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Soil Bacillus as Biocontrol Agent: Prospects and Applications

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Advances in Agricultural and Industrial Microbiology

Abstract

Soil, amongst the natural resources is of superlative important, nurturing innumerable microbes essential for maintaining soil fertility, crop protection vis-à-vis crop productivity. Productivity of crop mostly decreases due to disease caused by wide range of phytopathogens. The use of bioantagonist as biocontrol agents has been of utmost importance to combat phytopathogens instead of agrochemicals/pesticides. Biocontrol of crop phytopathogens comprehended curtailment in pathogenic inoculum concentration or restricted infectivity. Using few bacteria is an alternative option against rice phytopathogens as well as agrochemicals for an affirmative socio-ecological impact. Species of soil Bacillus sp. offers advantages over others in biocontrol of rice pathogens via production of array of broad-spectrum antibiotics and resistant endospores. Advancement in molecular biology revealed the molecular pathways and mechanisms involved in antagonism of Bacillus sp. aiding disease reduction, remediation, improvement and wider use of biocontrol agents. The pathway of biocontrol prospective involves parasitism, competition for nutrients and space, antibiosis, induced disease resistance and other cellular interactions. In the present chapter an attempt has been made to implement Bacillus sp. as a biocontrol agent to combat rice bacterial pathogens including its in depth physiology, mode of action, genetics, limitations and enhanced applications for disease management.

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Nayak, S., Nayak, S.K., Baliyarsingh, B., Pahari, A., Dash, D., Mishra, B.B. (2022). Soil Bacillus as Biocontrol Agent: Prospects and Applications. In: Nayak, S.K., Baliyarsingh, B., Mannazzu, I., Singh, A., Mishra, B.B. (eds) Advances in Agricultural and Industrial Microbiology. Springer, Singapore. https://doi.org/10.1007/978-981-16-8918-5_4

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