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A DNA virus infecting the marine brown alga Pilayella littoralis (Ectocarpales, Phaeophyceae) in culture

Published online by Cambridge University Press:  01 August 1998

INGO MAIER
Affiliation:
Fakultät für Biologie, Universität Konstanz, D-78457 Konstanz, Germany
SUSANNE WOLF
Affiliation:
Fakultät für Biologie, Universität Konstanz, D-78457 Konstanz, Germany
NICOLAS DELAROQUE
Affiliation:
Fakultät für Biologie, Universität Konstanz, D-78457 Konstanz, Germany
DIETER G. MÜLLER
Affiliation:
Fakultät für Biologie, Universität Konstanz, D-78457 Konstanz, Germany
HIROSHI KAWAI
Affiliation:
Kobe University, Research Center for Inland Seas, Kobe 657, Japan
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Abstract

A new large DNA virus (PlitV-1) infects the marine filamentous brown alga Pilayella littoralis. It was collected in Alaska and infects other P. littoralis isolates of different geographic origin. The virus has an icosahedral capsid of c. 161 nm in diameter, enclosing an electron-dense core. The genome consists of double-stranded DNA and is approximately 280000 base pairs in size. The virus is latent in somatic cells of the host and is propagated only upon induction of the host's reproductive organs. It causes deformed sporangia, resulting in infertility, and is structurally similar to other brown algal viruses. PCR amplification of a genomic sequence coding for part of a structural glycoprotein of the Ectocarpus siliculosus virus EsV-1 produced a fragment of similar size to that obtained with EsV-1.

Type
Research Article
Copyright
© 1998 British Phycological Society

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