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High viral infection rates in Antarctic and Arctic bacterioplankton

Citation

Sawstrom, C and Graneli, W and Laybourn-Parry, J and Anesio, AM, High viral infection rates in Antarctic and Arctic bacterioplankton, Environmental Microbiology, 9, (1) pp. 250-255. ISSN 1462-2912 (2007) [Refereed Article]


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Copyright Statement

The definitive published version is available online at: http://interscience.wiley.com

Official URL: http://interscience.wiley.com

DOI: doi:10.1111/j.1462-2920.2006.01135.x

Abstract

The frequency of visibly phage-infected bacterial cells (FVIB) and the average number of phages per cell [i.e. burst size (BS)] were determined in Antarctic and Arctic ultra-oligotrophic freshwater environments. Water samples were collected from two Antarctic freshwater lakes and cryoconite holes from a glacier in the Arctic. Data from this bipolar study show the highest FVIB (average 26.1%, range 5.1% to 66.7%) and the lowest BS (average 4, range 2–15) ever reported in the literature. The bacterial density is low in these ultra-oligotrophic freshwater environments but a large proportion of the bacteria are visibly infected. Our results suggest that a constant virioplankton population can be maintained in these extreme environments even though host density is low and often slow growing.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Microbial Ecology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Antarctic and Sub-Antarctic Flora, Fauna and Biodiversity
UTAS Author:Laybourn-Parry, J (Professor Johanna Laybourn-Parry)
ID Code:52793
Year Published:2007
Web of Science® Times Cited:46
Deposited By:Research Division
Deposited On:2008-08-01
Last Modified:2012-04-30
Downloads:0

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