Plant growth promoting Curtobacterium albidum strain SRV4: An agriculturally important microbe to alleviate salinity stress in paddy plants

By S. Vimal, V. K. Patel, J. S. Singh. Ecological Indicators, 2019

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Abstract Present study examined the inoculation of halo-tolerant plant-growth-promoting-rhizobacteria (PGPR) on paddy plant growth parameters and physiology under different salinity (0, 100, 200 and 300 mM) conditions. Twenty-nine promising halo-tolerant PGPRs were isolated and screened for their PGP traits from the rhizosphere of naturally growing plants of saline soils located at Sandila region of Hardoi, Uttar Pradesh, India. Out of 29 isolates, one most efficient salt-tolerant isolate having potential PGP attributes, was selected for further study. Based on 16S rRNA gene sequencing and BLASTn analysis, the isolate was identified as Curtobacterium albidum SRV4 strain. The SRV4 expressed positive attribute for nitrogen (N2) fixation, exopolysaccharide production (EPS), hydrogen cyanide (HCN), Indole-3-acetic acid (IAA), and 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity. The higher doses of NaCl negatively affected paddy plant physiology and growth parameters. Paddy plants treated with SRV4 showed significant differences (P

Subfields: Ecology, Molecular Biology, Plant Science

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