title: Strong seasonality and interannual recurrence in marine myovirus communities.
abstract: The temporal community dynamics and persistence of different viral types in the marine environment are still mostly obscure. Polymorphism of the major capsid protein gene, g23, was used to investigate the community composition dynamics of T4-like myoviruses in a North Atlantic fjord for a period of 2 years. A total of 160 unique operational taxonomic units (OTUs) were identified by terminal restriction fragment length polymorphism (TRFLP) of the gene g23. Three major community profiles were identified (winter-spring, summer, and autumn), which resulted in a clear seasonal succession pattern. These seasonal transitions were recurrent over the 2 years and significantly correlated with progression of seawater temperature, Synechococcus abundance, and turbidity. The appearance of the autumn viral communities was concomitant with the occurrence of prominent Synechococcus blooms. As a whole, we found a highly dynamic T4-like viral community with strong seasonality and recurrence patterns. These communities were unexpectedly dominated by a group of persistently abundant viruses.
authors.affiliation: Department of Biology, University of Bergen, Bergen, Norway.
authors.forename: A
authors.initials: A
authors.lastname: Pagarete
authors.forename: C-E T
authors.initials: CE
authors.lastname: Chow
authors.forename: T
authors.initials: T
authors.lastname: Johannessen
authors.forename: J A
authors.initials: JA
authors.lastname: Fuhrman
authors.forename: T F
authors.initials: TF
authors.lastname: Thingstad
authors.forename: R A
authors.initials: RA
authors.lastname: Sandaa
mesh_terms: D044822:Biodiversity; D036022:Capsid Proteins / Q000235:genetics; D017900:Myoviridae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D012150:Polymorphism, Restriction Fragment Length; D012621:Seasons; D012623:Seawater / Q000821:virology*; D046940:Synechococcus / Q000254:growth & development; D013696:Temperature; D019562:Viral Load
chemical_list: D036022:Capsid Proteins
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