This contributed volume explores how plant growth-promoting rhizobacterias (PGPR) provide a wide range of benefits to the plant. Further, it discusses the key roles PGPR play in nutrient acquisition and assimilation, improved soil texture, secreting, and modulating extracellular molecules. The book outlines how plant secondary metabolites are natural sources of biologically active compounds used in a wide range of applications, and surveys the significant role of volatile organic compounds (VOCs) in plant communication by mediating above- and below-ground interactions between plants and the surrounding organisms. This volume compiles research from leading scientists from across the globe, linking the translation of basic knowledge to innovative applied research. The book focuses on the following three categories: 1) understanding the secondary metabolites produced by PGPR, the signaling mechanisms and how they affect plant growth, 2) the plausible role of volatile organic compounds produced by PGPR, their role and the signaling mechanism for plant growth promotion, and 3) Applications of VOCs and secondary metabolites of PGPR for seed germination, plant growth promotion; stress tolerance and in-plant health and immunity.

Recent changes in the pattern of agricultural practices from use of hazardous pesticides to natural (organic) cultivation has brought into focus the use of agriculturally important microorganisms for carrying out analogous functions. The reputation of plant growth promoting rhizomicroorganisms (PGPRs) is due to their antagonistic mechanisms against most of the fungal and bacterial phytopathogens. The biocontrol potential of agriculturally important microorganisms is mostly attributed to their bioactive secondary metabolites. However, low shelf life of many potential agriculturally important microorganisms impairs their use in agriculture and adoption by farmers. The focal theme of this book is to highlight the potential of employing biosynthesized secondary metabolites (SMs) from agriculturally important microorganisms for management of notorious phytopathogens, as a substitute of the currently available whole organism formulations and also as alternatives to hazardous synthetic pesticides. Accordingly, we have incorporated a comprehensive rundown of sections which particularly examine the SMs synthesized, secreted and induced by various agriculturally important microorganisms and their applications in agriculture. Section 1 includes discussion on biosynthesized antimicrobial secondary metabolites from fungal biocontrol agents. This section will cover the various issues such as development of formulation of secondary metabolites, genomic basis of metabolic diversity, metabolomic profiling of fungal biocontrol agents, novel classes of antimicrobial peptides. The section 1 will also cover the role of these secondary metabolites in antagonist-host interaction and application of biosynthesized antimicrobial secondary metabolites for management of plant diseases. Section 2 will discuss the biosynthesized secondary metabolites from bacterial PGPRs, strain dependent effects on plant metabolome profile, bio-prospecting various isolates of bacterial PGPRs for potential secondary metabolites and non-target effects of PGPR on microbial community structure and functions. Section 3 encompasses synthesis of antimicrobial secondary metabolites from beneficial endophytes, bio-prospecting medicinal and aromatic hosts and effect of endophytic SMs on plants under biotic and biotic stress conditions.

The Chemical Dialogue Between Plants and Beneficial Microorganisms provides foundational insights on plant beneficial microorganisms and their impact on the health and productivity of plants. Providing in-depth and recent updates about unexplored aspects of plant microbes interactions, the book includes the biological repertoire of arbuscular mycorrhizal association, molecular architecture of Rhizobium-plant symbiosis, and endophytes in transcriptional plasticity during host colonization by endophytes. The book also includes details about the mechanism of different plant beneficial microorganisms, how these differ, and their cross signaling. This book will be an important reference for researchers working on different plant beneficial microorganisms and their molecular arsenal. - Includes coverage of oxylipins?and sterols in inducing systemic responses - Explores the role of microbes in transcriptional plasticity of host plants - Highlights the biology of vegetative cells, N2-fixing vesicles, and microbial volatiles in plant growth

This edited volume is an inclusive collection of information on crop holobiome, their function and diversity, the plausible role of soil microbes in crop growth, protection from pathogens and stresses, the use of resilient microbiomes for changing climate, and the use of new technologies to study plant-insect-microbe molecular interactions in agricultural systems. Holobiomes provide information about both plants and their microbiomes, which gives a more comprehensive insight, particularly for changing climatic scenarios. By optimizing the crop holobime function crop productivity and plant health can be enhanced manifold. This book deep dives into the numerous ways in which holobiome supports the improving plant health, nutrient uptake, disease control, and stress resistance in major food crops. It helps researchers, academicians, agri-entrepreneurs, and technologists understand the structure and function of holobiomes in crop growth, health, stress tolerance under climatic changes, and holobiome diversity and evolution. The book is also helpful in designing new dimensions in the holobiome research and development of new products and technologies. This volume is of interest and useful to agriculture scientists, microbiologists, ecologists, and is a valuable source of reference to researchers and students.

This book presents state-of-the-art research on the many facets of the plant microbiome, including diversity, ecology, physiology and genomics, as well as molecular mechanisms of plant-microbe interactions. Topics considered include the importance of microbial secondary metabolites in stimulating plant growth, induced systemic resistance, tolerance to abiotic stress, and biological control of plant pathogens. The respective contributions show how microbes help plants to cope with abiotic stresses, and represent significant progress toward understanding the complex regulatory networks critical to host-microbe interaction and plant adaptation in extreme environments. New insights into the mechanisms of microbial actions in inducing plant stress tolerance open new doors for improving the efficacy of microbial strategies, and could produce new ways of economically increasing crop yields without harming the environment. As such, this book offers an essential resource for students and researchers with an interest in plant-microbe interaction, as well as several possibilities for employing the plant microbiome in the enhancement of crop productivity under future climate change scenarios.

To meet the food security needs of the 21st century, this book focuses on ecofriendly and sustainable production technologies based on plant growth promoting rhizobacteria (PGPR). It is estimated that the global population could increase to 9 billion by 2050. Further, the amount of land devoted to farming has decreased. Soil is a living entity, and is not only a valuable natural resource for agricultural and food security, but also for the preservation of all life processes. Agricultural productivity rests on the foundation of microbial diversity in the soil, and in recent years, PGPR have emerged as an important and promising tool for sustainable agriculture. The injudicious use of agrochemicals by farmers has created a range of negative impacts, not only threatening the environment, but also destroying useful microorganisms in the soil. The efficient use of PGPR reduces the need for these chemicals while simultaneously lowering production costs. In turn, increased yields could provide a more favourable environment and encourage sustainability. This book assesses the impacts of PGPR on crops, environmental and socio-economic sustainability, and demonstrates these ecofriendly technologies’ three critical advantages, namely (a) enhanced crop productivity, (b) reduced application of agrochemicals, and (c) increased incomes for farmers. Besides offering an economically attractive and ecologically sound means of augmenting the nutrient supply and combatting soil-borne pathogens, PGPR play an important part in boosting soil fertility, bioremediation and stress management for the development of ecofriendly and sustainable agriculture.

This book describes the various applications of microorganisms in improving plant growth, health and the efficiency of phytochemical production. The chapters trace topics such as the role of PGPRs in improving salt stress and heavy metal tolerance in plants; the prevention and control of plant diseases; boosting soil fertility and agriculture productivity; the induction of secondary metabolite biosynthesis in medicinal and aromatic plants; the enhancement of phytochemical levels, and the action mechanisms, diversity and characterization of PGPRs. The reviews will be of interest for scientists in the fields of agriculture, microbiology, soil biology, plant breeding and herbal medicinal products.

Bacterial Secondary Metabolites: Synthesis and Applications in Agroecosystem presents the structure, properties, and biotechnological applications of bacterial metabolites and their upcoming industrial, pharmaceutical, antimicrobial, and anticancer applications. Chapters cover topics such as the use of lactic acid bacteria as an antifungal and antibacterial agent, bacterial siderophores structure and potential applications, and the role of cyanobacteria metabolites in disease management, among others. Plant and agri-food environmental scientists and researchers, graduate and post-graduate students in related fields will benefit from this reference book which is published as part of the series Nanobiotechnology for Plant Protection. - Explores how research might lead to the production of new bio-based commercial solutions to tackle global agricultural and human diseases - Contains extensive information to understand the intricate processes of cryptic genes and their relationship to the synthesis of bioactive chemicals - Provides in-depth insights into microbial biotechnology, namely secondary metabolites