Plant-growth-promoting rhizobacteria: drought stress alleviators to ameliorate crop production in drylands

Kaushal, M and Wani, S P (2016) Plant-growth-promoting rhizobacteria: drought stress alleviators to ameliorate crop production in drylands. Annals of Microbiology, 66 (1). pp. 35-42. ISSN 1590-4261

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Abstract

Drylands are known for being a drought stressed environment, which is an alarming constraint to crop productivity. To rescue plant growth in such stressful conditions, plant-growth-promoting rhizobacteria (PGPR) are a bulwark against drought stress and imperilled sustainability of agriculture in drylands. PGPR mitigates the impact of drought stress on plants through a process called rhizobacterial-induced drought endurance and resilience (RIDER), which includes physiological and biochemical changes. Various RIDER mechanisms include modification in phytohormonal levels, antioxidant defense, bacterial exopolysaccharides (EPS), and those associated with metabolic adjustments encompass accumulation of several compatible organic solutes like sugars, amino acids and polyamines. Production of heat-shock proteins (HSPs), dehydrins and volatile organic compounds (VOCs) also plays significant role in the acquisition of drought tolerance. Selection, screening and application of drought-stress-tolerant PGPRs to crops can help to overcome productivity limits in drylands.

Item Type:	Article
Divisions:	Research Program : Asia
CRP:	CGIAR Research Program on Dryland Systems
Uncontrolled Keywords:	Drought stress; PGPR; LapA; EPS; VOCs; RIDER; Drylands
Subjects:	Others > Agriculture Others > Drylands
Depositing User:	Mr Ramesh K
Date Deposited:	22 Jun 2015 04:51
Last Modified:	13 Mar 2017 03:45
URI:	http://oar.icrisat.org/id/eprint/8801
Official URL:	http://dx.doi.org/10.1007/s13213-015-1112-3
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	Financial help provided by ICRISAT is highly acknowledged.
Links:	Google Scholar

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