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A novel proterhodopsin bearing Flavobacterium species from an Antarctic saline lake


Shi, Feng and Powell, S and Bowman, JP, A novel proterhodopsin bearing Flavobacterium species from an Antarctic saline lake, Proceedings of Flavobacterium 2012, 5-7 June 2012, Turku, Finland, pp. 1-8. (2012) [Refereed Conference Paper]

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Numerous Flavobacterium species have been officially described from Antarctic samples, and with recent investigations more will likely be described [1]. All Antarctic Flavobacterium species show some level of cold adaptation and have enhanced osmotolerance relative to other members of Flavobacterium (Fig. 1). The overall pattern of the distribution of cold-adapted species within the Flavobacterium phylogenetic radiation suggests the emergence of cold adaptation has occurred multiple times within different ecosystems, however most species cluster together suggesting ecophysiological specialisation amongst related Flavobacterium species. Within the largest of these cold-adapted clades (Fig. 2) resides one so far undescribed strain, designated ACAM 123, most closely related to the species F. degerlachei and F. frigoris. ACAM 123 likely represents a novel species, based on accumulated data [2]. ACAM 123 is both salt-requiring and psychrophilic (tolerates up to 6% NaCl, optimal temperature for growth ~10C). ACAM 123 forms slimy orange colonies and contains carotenoids but not flexirubin pigments. The strain is not motile (or only weakly so at best) and is also non-fermentative, proteolytic, moderately saccharolytic and able to perform assimilatory denitrification, via reduction of nitrate to ammonia.

Item Details

Item Type:Refereed Conference Paper
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Microbial ecology
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Biodiversity in Antarctic and Southern Ocean environments
UTAS Author:Shi, Feng (Mr Kevin Feng)
UTAS Author:Powell, S (Dr Shane Powell)
UTAS Author:Bowman, JP (Associate Professor John Bowman)
ID Code:78706
Year Published:2012
Deposited By:Research Division
Deposited On:2012-07-22
Last Modified:2014-11-24

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