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Occurrence of Phosphate-Solubilizing Bacteria in Rhizospheric and Pneumatophoric Sediment of Avicennia marina

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Title Occurrence of Phosphate-Solubilizing Bacteria in
Rhizospheric and Pneumatophoric Sediment of
Avicennia marina
Not Available
 
Creator Vennila,A
Purushothaman,C S
Abhijith,Ramya
 
Subject Phosphorus, Phosphate-solubilizing bacteria, acid phosphatase activity, Avicennia marina
 
Description Not Available
The present study deals with the isolation and characterization of phosphorus-solubilizing bacteria (PSB)
from Avicennia marina rhizospheric sediment, pneumatophoric sediment and non-rhizospheric sediment.
The sampling was carried out in four mangrove forests of Mumbai, India. The physicochemical
parameters like pH, electrical conductivity, organic carbon, texture, total Phosphorus (P), inorganic P,
organic P, Olsen P, iron, calcium, magnesium and zinc in sediment were analysed along with the
isolation and molecular characterization of PSB. Significantly, lower pH was observed in the
rhizospheric sediment than in the pneumatophoric and bulk sediment. Abundance of PSB was also found
in the rhizospheric zone. This was supported by other physicochemical parameters such as high organic
P, Olsen P, and higher bacterial count along with low inorganic P. In this study, 8 PSB were isolated and
16S rDNA sequence revealed that all the isolates belong to the genus Bacillus. Among the PSB isolates,
B. subtilis sub. spizizenii TU-B-10 showed significantly higher solubilization activity (85.8±0.0 µg P
released per 108
cfu in 72 hrs). The isolates that showed higher phosphate-solubilizing potentials can be
explored as phosphatic bio-fertilizer to enhance the agricultural, aquacultural and mangrove productivity.
Not Available
 
Date 2021-09-17T08:59:39Z
2021-09-17T08:59:39Z
2017
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/63942
 
Language English
 
Relation Not Available
 
Publisher Not Available