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Diversity of sulfur oxidiizing bacteria in greenwater system of coastal aquaculture.

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Title Diversity of sulfur oxidiizing bacteria in greenwater system of coastal aquaculture.
Not Available
 
Creator K.K. Krishnani
V.Kathiravan
M. Natrajan
M. Kailasam
S.M.Pillai
 
Subject Diversity
Sulfur-oxidizing bacteria
soxB gene
16S rRNA
Greenwater
Coastal aquaculture
 
Description Not Available
Reduced sulfur compounds produced by the metabolism are the one of the major
problems in aquaculture. In the present study, herbivorous fishes have been cultured as
biomanipulators for secretions of slime, which enhanced the production of greenwater
containing beneficial bacteria. The genes encoding soxB which is largely unique to sulfur oxidizing bacteria (SOB) due to its hydrolytic function has been targeted for examining the
diversity of SOB in the green water system of coastal aquaculture. Novel sequences
obtained based on the sequencing of metagenomic clone libraries for soxB genes revealed
the abundance of SOB in green water system. Phylogenetic tree constructed from aligned
amino acid sequences demonstrated that different clusters have only 82–93% match with
Roseobacter sp., Phaeobacter sp., Roseovarius sp., Sulfitobacter sp., Ruegeria sp., and
Oceanibulbus sp. The level of conservation of the soxB amino acid sequences ranged from
42% to 71%. 16S rRNA gene analyses of enrichment culture from green water system
revealed the presence of Pseudoxanthomonas sp., which has 97% similarity with
nutritionally fastidious Indian strain of Pseudoxanthomonas mexicana—a sulfur chemo lithotrophic γ-proteobacterium. Our results illustrate the relevance of SOB in the
functioning of the green water system of coastal shrimp aquaculture for oxidation of
reduced sulfur compounds, which in turn maintain the sulfide concentration well within the
prescribed safe levels.
Not Available
 
Date 2023-07-31T08:55:50Z
2023-07-31T08:55:50Z
2010-01-13
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80361
 
Language English
 
Relation Not Available;
 
Publisher Not Available