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Amino acid biogeochemistry and bacterial contribution to sediment organic matter along the western margin of the Bay of Bengal

DRS at CSIR-National Institute of Oceanography

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Title Amino acid biogeochemistry and bacterial contribution to sediment organic matter along the western margin of the Bay of Bengal
 
Creator Fernandes, L.
Garg, A.
Borole, D.V.
 
Subject Sediments
Bacteria
Degradation
 
Description Six sediment cores collected from various water depths and sampling locations along the western margin of the Bay of Bengal (BOB) were investigated for the total hydrolysable amino acids (THAA) and d-amino acids (d-AA) to understand their distribution, digenetic alteration and bacterial contribution to organic matter (OM). Irrespective of their location, THAA concentrations and yields generally decreased and mol% glycine increased with increasing water depth indicating that OM was degraded during its transit through the water column. Amino acid based degradation index (DI) indicated that OM of the surface sediments of shallow stations, BOB-1 to BOB-3 was relatively fresher than that of deeper stations, BOB-4, BOB-5 and BOB-6. The concentrations and mol% of the d-AA varied from 0.04 to 0.76 µmol gdw-1 and 0.3 to 8.5 mol%, respectively. Contribution of bacterial peptidoglycan amino acids to THAA (% THAApep/THAA) ranged between 4.0% and 55.0%. Both % THAApep/THAA and mol% d-AAs were significantly (p
 
Date 2014-02-05T09:41:49Z
2014-02-05T09:41:49Z
2014
 
Type Journal Article
 
Identifier Deep-Sea Research I, vol.83; 2014; 81-92
no
http://drs.nio.org/drs/handle/2264/4460
 
Language en
 
Relation Bioorg_Med_Chem_Lett_24_2863.jpg
 
Rights An edited version of this paper was published by Elsevier. Copyright [2013] Elsevier
 
Publisher Elsevier