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Phosphate solubilising Streptomyces spp obtained from the rhizosphere of Ceriops decandra of Corangi mangroves

Indian Agricultural Research Journals

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Title Phosphate solubilising Streptomyces spp obtained from the rhizosphere of Ceriops decandra of Corangi mangroves
 
Creator SUBHASHINI, D V
V, ANIL KUMAR
 
Subject Indole-3-acetic acid, Mangrove, Phosphate-solubilizing microorganisms, Rhizosphere, Streptomyces
 
Description Phosphate-solubilizing potential of Streptomyces spp isolated from the rhizosphere soil of Ceriops decandra (Griffth) Ding Hou mangrove plant was studied using culture media supplemented with insoluble tricalcium phosphate which became transparent after few days of incubation. Fifteen phosphate-solubilizing strains of Streptomyces St-1 to St-15 were isolated from the rhizosphere of mangroves during 2010-11. Phosphate-solubilizing activity of these isolates was evaluated by the formation of halos (clear zones) around the colonies growing on solid medium containing tribasic calcium phosphate as a sole phosphorus source. St-3 was the most active phosphate solubilizing strain among the isolates followed by St-11. Studies on the biomass production of St-3 and St-11 showed an increase in growth at pH 7.2 after 7, 15 and 21 days of incubation at temperature 30°C and 37°C. Culture filtrate of St-3 alone showed the production of IAA. Present study reveals that the production of organic acids by the mangrove rhizosphere microorganisms may be a possible mechanism involved in the solubilization of insoluble calcium phosphate.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2014-05-09
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/40467
 
Source The Indian Journal of Agricultural Sciences; Vol 84, No 5 (2014)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/40467/18129
 
Rights Copyright (c) 2014 The Indian Journal of Agricultural Sciences