期刊
FRONTIERS IN MICROBIOLOGY
卷 12, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fmicb.2021.743512
关键词
microbiome; climate change; food security; plant-microbiome interaction; phytobiome; AMF; PGPR; Arabidopsis
类别
资金
- USDA National Institute of Food and Agriculture [1024881]
- Estonian Ministry of Education and Research [PRG1065]
- European Union through the European Regional Development Fund (Centre of Excellence EcolChange)
Plant-associated microorganisms can enhance plant resistance to drought through various mechanisms, including osmotic adjustment, antioxidant enzyme enhancement, and modification in phytohormonal levels. Microbial volatile organic compounds and induction of stress-responsive genes also play crucial roles in acquiring drought tolerance.
Drought stress is an alarming constraint to plant growth, development, and productivity worldwide. However, plant-associated bacteria, fungi, and viruses can enhance stress resistance and cope with the negative impacts of drought through the induction of various mechanisms, which involve plant biochemical and physiological changes. These mechanisms include osmotic adjustment, antioxidant enzyme enhancement, modification in phytohormonal levels, biofilm production, increased water and nutrient uptake as well as increased gas exchange and water use efficiency. Production of microbial volatile organic compounds (mVOCs) and induction of stress-responsive genes by microbes also play a crucial role in the acquisition of drought tolerance. This review offers a unique exploration of the role of plant-associated microorganisms-plant growth promoting rhizobacteria and mycorrhizae, viruses, and their interactions-in the plant microbiome (or phytobiome) as a whole and their modes of action that mitigate plant drought stress.
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