PGPR Amelioration in Sustainable Agriculture : Food Security and Environmental Management

PGPR Amelioration in Sustainable Agriculture: Food Security and Environmental Management explores the growth-promoting rhizobacteria (PGPR) that are indigenous to soil and plant rhizosphere. These microorganisms have significant potential as important tools for sustainable agriculture. PGPR enhance the growth of root systems and often control certain plant pathogens. As PGPR amelioration is a fascinating subject, is multidisciplinary in nature, and concerns scientists involved in plant heath and plant protection, this book is an ideal resource that emphasizes the current trends of, and probable future of, PGPR developments. Chapters incorporate both theoretical and practical aspects and may serve as baseline information for future research. This book will be useful to students, teachers and researchers, both in universities and research institutes, especially working in areas of agricultural microbiology, plant pathology and agronomy. Presents new concepts and current development in PGPR research and evaluates the implications for sustainable productivity Describes the role of multi-omics approaches in establishing an understanding of plant–microbe interactions that help plants optimize abiotic stresses Incorporates both theoretical and practical aspects, and will serve as a baseline for future research Content: Front Cover PGPR Amelioration in Sustainable Agriculture Copyright Page Contents List of Contributors Biography 1. Ecology and Diversity of Plant Growth Promoting Rhizobacteria in Agricultural Landscape 1.1 Introduction 1.2 Microbial Diversity Analysis 1.3 Plant Growth Promoting Rhizobacteria 1.4 Spatio-Temporal Changes and Factor Affecting PGPR Diversity 1.5 Phosphate Solubilization 1.6 Siderophore Production 1.7 Nutrient Exchange 1.8 Microorganisms in Agriculture 1.9 Future Perspective 1.10 Conclusions References 2. Mechanisms of Plant-Microbe Interactions and its Significance for Sustainable Agriculture 2.1 Introduction 2.2 Cataloguing the Plant-Microbe Interaction 2.2.1 A systemic perspective of plant-microbe interaction: Symbiosis verses pathogenesis 2.2.2 Plant-microbe interaction: Biofertilizer 2.2.3 Plant-microbe interactions: Rhizoremediation 2.2.4 Plant-microbe interactions: Biocontrol agent 2.3 Factors Governing Plant-Microbe Interactions 2.4 Applications of Plant-Microbe Interactions 2.5 Conclusion and Future Perspectives References Further Reading 3. Plant Growth Promoting Rhizobacteria: Application in Biofertilizers and Biocontrol of Phytopathogens 3.1 Introduction 3.2 Plant Growth Promoting Bacteria as Biofertilizer 3.3 Mechanism of Action 3.3.1 Phosphate solubilization 3.3.2 Siderophore production 3.3.3 Phytohormones production 3.3.4 Ammonia and hydrogen cyanide production 3.3.5 Enzyme production 3.3.6 Nitrogen fixation 3.4 Microbial Inoculation for the Plant Growth Promotion 3.5 Plant Growth Promoting Bacteria as Biocontol 3.6 Conclusion Acknowledgments References Further Reading 4. PGPR Bioelicitors: Induced Systemic Resistance (ISR) and Proteomic Perspective on Biocontrol 4.1 Introduction 4.2 PGPR as BCAs and their Mode of Actions 4.2.1 Antibiotics 4.2.2 Siderophores 4.2.3 Cell wall degrading enzymes 4.2.4 Volatile organic compounds 4.2.5 Induced systemic resistance 4.3 Proteomic Perspective on Biocontrol 4.4 Conclusion and Future Perspective References Further Reading 5. Amelioration of Salinity Stress by PGPR: ACC Deaminase and ROS Scavenging Enzymes Activity 5.1 Introduction 5.2 Salinity Stress and ROS 5.3 ROS Scavenging in Plants 5.4 Ethylene in Salinity Stress 5.4.1 Regulation of plant stress ethylene levels 5.5 Plant Growth Promoting Rhizobacteria 5.5.1 ACC deaminase-containing bacteria 5.5.2 PGPR and ROS scavenging in salt stress 5.5.3 ACC deaminase containing rhizobacteria in salt stress 5.6 Future Prospective Acknowledgments References Further Reading 6. Role of Plant Growth Promoting Rhizobacteria in Drought Tolerance: Regulating Growth Hormones and Osmolytes 6.1 Introduction 6.2 Drought Adaptations by Plants-Microbe Combination 6.3 Mechanisms Followed by Plants for Drought Tolerance