for male fertility. Complementation of jasmonate perception in the stamen epidermis using the WUSCHEL or COI1 promoters resulted in complete rescue of male fertility. This surprising result indicates the presence of a previously undiscovered cell non-autonomous signal triggered by JA-Ile perception in the anther epidermis to initiate pollen maturation. In summary this dissertation reports a novel pathway for JA-Ile inactivation, a novel role for JA signaling in sulfate-deficiency-induced senescence, and clarification of the essential site of perception in JA-mediated reproductive development.

Lipid signaling in plants

Lipid signaling in plants Book
Author : Anonim
Publisher : Frontiers E-books
Release : 2021-07-25
ISBN : 2889191486
Language : En, Es, Fr & De

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Book Description :

Download Lipid signaling in plants book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Mechanism of Plant Hormone Signaling under Stress

Mechanism of Plant Hormone Signaling under Stress Book
Author : Girdhar K. Pandey
Publisher : John Wiley & Sons
Release : 2017-03-24
ISBN : 1118888766
Language : En, Es, Fr & De

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Book Description :

Plant hormone signaling plays an important role in many physiological and developmental processes including stress response. With the advent of new post-genomic molecular techniques, the potential for increasing our understanding of the impact of hormone signaling on gene expression and adaptive processes has never been higher. Unlocking the molecular underpinnings of these processes shows great promise for the development of new plant biotechnologies and improved crop varieties. The topics included in this book emphasize on genomics and functional genomics aspects, to understand the global and whole genome level changes upon particular stress conditions. With the functional genomics tools, the mechanism of phytohormone signaling and their target genes can be defined in a more systematic manner. The integrated analysis of phytohormone signaling under single or multiple stress conditions may prove exceptional to design stress tolerant crop plants in the field conditions. Bringing together the latest advances, as well as the work being done to apply these findings to plant and crop science, Mechanism of Plant Hormone Signaling Under Stress will prove extremely useful to plant and stress biologists, plant biotechnology researchers, as well as students and teachers.

Abscisic Acid in Plants

Abscisic Acid in Plants Book
Author : Anonim
Publisher : Academic Press
Release : 2019-11-21
ISBN : 0081026218
Language : En, Es, Fr & De

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Book Description :

Abscisic Acid in Plants, Volume 92, the latest release in the Advances in Botanical Research series, is a compilation of the current state-of-the-art on the topic. Chapters in this new release comprehensively describe latest knowledge on how ABA functions as a plant hormone. They cover topics related to molecular mechanisms as well as the biochemical and chemical aspects of ABA action: hormone biosynthesis, catabolism, transport, perception, signaling in plants, seeds and in response to biotic and abiotic stresses, hormone evolution and chemical biology, and much more. Presents the latest release in the Advances in Botanical Research series Provides an Ideal resource for post-graduates and researchers in the plant sciences, including plant physiology, plant genetics, plant biochemistry, plant pathology, and plant evolution Contains contributions from internationally recognized authorities in their respective fields

Auxin and Its Role in Plant Development

Auxin and Its Role in Plant Development Book
Author : Eva Zažímalová,Jan Petrášek,Eva Benková
Publisher : Springer
Release : 2014-06-26
ISBN : 3709115264
Language : En, Es, Fr & De

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Book Description :

Auxin is an important signaling compound in plants and vital for plant development and growth. The present book, Auxin and its Role in Plant Development, provides the reader with detailed and comprehensive insight into the functioning of the molecule on the whole and specifically in plant development. In the first part, the functioning, metabolism and signaling pathways of auxin in plants are explained, the second part depicts the specific role of auxin in plant development and the third part describes the interaction and functioning of the signaling compound upon stimuli of the environment. Each chapter is written by international experts in the respective field and designed for scientists and researchers in plant biology, plant development and cell biology to summarize the recent progress in understanding the role of auxin and suggest future perspectives for auxin research.

Peroxisomes and their Key Role in Cellular Signaling and Metabolism

Peroxisomes and their Key Role in Cellular Signaling and Metabolism Book
Author : Luis A. del Río
Publisher : Springer Science & Business Media
Release : 2013-07-03
ISBN : 9400768893
Language : En, Es, Fr & De

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Book Description :

Peroxisomes are a class of ubiquitous and dynamic single membrane-bounded cell organelles, devoid of DNA, with an essentially oxidative type of metabolism. In recent years it has become increasingly clear that peroxisomes are involved in a range of important cellular functions in almost all eukaryotic cells. In higher eukaryotes, including humans, peroxisomes catalyze ether phospholipids biosynthesis, fatty acid alpha-oxidation, glyoxylate detoxification, etc, and in humans peroxisomes are associated with several important genetic diseases. In plants, peroxisomes carry out the fatty acid beta-oxidation, photorespiration, metabolism of ROS, RNS and RSS, photomorphogenesis, biosynthesis of phytohormones, senescence, and defence against pathogens and herbivores. In recent years it has been postulated a possible contribution of peroxisomes to cellular signaling. In this volume an updated view of the capacity and function of peroxisomes from human, animal, fungal and plant origin as cell generators of different signal molecules involved in distinct processes of high physiological importance is presented.

SALICYLIC ACID

SALICYLIC ACID Book
Author : Shamsul Hayat,Aqil Ahmad,Mohammed Nasser Alyemeni
Publisher : Springer Science & Business Media
Release : 2013-04-16
ISBN : 9400764286
Language : En, Es, Fr & De

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Book Description :

The book “Salicylic acid: A Plant Hormone” was first published in 1997 and was praised for its excellent balance of traditional and modern topics. This time, we're building on the success of the prior edition to provide an even more effective second edition. The present book is comprised of 16 chapters highlighting the updated mechanisms of its biosynthesis, physiological role, its action in response to water deficit, relationship of SA with signal transduction, transport of SA and related compounds. Further, the interplay between environmental signals and SA, its impact on transport and distribution of sugars, salicylic acid mediated stress-induced flowering and some aspects of interplay of SA with JA during the establishment of plant resistance to pathogens with different types of nutrition and participation of peroxidases have also been discussed at length. Potential use of SA in food production and its efficiency on post-harvest of perishable crops as well as practical use of SA are also covered. ​ ​

Abscisic Acid Metabolism Transport and Signaling

Abscisic Acid  Metabolism  Transport and Signaling Book
Author : Da-Peng Zhang
Publisher : Springer
Release : 2014-10-10
ISBN : 9401794243
Language : En, Es, Fr & De

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Book Description :

This book provides a comprehensive review of all aspects of the molecular and cell biology of abscisic acid (ABA) metabolism, transport and signal transduction, covering our current understanding of ABA as well as research trends. The agricultural significance of ABA metabolism, transport and signal transduction is also discussed. The phytohormone ABA regulates many aspects of plant development and plays a central role in plant adaptation to environmental stresses. Over the past few decades, considerable advances have been made in the study of ABA metabolism, transport and signal transduction, greatly deepening our understanding of the underlying mechanisms of ABA function at the molecular, cell and whole-plant level and helping us improve crops’ environmental tolerance. This book provides a valuable resource for researchers and advanced students interested in plant biology and agriculture.

Recent Advances in Understanding Plant Hormone Transporters

Recent Advances in Understanding Plant Hormone Transporters Book
Author : Markus Geisler
Publisher : Frontiers Media SA
Release : 2020-04-24
ISBN : 2889636860
Language : En, Es, Fr & De

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Book Description :

Since the first postulation of auxin function by the Darwins, many other plant hormones have been identified and most of them have been found to be synthesized at different sites from their places of action. Hormone transport and thus the responsible hormone transporters are therefore essential for a precise regulation of plant hormone action, which has been repeatedly supported by severe developmental and physiological phenotypes reported for hormone transporter loss-of-function mutants. Plant transporters have been shown to be involved in short and long-distance transport of hormones. Short-distance transport between cells seems to be sufficient for a local hormone action in some tissues (such as seeds), which seem to require exporter and importer proteins in adjacent cells as shown for example for abscisic acid. During long distance transport with the transpiration stream or in the phloem, demonstrated for many (but not all) plant hormones (including auxins, abscisic acid, cytokinins, gibberelins, strigolactones, and salicylic acid), transporters are thought to function in loading and unloading processes. Similarly, in cases where long-distance transport is achieved by cell-to-cell transport (such as for auxins), the highly coordinated action of import and export transporters at the contact surfaces of neighboring cells is apparently needed, however, all these processes are far from being understood on the molecular level. Currently, it appears that many hormones are transported by members of distinct transporter classes, ranging from primary active pumps (that couple hormone translocation to direct ATP hydrolysis), antiporters and symporters (that use the proton motive force to create hormone concentration gradients), and to facilitators. Among those, the ATP-binding cassette (ABC) family and the Nitrate transport1/ Peptide transporter family (NPF) seem to be dominant but currently it is unclear how individual transporters cooperate to achieve a systemic level of transport. Furthermore, in most cases several pairs of importers and exporters are required but how these are correct allocated in order to guarantee the function of a complex hormonal network is unknown. While remarkable progress has been made on hormone transporter regulation on the transcription and post-transcriptional level for transporters involved in long-distance transport (such as auxin), regulation of transporter trafficking, stability and activity is less understood for other hormones.