Virus-like particles associated with Lyngbya majuscula (Cyanophyta; Oscillatoriacea) bloom decline in Moreton Bay, Australia

Hewson, I., ONeil, J. M. and Dennison, W. C. (2001) Virus-like particles associated with Lyngbya majuscula (Cyanophyta; Oscillatoriacea) bloom decline in Moreton Bay, Australia. Aquatic Microbial Ecology, 25 3: 207-213. doi:10.3354/ame025207

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Author Hewson, I.
ONeil, J. M.
Dennison, W. C.
Title Virus-like particles associated with Lyngbya majuscula (Cyanophyta; Oscillatoriacea) bloom decline in Moreton Bay, Australia
Formatted title
Virus-like particles associated with Lyngbya majuscula (Cyanophyta; Oscillatoriacea) bloom decline in Moreton Bay, Australia
Journal name Aquatic Microbial Ecology   Check publisher's open access policy
ISSN 0948-3055
Publication date 2001
Sub-type Article (original research)
DOI 10.3354/ame025207
Open Access Status File (Publisher version)
Volume 25
Issue 3
Start page 207
End page 213
Total pages 7
Editor F. Rassoulzadegan
Place of publication Oldendorf Luhe, Germany
Publisher Inter-Research
Collection year 2001
Language eng
Subject C1
270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)
770400 Coastal and Estuarine Environment
770303 Control of pests and exotic species
Formatted abstract
Expansive blooms of the toxic cyanobacterium Lyngbya majuscula were observed in 2 shallow water regions of Moreton Bay, Australia. The rapid bloom decline (8 to <1 km2 in <7 d) prompted an investigation of the role of cyanophage viruses in the ecophysiology of L. majuscula. Virus-like particles produced by decaying L. majuscula were observed using electron microscopy. The virus-like particles were similar in morphology to viruses in the genus Cyanostyloviridae. The effect of viruses on L. majuscula photosynthesis was investigated by: (1) creating a virus concentrate using tangential-flow ultrafiltration of seawater surrounding L. majuscula; (2) inoculating L. majuscula with the concentrate; and (3) measuring photosynthetic response using a pulse-amplitude modulated fluorometer. Virus concentrate addition resulted in decreased initial fluorescence, decreased photochemical efficiency and decreased electron transport rate in rapid light curves after 5 d. Viruses present within L. majuscula filaments may play an important role in the bloom dynamics of this ecologically important cyanobacterium.
Keyword Ecology
Marine & Freshwater Biology
Lyngbya Majuscula
Cyanophage
Virus
Lysogeny
Marine Viruses
Phytoplankton
Photosynthesis
Abundance
Seawater
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Created: Tue, 14 Aug 2007, 16:31:41 EST