Bioinoculants as mitigators of multiplestresses: A ray of hope for agriculture in the darkness of climate change
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Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
Heliyon
Abstract
Plant encounters various biotic and abiotic stresses, that affect agricultural productivity and reduce farmer's income
especially under changing global climate. These environmental stresses can advance plant senescence by
inducing osmotic stress, nutrient stress, hormonal imbalance, production of oxygen radicals, and ion toxicity, etc.
Additionally, these stresses are not limited to plant health but also deteriorate soil health by affecting the microbial
diversity of soil. To tackle this global delinquent of agriculture, several methods are suggested to
ameliorate the negative effect of different types of stresses, the application of beneficial microorganisms or
bioinoculants is one of them. Beneficial microorganisms that are used as bioinoculants not only facilitate plant
growth by fulfilling the nutrient requirements but also assist the plant to withstand these stresses. These microorganisms
produce certain chemicals such as 1-aminocyclopropane-1-carboxylate (ACC) deaminase, phytohormones,
antioxidants, extracellular polysaccharide (EPS), siderophores, antibiotics, and volatile organic
compounds (VOCs), etc. which help the plants to mitigate various stresses. Besides, these microbes also activate
plant defence responses. Thus, these bioinoculants can effectively replace chemical inputs to supplement nutrient
requirements and mitigation of multiple stresses in plants.
Description
Keywords
Bioinoculants Abiotic stresses ROS ACC Siderophore Biotic stress