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Applied and Environmental Microbiology, May 2003, p. 2484-2490, Vol. 69, No. 5
0099-2240/03/$08.00+0     DOI: 10.1128/AEM.69.5.2484-2490.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Virus Succession Observed during an Emiliania huxleyi Bloom

Marine Biological Association, Citadel Hill, Plymouth PL1 2PB,¹ School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ,² Department of Biological Sciences, University of Stirling, Stirling FK9 4LA,³ Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth PL1 3DH, United Kingdom⁴

Received 6 November 2002/ Accepted 5 February 2003

Denaturing gradient gel electrophoresis was used as a molecular tool to determine the diversity and to monitor population dynamics of viruses that infect the globally important coccolithophorid Emiliania huxleyi. We exploited variations in the major capsid protein gene from E. huxleyi-specific viruses to monitor their genetic diversity during an E. huxleyi bloom in a mesocosm experiment off western Norway. We reveal that, despite the presence of several virus genotypes at the start of an E. huxleyi bloom, only a few virus genotypes eventually go on to kill the bloom.