Double-stranded RNA viruses infecting Epichloe festucae | Zendy

Miriam Gloria Suazo Romo | Zendy; A. Leuchtmann | Zendy; B. GarcÃ­a | Zendy; Íñigo Zabalgogeazcoa | Zendy

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Double-stranded RNA viruses infecting Epichloe festucae

Author(s) -

Miriam Gloria Suazo Romo,

A. Leuchtmann,

B. GarcÃa,

Íñigo Zabalgogeazcoa

Publication year - 2007

Publication title -

nzga research and practice series

Language(s) - English

Resource type - Journals

eISSN - 2463-4751

pISSN - 0110-8581

DOI - 10.33584/rps.13.2006.3059

Subject(s) - biology , mycovirus , virology , genome , epichloë , virus , rna silencing , rna , ascospore , genetics , microbiology and biotechnology , gene , rna polymerase , rna interference , bacteria , spore , symbiosis

Some isolates of EpichloÃ« festucae are asymptomatically infected by EpichloÃ« festucae virus 1 (EfV1), a member of the family Totiviridae. This virus has a genome composed by a 5109 bp molecule of double stranded RNA (dsRNA). In addition, a 3 kbp dsRNA molecule which could be the genome of another virus (EfV2) was frequently found in isolates of the fungal endophyte. In a survey of two populations of E. festucae it was found that 73% of the isolates were infected by one or both viruses. Although both viruses are very efficiently transmitted to conidia, a barrier to virus transmission occurs during ascospore formation. Keywords: EpichloÃ« festucae, virus, dsRNA, Totivirus

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