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A review on deep-sea fungi: Occurrence, diversity and adaptions

DRS at CSIR-National Institute of Oceanography

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Title A review on deep-sea fungi: Occurrence, diversity and adaptions
 
Creator Raghukumar, C.
Damare, S.
Singh, P.
 
Subject microorganisms
deep-sea fungi
species diversity
Central Indian Ocean Basin
 
Description The few studies on deep-sea fungi in recent years (using either culturing or molecular signatures) have provided evidence on their occurrence. A majority of culture-dependent and culture-independent fungi recovered have homology to terrestrial species, indicating possible arrival in deep-sea either via wind or terrestrial runoffs. However, the presence of novel fungal sequences with less than 97% similarity to previously identified fungal sequences in public databases has also been reported. Several filamentous fungi and yeasts recovered from deep-sea sediments of the Central Indian Basin from approx. 5000 m grew under hydrostatic pressures of 20-40 MPa and 5 degrees C. Some of these fungi had unusual morphology during initial culturing and also when grown at 20 MPa/5 degrees C. Direct detection of fungal hyphae in deep-sea sediments is a daunting task as they are present in low abundance. We demonstrated the occurrence of fungal hyphae in deep-sea sediments by direct staining of the sediments with Calcofluor White, a fluorescent optical brightener. This review presents data on the occurrence, diversity and adaptations of fungi to various deep-sea habitats, with special emphasis on their possible ecological role under these extreme environmental conditions.
 
Date 2010-12-20T11:29:57Z
2010-12-20T11:29:57Z
2010
 
Type Journal Article
 
Identifier Botanica Marina, vol.53(6); 2010; 479-492
http://drs.nio.org/drs/handle/2264/3757
 
Language en
 
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