Phosphate solubilizing actinomycetes in the estuarine environment: an inventory.
J Environ Biol
;
2007 Oct; 28(4): 795-8
Article
in English
| IMSEAR
| ID: sea-113584
ABSTRACT
Sediment samples were collected from different stations of the Vellar estuary for isolation of total actinomycetes and phosphate solubilizing actinomycetes. Phosphatase activity in the sediments was also investigated Consistently a higher number of actinomycetes, phosphate solubilizing actinomycetes and phosphatase activity were recorded from the clay sediments than the sandy sediments at all the stations. In all, 7 strains showed positive phosphatase activity. Among them, one strain PS-3 exhibited good activity and was further investigated for optimum phosphorus solubilization at different pH (6, 6.5, 7, 7.5 and 8) and incubation (1st day to 20th day) periods. The solubilizing activity was maximum at the pH 7 and an incubation period of 13 days was required for an appreciable quantity of phosphorus to be leached into the medium. Based on the chemotaxonomical and conventional methods of identification, the strain PS-3 has been tentatively identified as Streptomyces galbus. The present study indicates that phosphatase enzyme and S. galbus along with other actinomycetes species would play a major role in solubilizing the phosphate in the estuarine ecosystem and increasing the soluble phosphate concentration thereby enhancing the productivity
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Phosphates
/
Solubility
/
Water Microbiology
/
Actinobacteria
/
Hydrogen-Ion Concentration
Language:
English
Journal:
J Environ Biol
Year:
2007
Type:
Article
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