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Nitrate reduction by fungi in marine oxygen-depleted laboratory microcosms

DRS at CSIR-National Institute of Oceanography

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Title Nitrate reduction by fungi in marine oxygen-depleted laboratory microcosms
 
Creator Manohar, C.S.
Raghukumar, C.
 
Subject denitrification
oxygen depletion
 
Description Fungi are major contributors to the process of denitrification in terrestrial environments, but their role as denitrifiers in the ocean has not been addressed thus far. The nitrate reducing capacity of fungi based on respiratory electron transport system (ETS) activity is measured and nitrite accumulation in oxygen-depleted laboratory microcosms. Specific fungal and bacterial activities in these microcosms were studied by fortifying the sediments with antibiotics and anti-fungal compounds, respectively. The higher ETS activity in the microcosm with antibiotics indicated higher fungal than bacterial activity. Activity of two fungi, (hash) An-2 (MTCC accession number 9376) and (hash) MT-811 (JMC accession number 11502) in pure cultures under aerobic and anaerobic conditions, and in the microcosms was also studied. ETS activity in the fungal cultures grown under anaerobic conditions was half the activity measured under aerobic growth conditions. Simulated laboratory microcosm data show that fungi participate in denitrification activity in sediments from marine hypoxic environments
 
Date 2010-10-21T09:54:25Z
2010-10-21T09:54:25Z
2010
 
Type Journal Article
 
Identifier Botanica Marina, vol.53(5); 469-474
no
http://drs.nio.org/drs/handle/2264/3730
 
Language en
 
Relation Bot_Mar_53_469.jpg
 
Rights An edited version of this paper was published by Walter de Gruyter. Copyright [2010] Walter de Gruyter. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Walter de Gruyter