Record Details

Response of sedimentary nucleic acids to benthic disturbance in the Central Indian Basin

DRS at CSIR-National Institute of Oceanography

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Title Response of sedimentary nucleic acids to benthic disturbance in the Central Indian Basin
 
Creator Fernandes, C.E.G.
DeSouza, M.J.B.D.
Nair, S.
LokaBharathi, P.A.
 
Subject DNA
RNA
nucleic acid
benthic environment
ecosystem disturbance
sediments
metabolism
 
Description Information on the response of nucleic acids (i.e., DNA and RNA) to simulated benthic disturbance was obtained from samples collected from eight sediment cores (0-10 cm) located in the Central Indian Basin (CIB). In general the total sedimentary DNA (DNA) increased with depth (from 380.09 to 408.99 mu g g sup(-1)), while total sedimentary RNA (RNA) decreased (from 878.13 to 484.16 mu g g sup(-1)). Following the simulated benthic disturbance brought about by the benthic hydraulic disturber, DNA decreased by 10% along the disturbed track while the RNA increased by around 75%. The RNA=DNA ratio decreased nearly 10%. However, the ratio doubled along the disturbed track suggesting that the activity was stimulated at molecular level following artificial disturbance. The nucleic acid ratio thus shows that the CIB sediments are metabolically active, and with disturbance the activity tends to increase further.
 
Date 2008-02-22T04:26:32Z
2008-02-22T04:26:32Z
2005
 
Type Journal Article
 
Identifier Marine georesources and geotechnology, Vol.23; 289-297p.
http://drs.nio.org/drs/handle/2264/866
 
Language en
 
Rights Copyright [2005]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
 
Publisher Taylor and Francis