Download or read book Analysis of the Roles of Salicylic Acid and NIM1 NPR1 in Arabidopsis Thaliana Pathogen Defense written by Gregory James Rairdan and published by . This book was released on 2002 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of the Roles of Salicyclic Acid and NIM1 NPR1 in Arabidopsis Thaliana Pathogen Defense written by Gregory James Rairdan and published by . This book was released on 2002 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plants have highly regulated signal transduction networks that control a rapid and potent antagonistic response to pathogenic organisms. I sought to better define these defense networks with respect to two molecules known to be important in plant defense: salicylic acid (SA) and the NIM1/NPR1 protein. I have used the model crucifer, Arabidopsis thaliana, to further define the role that these molecules play in race-specific resistance to Peronospora parasitica, and Pseudomonas syringae, oomycetic and bacterial pathogens, respectively. Plant resistance (R) genes encode proteins that initiate rapid, local, race-specific resistance against pathogens expressing a cognate avirulence (avr) gene. In Arabidopsis, most known R proteins contain leucine-rich repeats and a nucleotide binding domain, in combination with either a coiled-coiled domain or a Toll-Interleukin-1-homologous domain at their amino terminus. I tested if SA and/or NIM1/NPR1 was necessary for these two types of R genes to confer resistance to P. parasitica or P. syringae. The R genes RPM1, RPS2, RPS4, and RPP8 all required SA, but not NIM1/NPR1 for effective resistance, while RPP5 required both. These experiments, in addition to previous data, showed that there are defense responses which operated independently of NIM1/NPR1 and SA. We attempted to define some of the proteins important to NIM1/NPR1 and SA-independent defense responses by identifying genes that are expressed in response to pathogens, in SA-depleted (NahG) or nim1/npr1 mutant plants. Using cDNA-AFLP, we identified genes that are induced in wild-type, nim1 and NahG (SA-depleted) plants, genes induced in wild-type and nim1 plants, but not NahG plants, and genes induced only in wild-type plants. We further analyzed the expression of these genes to define their regulatory requirements, and determine whether these requirements varied according to the stimulus. We chose one SA-dependent, NIM1/NPR1-independently regulated gene, NIR1, for further study. I generated transgenic Arabidopsis expressing NIR1 promoter::GUS reporter construct and studied spatial NIR1-promoter-regulated expression in wild-type and npr1-2 backgrounds. In an effort to understand the role played by NIR genes, a mutagenized population of NIR1p::GUS npr1-2 plants was screened to identify mutants that underexpressed NIR1, and possible other NIR genes. One mutant, nue1 (N & barbelow;IR1-u & barbelow;ndere & barbelow;xpresser) was identified and characterized.
Download or read book Molecular and Genetic Analyses of NIM1 NPR1 independent Defense Responses in Arabidopsis Thaliana written by Cristiana Argueso and published by . This book was released on 2004 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Salicylic Acid Signaling Networks written by Hua Lu and published by Frontiers Media SA. This book was released on 2016-05-26 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The small phenolic compound salicylic acid (SA) is critical for plant defense against a broad spectrum of pathogens. SA is also involved in multi-layered defense responses, from pathogen-associated molecular pattern triggered basal defense, resistance gene-mediated defense, to systemic acquired resistance. Recent decades have witnessed tremendous progress towards our understanding of SA-mediated signaling networks. Many genes have been identified to have direct or indirect effect on SA biosynthesis or to regulate SA accumulation. Several SA receptors have been identified and characterization of these receptors has shed light on the mechanisms of SA-mediated defense signaling, which encompass chromosomal remodeling, DNA repair, epigenetics, to transcriptional reprogramming. Molecules from plant-associated microbes have been identified, which manipulate SA levels signaling. SA does not act alone. It engages in crosstalk with other signaling pathways, such as those mediated by other phytohormones, in an agonistic or antagonistic manner, depending on hormones and pathosystems. Besides affecting plant innate immunity, SA has also been implicated in other cellular processes, such as flowering time determination, lipid metabolism, circadian clock control, and abiotic stress responses, possibly contributing to the regulation of plant development. The multifaceted function of SA makes it critically important to further identify genes involved in SA signaling networks, understand their modes of action, and delineate interactions among the components of SA signaling networks. In addition, genetic manipulation of genes involved in SA signaling networks has also provided a promising approach to enhance disease resistance in economically important plants. This ebook collects articles in the research topic “Salicylic Acid Signaling Networks.” For this collection we solicited reviews, perspectives, and original research articles that highlight recent exciting progress on the understanding of molecular mechanisms underlying SA-mediated defense, SA-crosstalk with other pathways and how microbes impact these events.
Download or read book Mechanisms of Resistance to Plant Diseases written by R.S. Fraser and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant resistance to pathogens is one of the most important strategies of disease control. Knowledge of resistance mechanisms, and of how to exploit them, has made a significant contribution to agricultural productivity. However, the continuous evolution of new variants of pathogen, ana additional control problems posed by new crops and agricultural methods, creates a need for a corresponding increase in our understanding of resistance and ability to utilize it. The study of resistance mechanisms also has attractions from a purely academic point of view. First there is the breadth of the problem, which can be approached at the genetical, molecular, cellular, whole plant or population lev~ls. Often there is the possibility of productive exchange of ideas between different disciplines. Then there is the fact that despite recent advances, many of the mechanisms involved have still to be fully elucidated. Finally, and compared with workers in other areas of biology, the student of resistance is twice blessed in having as his subject the interaction of two or more organisms, with the intriguing problems of recognition, specificity and co-evolution which this raises.
Download or read book The Arabidopsis NPR1 Protein Is a Receptor for the Plant Defense Hormone Salicylic Acid written by Yue Wu and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Plant Immunity written by Guido Sessa and published by John Wiley & Sons. This book was released on 2012-10-15 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Plant Immunity provides an integrated look at both well-established and emerging concepts in plant disease resistance providing the most current information on this important vitally important topic within plant biology. Understanding the molecular basis of the plant immune system has implications on the development of new varieties of sustainable crops, understanding the challenges plant life will face in changing environments, as well as providing a window into immune function that could have translational appeal to human medicine. Molecular Plant Immunity opens with chapters reviewing how the first line of plant immune response is activated followed by chapters looking at the molecular mechanisms that allow fungi, bacteria, and oomycetes to circumvent those defenses. Plant resistance proteins, which provide the second line of plant immune defense, are then covered followed by chapters on the role of hormones in immunity and the mechanisms that modulate specific interaction between plants and viruses. The final chapters look at model plant-pathogen systems to review interaction between plants and fungal, bacterial, and viral pathogens. Written by a leading team of international experts, Molecular Plant Immunity will provide a needed resource to diverse research community investigated plant immunity.
Download or read book Calcium Transport Elements in Plants written by Santosh Kumar Upadhyay and published by Academic Press. This book was released on 2021-01-08 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calcium Transport Elements in Plants discusses the role of calcium in plant development and stress signaling, the mechanism of Ca2+ homeostasis across plant membranes, and the evolution of Ca2+/cation antiporter (CaCA) superfamily proteins. Additional sections cover genome-wide analysis of Annexins and their roles in plants, the roles of calmodulin in abiotic stress responses, calcium transport in relation to plant nutrition/biofortification, and much more. Written by leading experts in the field, this title is an essential resource for students and researchers that need all of the information on calcium transport elements in one place. Calcium transport elements are involved in various structural, physiological and biochemical processes or signal transduction pathways in response to various abiotic and biotic stimuli. Development of high throughput sequencing technology has favored the identification and characterization of numerous gene families in plants in recent years, including the calcium transport elements. Provides a complete compilation of detailed information on Ca2+ efflux and influx transporters in plants Discusses the mode of action of calcium transport elements and their classification Explores the indispensable role of Ca2+ in numerous developmental and stress related pathways
Download or read book Sustainable disease management in a European context written by David B. Collinge and published by Springer Science & Business Media. This book was released on 2009-01-23 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main theme of the book is sustainable disease management in a European context. Some of the questions addressed are: How does society benefit from plant pathology research? How can new molecular approaches solve relevant problems in disease management? What other fields can we exploit in plant pathology research? What challenges are associated with free trade across the new borders? How can we contribute to solving problems of developing countries? How does plant pathology contribute to food quality and safety? How does globalization/internationalization affect teaching and extension in plant pathology?
Download or read book Jasmonate Signaling written by Alain Goossens and published by Humana. This book was released on 2016-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is now well established that jasmonates, originally identified as the major component of jasmine scent, play a universal role in the plant kingdom and are involved in the regulation of diverse aspects of plant biology, including growth, development, metabolism, and interaction with the environment. In Jasmonate Signaling: Methods and Protocols, experts in the field aim to unite powerful emerging omics platforms with a number of key reductionist approaches to form a comprehensive collection of tools and protocols. The detailed chapters in this book embrace physiological, environmental, molecular, omics, and bioinformatics approaches that allow dissecting jasmonate actions in the model species Arabidopsis thaliana or in other plants. Written in the highly successful Methods in Molecular Biology series format, chapters feature introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, along with tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Jasmonate Signaling: Methods and Protocols will empower interested researchers to dissect all steps of jasmonate signaling and the processes they modulate.
Download or read book Hi C Data Analysis written by Silvio Bicciato and published by Humana. This book was released on 2022-09-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume details a comprehensive set of methods and tools for Hi-C data processing, analysis, and interpretation. Chapters cover applications of Hi-C to address a variety of biological problems, with a specific focus on state-of-the-art computational procedures adopted for the data analysis. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Hi-C Data Analysis: Methods and Protocols aims to help computational and molecular biologists working in the field of chromatin 3D architecture and transcription regulation.
Download or read book SALICYLIC ACID written by Shamsul Hayat and published by Springer Science & Business Media. This book was released on 2013-04-16 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Comprehensive and Molecular Phytopathology written by Yuri Dyakov and published by Elsevier. This book was released on 2007-01-09 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of information on successive steps of molecular ‘dialogue’ between plants and pathogens. It additionally presents data that reflects intrinsic logic of plant-parasite interactions. New findings discussed include: host and non-host resistance, specific and nonspecific elicitors, elicitors and suppressors, and plant and animal immunity. This book enables the reader to understand how to promote or prevent disease development, and allows them to systematize their own ideas of plant-pathogen interactions. * Offers a more extensive scope of the problem as compared to other books in the market* Presents data to allow consideration of host-parasite relationships in dynamics and reveals interrelations between pathogenicity and resistance factors* Discusses beneficial plant-microbe interactions and practical aspects of molecular investigations of plant-parasite relationships* Compares historical study of common and specific features of plant immunity with animal immunity
Download or read book Phytohormones A Window to Metabolism Signaling and Biotechnological Applications written by Lam-Son Phan Tran and published by Springer Science & Business Media. This book was released on 2014-04-01 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Effectors in Plant Microbe Interactions written by Francis Martin and published by John Wiley & Sons. This book was released on 2012-01-03 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plants and microbes interact in a complex relationship that can have both harmful and beneficial impacts on both plant and microbial communities. Effectors, secreted microbial molecules that alter plant processes and facilitate colonization, are central to understanding the complicated interplay between plants and microbes. Effectors in Plant-Microbe Interactions unlocks the molecular basis of this important class of microbial molecules and describes their diverse and complex interactions with host plants. Effectors in Plant Microbe Interactions is divided into five sections that take stock of the current knowledge on effectors of plant-associated organisms. Coverage ranges from the impact of bacterial, fungal and oomycete effectors on plant immunity and high-throughput genomic analysis of effectors to the function and trafficking of these microbial molecules. The final section looks at effectors secreted by other eukaryotic microbes that are the focus of current and future research efforts. Written by leading international experts in plant-microbe interactions, Effectors in Plant Microbe Interactions, will be an essential volume for plant biologists, microbiologists, pathologists, and geneticists.
Download or read book Genomics of Tropical Crop Plants written by Paul H. Moore and published by Springer Science & Business Media. This book was released on 2008-01-03 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a long time there has been a critical need for a book to assess the genomics of tropical plant species. At last, here it is. This brilliant book covers recent progress on genome research in tropical crop plants, including the development of molecular markers, and many more subjects. The first section provides information on crops relevant to tropical agriculture. The book then moves on to lay out summaries of genomic research for the most important tropical crop plant species.
Download or read book Biotic and Abiotic Stress Tolerance in Plants written by Sharad Vats and published by Springer. This book was released on 2018-06-11 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights some of the most important biochemical, physiological and molecular aspects of plant stress, together with the latest updates. It is divided into 14 chapters, written by eminent experts from around the globe and highlighting the effects of plant stress (biotic and abiotic) on the photosynthetic apparatus, metabolites, programmed cell death, germination etc. In turn, the role of beneficial elements, glutathione-S-transferase, phosphite and nitric oxide in the adaptive response of plants under stress and as a stimulator of better plant performance is also discussed. A dedicated chapter addresses research advances in connection with Capsicum, a commercially important plant, and stress tolerance, from classical breeding to the recent use of large-scale transcriptome and genome sequencing technologies. The book also explores the significance of the liliputians of the plant kingdom (Bryophytes) as biomonitors/bioindicators, and general and specialized bioinformatics resources that can benefit anyone working in the field of plant stress biology. Given the information compiled here, the book will offer a valuable guide for students and researchers of plant molecular biology and stress physiology alike.
