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

DRS at CSIR-National Institute of Oceanography

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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, T.D.
Ingole, B.
Sousa, S.D.
Bhosle, S.
 
Subject bacteria
tropical environment
nutrients (mineral)
heterotrophic organisms
 
Description 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 2014-09-19T09:59:44Z
2014-09-19T09:59:44Z
2013
 
Type Journal Article
 
Identifier Indian Journal of Geo-Marine Sciences, vol.42(5); 2013; 587-592
http://drs.nio.org/drs/handle/2264/4614
 
Language en
 
Rights © IJMS/NISCAIR 2010. CC Attribution 3.0 License
 
Publisher CSIR-NISCAIR