Abstract:
:Phycoerythrin-containing Synechococcus strains are unicellular cyanobacteria that are of great ecological importance in the marine environment. These organisms are known to be susceptible to infection by cyanophages (viruses that infect cyanobacteria). The infection cycle takes several hours and during this time the cyanophages may potentially modify the cyanobacterial light-harvesting apparatus. This study based on a model system consisting of Synechococcus sp. WH7803 and cyanophage S-PM2 revealed a progressive increase in the content of phycoerythrin per cell and per phycobilisome postinfection using absorption and emission spectrophotometry and sodium dodecyl sulphate-polyacrylamide gel electrophoresis. An increased cellular content of chlorophyll a was also revealed using absorption spectrophotometry. The transcript levels of the phycoerythrin-coding operons, mpeBA and cpeBA, were found to increase after phage infection using quantitative real-time PCR. This phage-induced increase in light-harvesting capacity could potentially increase the photosynthetic activity of the host to satisfy the phage's energy demand for reproduction.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Shan J,Jia Y,Clokie MR,Mann NHdoi
10.1111/j.1574-6968.2008.01148.xsubject
Has Abstractpub_date
2008-06-01 00:00:00pages
154-61issue
2eissn
0378-1097issn
1574-6968pii
FML1148journal_volume
283pub_type
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