Bacilli And Agrobiotechnology

The third volume of the series ‘Bacilli and Agrobiotechnology’ is comprised of 25 chapters that bring a unique perspective to the readers about Bacillus-mediated biotic and abiotic plant stress tolerance, bioremediation and bioprospecting. These chapters are prepared by the leading scientists of global repute. The negative impacts of agrochemicals such as chemical fertilizers and pesticides on human health and environment are paramount. Bacillus and allied genera of beneficial plant-associated microbes are presenting beacon of hope to the farmers, plant scientists and stewards of environment. Several chapters of this volume focus on the induction of various signaling pathways in plants by Bacillus spp. to alleviate biotic and abiotic stresses impacted by global climate change Agricultural lands contaminated with heavy metals affect the ecological food chain starting from crop cultivation. How the toxic effects of trace metals originating from industrial effluents and agrochemicals can be remediated? This book addresses how to overcome these issues by applying elite strains of Bacillus. Bioprospecting is a systematic and organized search for conversion of bioresources to industrially important products by utilizing microbe-derived metabolites. This volume is enriched by including the bioprospecting aspects mediated by Bacillus spp. with novel insights.

The Gram-positive and spore-forming Bacilli are the most dominant group of bacteria that exist in various ecological niches on the earth. They represent one of the most important unmapped pools of biodiversity with immense potential of applications in agriculture, environment, and industry. As these bacteria are highly tolerant to stressful environment and enhance plant tolerance to harsh environment such as salinity, drought, and heavy metal toxicity, plant-associated Bacilli have high potential for promoting sustainable crop production. Many species of Bacilli are being commercially used as phytostimulator and biofertilizer. Some of them are applied as biopesticide for protecting crop plants from phytopathogens and insect pests. The Bacillus-based products are becoming popular in ecologically sound and climate resilient agricultural production system. In fact, Bacillus and allied species based formulations are already dominating the biopesticides market, although, to compete with other formulations and chemical alternatives, the biology of Bacillus had to be understood from perspective of such applications. Our understanding of the biology and molecular-basis of the beneficial effects of plant-associated Bacilli has greatly been progressed in recent years through genomics, metagenomics, post-genomics and metabolomics studies. The volume two of the series Bacilli and Agrobiotechnology comprehensively reviews and updates current knowledge of Bacilli as phytostimulant and biological control of plant pests. Better understanding the biology, ecology and mechanism of action of the beneficial strains of Bacilli will play a role in the development of products to support green biotechnology in agriculture and industries.

This volume of comprehensive reviews updates our knowledge of research and commercialization of Bacillus-based products in agriculture and the environmental sector. The last couple of decades have witnessed tremendous growth of research on Bacillus species. Many of these species can produce industrial enzymes, and can act simultaneously as biofertilizers and as biopesticides inhibiting important phytopathogens. This "biocontrol" activity is now elucidated by a number of genomic and metabolomic studies. Bacillus formulations are being patented and commercialized on a regular basis. Understanding the biology, ecology and mechanism of action of these bacteria will play a role in the promotion of Bacillus-based products to support green technology in agriculture and agro-based industries.

This edited volume provides a comprehensive view of the recent developments on Bacillus and their application in agriculture and allied sectors in a global scenario. Research articles sharing a consolidated state-of-the-art development in this area are solicited for this book. This book is a complete package covering all spheres of diversity and taxonomy, nutrient supplementation, biotic and abiotic stress management, biofilm and endophytic colonization, commercialization and regulatory mechanisms, etc. Descriptions of cutting-edge techniques and novel approaches on Bacillus research is also covered. A part of the book concentrates on the biotic and abiotic stress management in several important crops. It contains 11 contributory chapters from eminent experts in the field of life sciences specially microbiology, plant pathology and biotechnology working on different aspects of Bacilli and their application in agriculture and allied sectors. This book is useful for Graduate, Post-graduate students, research scholars, and post doctorate scholars of plant science, plant microbiology, soil microbiology and plant pathology discipline researchers, academicians, industrialists, policy makers.

The use of biocontrol agents and beneficial organisms for management of plant and pest diseases appears as an environment-friendly and economic procedure. However, this option is not always available, depending on the lack of knowledge on the mechanisms of natural regulation, locally effective. In this view, this eBook considers studies and experimental works illustrating a range of problems and solutions based on microbial resources, suitable for management of biotic stress factors. These examples show how detailed data and knowledge on the organisms involved are of paramount importance to achieve a sustainable and durable management capability.

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.

Agricultural biostimulants are a group of substances or microorganisms, based on natural resources, that are applied to plants or soils to improve nutrient uptake and plant growth, and provide better tolerance to various stresses. Their function is to stimulate the natural processes of plants, or to enrich the soil microbiome to improve plant growth, nutrition, abiotic and/or biotic stress tolerance, yield and quality of crop plants. Interest in plant biostimulants has been on the rise over the past 10 years, driven by the growing interest of researchers and farmers in environmentally-friendly tools for improved crop performance. Improved crop production technologies are urgently needed to meet the growing demand for food for the ever-increasing global population by addressing the impacts of changing climate on agriculture. This book is of interest to researchers in agriculture, agronomy, crop and plant science, soil science and environmental science.

Antifungal Metabolites of Rhizobacteria for Sustainable Agriculture focuses on plant health in agro-ecosystems of various economically important cash and food crops with a concern to promote sustainable agriculture. They have emerged as a key organic tool for enhancing yields. In a natural environment the interactions between plants and phytopathogenic fungi are complex and survival requires a development of resistance to plant diseases. Diversity of Plant Growth Promoting Rhizobacteria (PGPR) diversity depends on the nature of root exudates and soil conditions that affect their interaction with host plants. Novel strategies, such as, applying bioactive natural products against the pathogenic fungus are required to control disease sustainably. Various classes of secondary metabolites including lipopeptides, macrolides, alkaloids, terpenoids and phenolics from microorganisms and plants strongly suppress fungal growth and can also be effective in controlling plant diseases both in vitro and in vivo. The modes of actions of some potential antifungal secondary metabolites against pathogenic fungus are also discussed. Eco-friendly fungal species and their metabolites are excellent agents used for regulating various fungal and bacterial phytopathogens and may have tremendous potential for other applications, and play a key role in enhancing plant tolerance to stress. Antifungal Metabolites of Rhizobacteria for Sustainable Agriculture also covers bovine-based formulations used for sustainable production and nutritional security through horticultural crops, thereby addressing the problems associated with malnutrition and under-nutrition encountered by small and marginal farmers, as well as by families facing resource constraints. These techniques can also improve breathable air, drinkable water, and consumable foods. This book addresses the need to mitigate the health problems of people via organic crop production and to improve the socio-economic status of farmers (especially in developing countries), and to revitalize agricultural sustainability.