ISSN: 0973-7510

E-ISSN: 2581-690X

Disheeta L. Akbari , B.A. Golakiya and Roshani A. Bhadania
1Department of Biotechnology, Junagadh Agriculture University, Junagadh – 362 001, Gujarat, India.
J Pure Appl Microbiol. 2015;9(3):2619-2626
© The Author(s). 2015
Received: 25/05/2015 | Accepted: 03/07/2015 | Published: 30/09/2015
Abstract

A total 26 unique bacterial endophytic strains were isolated from roots, stems and leaves of  Dactyloctenium sindicum, Cenchrus biflorus and Chloris barbata  plants and eleven isolates were screened as a drought tolerant endophytic bacteria. The CEB 9 and CEB 76 drought tolerant isolates were positive for phosphate solubilisation, seven endophytic isolates were positive to siderophore and eight isolates were positive to ACC deaminase activity. The CEB 76 isolate produced 47.96 µgml-1 Indole acetic acid at 30%  PEG 6000 concentration. While the CEB 9 isolate produced 154.68 µgml-1 of exopolysaccharide at 30% PEG6000. The CEB 12, CEB 15 and CEB 75 isolates were successfully inhibited growth of Alternaria triticina and Helminthosporium sativum. The CEB 76 isolate only inhibited growth of Helminthosporium sativum. This study evaluates the drought tolerant capacity of endophytic bacteria, plant growth promoting activity and biocontrol mechanism of drought tolerant bacteria.

Keywords

Drought tolerant endophytic bacteria, PGPR, Antagonistic potential

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