Prevalence of viral photosynthetic and capsid protein genes from cyanophages in two large and deep perialpine lakes.

ABSTRACT: Cyanophages are important components of aquatic ecosystems, but their genetic diversity has been little investigated in freshwaters. A yearlong survey was conducted in surface waters of the two largest natural perialpine lakes in France (Lake Annecy and Lake Bourget) to investigate part of this cyanophage diversity through the analysis of both structural (e.g., g20) and functional (e.g., psbA) genes. We found that these cyanophage signature genes were prevalent throughout the year but that the community compositions of g20 cyanomyoviruses were significantly different between the two lakes. In contrast, psbA-containing cyanophages seemed to be more similar between the two ecosystems. We also found that a large proportion of g20 sequences grouped with cyanomyophage isolates. psbA sequences,

SUBMITTER: Zhong X 

PROVIDER: S-EPMC3837735 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature