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Increasing evidence for the important role of Labyrinthulomycetes in marine ecosystems

DRS at CSIR-National Institute of Oceanography

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Title Increasing evidence for the important role of Labyrinthulomycetes in marine ecosystems
 
Creator Raghukumar, S.
Damare, V.S.
 
Subject Labyrinthulomycetes
remineralizers
marine ecosystems
biodiversity
 
Description This review summarizes increasing evidence for the role of Labyrinthulomycetes in marine ecosystems gathered over the last six decades. It focuses on their diversity, habitats, biomass, productivity and overall role in food webs and remineralization. Earlier studies contributed enormously to the cultured diversity of Labyrinthulomycetes. In recent years, their uncultured diversity has been demonstrated in exotic environments like the deep sea and anoxic waters. These findings emphasize the need for novel culture methods to grow these organisms. Many species seem to be substrate-specific in their occurrence. Their commensalistic or mutualistic occurrence in marine invertebrates deserves attention. The biomass of Labyrinthulomycetes in the water column may often match or even exceed that of bacteria, although such occurrences seem to be seasonal. There is a major knowledge gap on their productivity and turnover in the water column. The high biomass and production of several degradative enzymes indicate their importance as remineralizers in the ocean. However, the mechanisms by which they overcome bacterial competition are not clear. It is likely that they occupy special habitats, such as marine aggregates. One role of the Labyrinthulomycetes suggested in this review, based on preliminary experiments, is that of ?left-over scavenging?, following bacterial growth
 
Date 2011-03-09T10:55:08Z
2011-03-09T10:55:08Z
2011
 
Type Journal Article
 
Identifier Botanica Marina, vol.54(1); 2011; 3-11
http://drs.nio.org/drs/handle/2264/3804
 
Language en
 
Rights An edited version of this paper was published by Walter de Gruyter. This paper is for R & D purpose and Copyright [2011] 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