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Recent Advances in Understanding Plant Hormone Transporters

Recent Advances in Understanding Plant Hormone Transporters PDF Author: Markus Geisler
Publisher: Frontiers Media SA
ISBN: 2889636860
Category :
Languages : en
Pages : 164

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.

Recent Advances in Understanding Plant Hormone Transporters

Recent Advances in Understanding Plant Hormone Transporters PDF Author: Markus Geisler
Publisher: Frontiers Media SA
ISBN: 2889636860
Category :
Languages : en
Pages : 164

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.

Hormone Metabolism and Signaling in Plants

Hormone Metabolism and Signaling in Plants PDF Author: Jiayang Li
Publisher: Academic Press
ISBN: 0128115637
Category : Science
Languages : en
Pages : 618

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

Plant ABC Transporters

Plant ABC Transporters PDF Author: Markus Geisler
Publisher: Springer
ISBN: 3319065114
Category : Science
Languages : en
Pages : 333

Book Description
This book is devoted to the fascinating superfamily of plant ATP-binding cassette (ABC) transporters and their variety of transported substrates. It highlights their exciting biological functions, covering aspects ranging from cellular detoxification, through development, to symbiosis and defense. Moreover, it also includes a number of chapters that center on ABC transporters from non-Arabidopsis species. ABC proteins are ubiquitous, membrane-intrinsic transporters that catalyze the primary (ATP-dependent) movement of their substrates through biological membranes. Initially identified as an essential aspect of a vacuolar detoxification process, genetic work in the last decade has revealed an unexpectedly diverse variety of ABC transporter substrates, which include not only xenobiotic conjugates, but also heavy metals, lipids, terpenoids, lignols, alkaloids and organic acids. The discovery that members of the ABCB and ABCG family are involved in the movement of phytohormones has further sparked their exploration and provided a new understanding of the whole family. Accordingly, the trafficking, regulation and structure-function of ABCB-type auxin transporters are especially emphasized in this book.

Plant Chemical Biology

Plant Chemical Biology PDF Author: Dominique Audenaert
Publisher: John Wiley & Sons
ISBN: 1118742745
Category : Science
Languages : en
Pages : 384

Book Description
Demonstrates how advances in plant chemical biology can translate to field applications With contributions from a team of leading researchers and pioneers in the field, this book explains how chemical biology is used as a tool to enhance our understanding of plant biology. Readers are introduced to a variety of chemical biology studies that have provided novel insights into plant physiology and plant cellular processes. Moreover, they will discover that chemical biology not only leads to a better understanding of the underlying mechanisms of plant biology, but also the development of practical applications. For example, the authors discuss small molecules that can be used to identify targets of herbicides and develop new herbicides and plant growth regulators. The book begins with a historical perspective on plant chemical biology. Next, the authors introduce the chemical biology toolbox needed to perform successful studies, with chapters covering: Sources of small molecules Identification of new chemical tools by high-throughput screening (HTS) Use of chemical biology to study plant physiology Use of chemical biology to study plant cellular processes Target identification Translation of plant chemical biology from the lab to the field Based on the latest findings and extensively referenced, the book explores available compound collections, principles of assay design, and the use of new research tools for the development of new applications. Plant Chemical Biology is recommended for students and professionals in all facets of plant biology, including molecular biology, physiology, biochemistry, agriculture, horticulture, and agronomy. All readers will discover new approaches that can lead to the development of a healthier and more plentiful global food supply.

Auxin and Its Role in Plant Development

Auxin and Its Role in Plant Development PDF Author: Eva Zažímalová
Publisher: Springer
ISBN: 3709115264
Category : Science
Languages : en
Pages : 442

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.

The Power of Movement in Plants

The Power of Movement in Plants PDF Author: Charles Robert Darwin
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 610

Book Description


Plant Hormones

Plant Hormones PDF Author: Peter J. Davies
Publisher: Springer Science & Business Media
ISBN: 1402026862
Category : Science
Languages : en
Pages : 830

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.

Abscisic Acid in Plants

Abscisic Acid in Plants PDF Author:
Publisher: Academic Press
ISBN: 0081026218
Category : Science
Languages : en
Pages : 386

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

Plant Hormones under Challenging Environmental Factors

Plant Hormones under Challenging Environmental Factors PDF Author: Golam Jalal Ahammed
Publisher: Springer
ISBN: 9401777586
Category : Science
Languages : en
Pages : 278

Book Description
This book presents recent advances in understanding the physiological and molecular mechanisms of different abiotic stresses such as high or low temperature, salinity, drought, flooding, soil acidity, heavy metals, light stress and ozone stress, and discusses the multifaceted role of phytohormones in stress adaptation and the underlying mechanisms. Aimed at students and researchers in the field of plant science, it offers a comprehensive overview of the versatile roles and interactions of different phytohormones in response to a specific stress factor and examines the possible physiological and molecular mechanisms that have been the subject of recent research.

Comprehensive Natural Products II

Comprehensive Natural Products II PDF Author:
Publisher: Elsevier
ISBN: 0080453821
Category : Science
Languages : en
Pages : 7944

Book Description
This work presents a definitive interpretation of the current status of and future trends in natural products—a dynamic field at the intersection of chemistry and biology concerned with isolation, identification, structure elucidation, and chemical characteristics of naturally occurring compounds such as pheromones, carbohydrates, nucleic acids, and enzymes. With more than 1,800 color figures, Comprehensive Natural Products II features 100% new material and complements rather than replaces the original work (©1999). Reviews the accumulated efforts of chemical and biological research to understand living organisms and their distinctive effects on health and medicine Stimulates new ideas among the established natural products research community—which includes chemists, biochemists, biologists, botanists, and pharmacologists Informs and inspires students and newcomers to the field with accessible content in a range of delivery formats Includes 100% new content, with more than 6,000 figures (1/3 of these in color) and 40,000 references to the primary literature, for a thorough examination of the field Highlights new research and innovations concerning living organisms and their distinctive role in our understanding and improvement of human health, genomics, ecology/environment, and more Adds to the rich body of work that is the first edition, which will be available for the first time in a convenient online format giving researchers complete access to authoritative Natural Products content