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Seasonal variations of nitrate reducing and denitrifying bacteria utilizing hexadecane in Mandovi estuary, Goa, West Coast of India

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Title Seasonal variations of nitrate reducing and denitrifying bacteria utilizing hexadecane in Mandovi estuary, Goa, West Coast of India
 
Creator Sousa, Trelita de
Ingole, Baban
Sousa, Simon de
Bhosle, Saroj
 
Subject Bacteria
Tropical
Nutrients
Hydrocorboos
Hexadecane
Estuarine
 
Description 587-592
Mandovi estuary has a prolific population of
heterotrophic bacteria due to the influx of nutrients including nitrate and
organic hydrocarbons. Seasonal sampling at various locations along the estuary
was carried out to isolate nitrate reducing and denitrifying bacteria capable
of hexadecane utilization. Total viable counts of nitrate utilizing bacteria
showed variations with seasonal changes. It ranged from 103-106
cfu/mL on nitrate reduction medium and 101-105
cfu/ml on minimal media containing hexadecane as the sole carbon source.
Highest bacterial counts were obtained during the monsoons. 22% of bacteria
capable of hexadecane utilization were nitrate reducing and 12% were
denitrifying. 29% of the hexadecane utilizing cultures isolated during the
monsoons exhibited nitrate reducing activity. However, seasonal variations did
not affect the frequency of the denitrifying hexadecane utilizers.
 
Date 2013-12-13T12:13:59Z
2013-12-13T12:13:59Z
2013-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/24780
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.42(5) [September 2013]