Beneficial Microbes for Sustainable Agriculture under Stress Conditions

Beneficial Microbes for Sustainable Agriculture under Abiotic Stress: Functional Traits and Regulation highlights the potential for microbe-mediated stress phytotolerance to be improved by presenting multiple scenarios of application and results.

In most research and studies, abiotic stress is applied singularly to specific plants inoculated with a bioinoculum or a microbial consortium to isolate specific plant-microbe responses. However, in reality, plants are continually exposed to a multitude of different stresses simultaneously occurring. This book presents microbial functional traits and microbe-mediated plant responses under both specific or combined stress conditions. Collectively, it provides insights into microbial functional traits and microbe-mediated plant responses in a wide range of conditions, providing foundational understanding of their potential benefits, and inspiring further research.

The book also centers on specific microbial strains and groups which have been shown to effectively promote stress tolerance, and which could be utilized to boost agricultural production under stress conditions. Their potential utilization in stress affected lands not just improves crop production but could also be in line with sustainable agriculture.

With the advancement of tools such as omics related technologies, emerging information on microbial functional traits and regulations on microbe-mediated phytotolerance will also allow us to develop relevant biotechnologies harnessing potentials of plant-microbe interactions under stress conditions. The information in this volume will be of interest to those working toward these next steps.

Cover image
Title page
Table of Contents
Copyright
Contributors
About the editor
Preface
Chapter 1. Plant–microbe interactions for enhanced plant tolerance to stress
1. Introduction
2. Plant–microbe interactions under challenging conditions
3. Single inoculation versus SynComs (microbe-based and microbiome-based)
4. Single stress versus combinatorial stress: With compounding effects of global warming, climate change, pollutants, and soil degradation
5. Omics toward understanding functional traits and regulation under normal and stress conditions
6. Conclusion and generalization
Chapter 2. Harnessing the functional mechanism of plant–microbiome interaction for abiotic stress management
1. Introduction
2. Impact of abiotic stress on plant growth
3. Plant–microbe interaction
4. Microbe–microbe interaction in soil
5. Functional mechanism of plant–microbe interaction in abiotic stress management
6. Future prospects
7. Conclusion
Chapter 3. Bacterial endophytes as bioinoculants: Establishment of intimate and multifunctional plant–endophyte interactions under nonstress and salt stress conditions
1. Introduction
2. The ubiquity of bacterial endophytes in association with plants
3. Benefits of endophytic colonization and bacterial endophyte–plant associations: Toward plant growth promotion
4. Modes of entry and dispersion
5. Bacterial competence: Mechanisms of colonization and endophytic lifestyle
6. Methylobacterium oryzae CBMB20 as a model of bacterial endophyte–plant association: Proteomics and metabolomics mechanisms of plant growth under nonstress and stress conditions
7. Determinants of the endophytic microbial assembly toward engineering plant endophytic microbiome
8. Bacterial endophytes as bioinoculants
9. Future prospects
Chapter 4. Prospects of plant growth–promoting bacteria against aggravated change in global climate
1. Introduction
2. Temperature
3. Precipitation
4. Ultraviolet radiation
5. Pathogen
6. Conclusions and future perspectives
Chapter 5. The potential of soil microbiomes in alleviating climate change–associated stresses on crop plants
1. Introduction
2. Climatic stressors and soil microbial response
3. Enhancing plant resilience against climatic stresses and restoring soil health by soil microbiome engineering
4. Understanding plant–soil–microbiome interactions under climate change conditions using omics approaches
5. Conclusions and future prospects
Chapter 6. Methylotrophs—A new dimension of functional plant probiotics for sustainable agriculture
1. Introduction
2. Diversity of PPFM
3. Abundance of PPFM
4. Metabolism of carbon source utilization
5. Plant growth mechanisms of PPFM
6. Field studies and success stories
7. Conclusions
Chapter 7. Microbial synbiotics for sustainable nutrient stress management
1. Introduction
2. Plant-beneficial rhizobacteria
3. Prebiotics, probiotics, and synbiotics for plant growth
4. Synthetic microbial community for plant improvement
5. Relationship between nutrients and microbial community
6. Considerations for efficient use of microbial synbiotics in the fields
7. Conclusion
Chapter 8. Roles of phosphate-solubilizing microorganisms in soil–plant system: From phosphorus deficiency to oversupply
1. Phosphorus in soil system
2. Mechanisms of phosphate solubilization
3. Factors influencing the phosphate-solubilizing activity
4. Phosphate-solubilizing microorganisms in sustainable agriculture
5. Biogeochemical cycling of phosphorus in the future
Chapter 9. Bioinoculant-assisted host salt tolerance
1. Introduction
2. Plant growth–promoting bacteria used in the study of bioinoculant-mediated salt tolerance
3. Competence of bioinoculant under stress conditions: PGP activity, survivability, and colonization
4. Mechanism of salt-stress alleviation by bacteria
5. Microbiome-assisted salt tolerance of host plant
6. Conclusion
Chapter 10. The role of the bacterial mVOCs in sustainable plant growth
1. Introduction
2. An overview on mVOCs
3. Methods used for isolation of mVOCs-producing bacteria
4. Importance of mVOCs in plants' health and adaptation to the environment
5. Mechanisms underlying the plant growth–promoting capability of mVOCs
6. Applications and limitations of the use of mVOCs-producing bacteria in sustainable agriculture
7. Future perspectives
8. Conclusions
Chapter 11. Application of microorganisms for cross-protection against biotic and metal-induced oxidative stresses in plants
1. Roles of reactive oxygen species in stress responses
2. Mechanisms involved in metal-induced oxidative stress in plants
3. ROS and antioxidants in biotic and abiotic stress response cross-talk
4. ROS management by beneficial microbes for crop protection from oxidative stress
5. Conclusion
Chapter 12. Combating heavy metal related stress response in plants through selective plant growth promoting mechanisms of metal-resistant bacteria
1. Introduction
2. Heavy metal stress in plants
3. Bacterial key heavy metal resistance mechanisms
4. Selective plant growth–Promoting mechanisms of metal-resistant bacteria aiding plant survival under heavy metal stress
Chapter 13. Strategies of cold-adapted PGPB to elicit cold-stress acclimatory responses in plants
1. Introduction
2. Sensing and initial cold response in plants
3. Mechanisms of cold-stress resistance in plants
4. Plant growth–promoting bacteria-mediated cold tolerance in plants
5. Strategies used by the microorganisms to help plants overcome stress
6. Conclusions
Chapter 14. Microbe-mediated amelioration of cold stress in plants: Mechanisms and challenges
1. Introduction
2. Impact of cold stress on crop growth and yield
3. Diversity of psychrotrophs that promote plant growth and health
4. Mechanisms employed by psychrotrophs in promoting plant growth and health
5. Microbe-mediated management of cold stress in crops
6. Major constraints and future outlook
7. Conclusions
Chapter 15. Azospirillum-based aggregated cells as inoculant delivery for sustaining plant growth under challenging conditions
1. Introduction
2. Taxonomy of the genus Azospirillum
3. Diazotrophic rhizobiocoenosis of Azospirillum
4. Establishment of Azospirillum on plant roots and rhizosphere
5. Inoculant formulation: Optimal characteristics of a carrier
6. Physiological adaptations in Azospirilla for survival and the concept of flocculation
7. Conclusions
Chapter 16. Conserving soil microbial population and sustainable agricultural practices—Polymers in aid of safe delivery, protection, population enhancement, and maintenance
1. Introduction
2. Biopolymers in agriculture
3. Mode of application and mechanism of action
4. Limitations and challenges
5. Conclusion
Chapter 17. Methodological and interpretational problems in plant growth-promoting bacteria inoculation studies
1. Introduction
2. Methodological mistakes found in the literature
3. Importance of disclosing the exact composition and proper design of effective PGPB consortia
4. Monitoring the successful root colonization and persistence of inoculated bacteria
5. Conclusion
Chapter 18. Unveiling the dynamics of crop growth: Chemical versus biofertilizers in the context of internal and external factors
1. Introduction
2. Internal factors affecting crop production
3. External factors affecting crop production
4. Chemical fertilizers and biofertilizers
5. Relation between internal and external factors affecting crop production
6. Conclusion
Chapter 19. Understanding the changes and roles of rhizosphere microbial communities under plant stress
1. Introduction
2. The change of microbial community under biotic stress
3. Change of microbial community under abiotic stress
4. The role of microbial community in plant rhizosphere soil
5. The root (rhizosphere)—shoot axis in plant
6. Conclusion
Chapter 20. Sulfur-oxidizing bacteria: A potential inoculant for plant nutrition and abiotic stress mitigator in calcareous soil
1. Introduction
2. Sulfur status in soil
3. Physiological role of sulfur in plants
4. Sulfur deficiency and deficiency symptoms in plants
5. Calcareous soils and abiotic stress
6. Sulfur-oxidizing bacteria
7. The significance of sulfur-oxidizing bacteria and S transformation in calcareous soil
8. Effect of sulfur-oxidizing bacteria on nutrient content and uptake
9. Impact of sulfur on the improved physiological traits of crops under drought stress
10. Conclusion
Chapter 21. Sustainable release of phosphorus under heavy metal stresses: From microbiology to productivity
1. Introduction
2. Soil phosphorus
3. Heavy metal toxicity resistance and remediation
4. Production of phosphate-solubilizing microorganisms
5. Conclusion
Chapter 22. Microbe-mediated UV stress tolerance in terrestrial plants
1. Introduction
2. Effect of UV light on plant growth and development
3. Negative effects of UV radiation (UVR) on plants
4. Tolerance mechanisms of plants against UV radiation (UVR)
5. Effects of UV on microorganisms with emphasis on phyllosphere and surface microorganisms
6. Microbial adaptations to UV stress
7. Adaptation of methylotrophs to UV stress
8. Microbe-mediated plant tolerance to UV stress
Chapter 23. Plant growth–promoting fungi in plants: Insights from stress tolerance mechanism
1. Introduction
2. Plant stress responses
3. Plant–PGPF interactions: Mechanisms and beneficial traits
4. Mechanisms of microbe-mediated abiotic stress
5. Molecular basis of PGPF-mediated stress tolerance
6. Ecological implications of PGPF application in agriculture
7. PGPF in sustainable crop production
8. Challenges and future perspectives
9. Conclusion
Index

Life Sciences

Physical Sciences & Engineering

Social Sciences & Humanities

Health

Beneficial Microbes for Sustainable Agriculture under Stress Conditions

Functional Traits and Regulation

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