Phylogenetic analyses and nitrate-reducing activity of fungal cultures isolated from the permanent, oceanic oxygen minimum zone of the Arabian Sea

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dc.contributor.author Manohar, C.S.
dc.contributor.author Menezes, L.D.
dc.contributor.author Ramasamy, K.P.
dc.contributor.author Meena, R.M.
dc.date.accessioned 2015-08-24T09:42:24Z
dc.date.available 2015-08-24T09:42:24Z
dc.date.issued 2015
dc.identifier.citation Canadian Journal of Microbiology, vol.61(3); 2015; 217-226
dc.identifier.uri http://drs.nio.org/drs/handle/2264/4759
dc.description.abstract Reports on the active role of fungi as denitrifiers in terrestrial ecosystems have stimulated an interest in the study of the role of fungi in oxygen-deficient marine systems. In this study, the culturable diversity of fungi was investigated from 4 stations within the permanent, oceanic, oxygen minimum zone of the Arabian Sea. The isolated cultures grouped within the 2 major fungal phyla Ascomycota and Basidiomycota; diversity estimates in the stations sampled indicated that the diversity of the oxygen-depleted environments is less than that of mangrove regions and deep-sea habitats. Phylogenetic analyses of 18S rRNA sequences revealed a few divergent isolates that clustered with environmental sequences previously obtained by others. This is significant, as these isolates represent phylotypes that so far were known only from metagenomic studies and are of phylogenetic importance. Nitrate reduction activity, the first step in the denitrification process, was recorded for isolates under simulated anoxic, deep-sea conditions showing ecological significance of fungi in the oxygen-depleted habitats. This report increases our understanding of fungal diversity in unique, poorly studied habitats and underlines the importance of fungi in the oxygen-depleted environments
dc.language.iso en
dc.publisher NRC Research Press
dc.rights Copyright [2015]. 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.
dc.subject MICROBIOLOGY::General
dc.subject MICROBIOLOGY::Physiology, biochemistry, biophysics
dc.title Phylogenetic analyses and nitrate-reducing activity of fungal cultures isolated from the permanent, oceanic oxygen minimum zone of the Arabian Sea
dc.type Journal Article


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