Solar radiation-driven decay of cyanophage
infectivity, and photoreactivation of the cyanophage
by host cyanobacteria.
Three Prochlorococcus cyanophage
genomes: Signature features and ecological interpretation.
Previous work had shown that cyanophage viruses have some photosynthesis genes, apparently used to keep the host cyanobacteria on life support during the infection, which otherwise knocks out the cells' basic functions.
They believe the viral complex has a unique shape that makes cyanophage photosynthesis hyperefficient.
So it is possible that as much as 5 per cent of the world's oxygen production results from cyanophage infected cells," he added.
According to the team, the viral photosystem I genes allow the cyanophages to not only take electrons from the proteins involved in photosythesis but also from other algal proteins.
Cyanobacterial core PSI gene cassettes, containing psaJFABCDEK, or psaDCAB gene cassettes forms unique clusters in cyanophage
genomes, suggestive of selection for a distinct function in virus reproduction.
The main objective of this proposal is to gain a deep understanding of the genetic basis for the physiological differences in infection dynamics among closely related T7-like cyanophages
that infect the globally important marine cyanobacteria, Synechococcus and Prochlorococcus, and to ascertain the ecological consequences of these physiological differences.
Others are examining how Synechococcus coexists with a diverse and abundant group of cyanophages
Resistance to co-occurring phages enables marine Synechococcus communities to coexist with cyanophages
abundant in seawater.