Vol. 5, Issue 6 (2020)
Studies on drought tolerate mediated plant growth-promotion by the application of actinobacteria isolated from marine sources
Author(s): Ayyanar P, Manoharan N
Abstract: The use of plant growth-promoting (PGAB) action bacteria for improving and mange drought condition this study aimed to evaluate the effectiveness of salt loving actinobacteria isolated from Cochin port kerala. Actinomycetes from marine sediments isolated by conventional method and totally 16 strains fall in five different genera were selected. All the strain subjected to plant growth attribution. actinomycetes isolates tested for production of plant growth promoting (PGP) traits like IAA, Hydrogen cyanide and phosphate solubilization. About 25-36% of strains only positive on plant growth promotion characters. Studies shows three Streptomyces sp isolated from sample sites respectively 1, 3, 7, two Micromonospora recovered from site 2 and 3 as well as one Nocardia sp from sample 3 were found to have plant growth stimulant activity. Further growth effect under drought of V. mungo shows effectively balanced growth among Streptomyces sp with 70-80% seed germination and significant increases in the growth parameters with high vigor index. Results conclude that these isolates capable of being developed into bio-inoculants for drought management.