Oomycete pathogens encode RNA silencing suppressors
نویسندگان
چکیده
منابع مشابه
Plant viral suppressors of RNA silencing.
RNA silencing is an ancient eukaryotic pathway in which double stranded RNA (dsRNA) triggers destruction of related RNAs in the cell. Early studies in plants pointed to a role for this pathway as a defense against viruses. Most known plant viruses have RNA genomes and replicate via dsRNA intermediates, thereby serving as potent inducers of RNA silencing early in replication and as silencing tar...
متن کاملAspergillus mycoviruses are targets and suppressors of RNA silencing.
RNA silencing can function as a virus defense mechanism in a diverse range of eukaryotes, and many viruses are capable of suppressing the silencing machinery targeting them. However, the extent to which this occurs between fungal RNA silencing and mycoviruses is unclear. Here, three Aspergillus dsRNA mycoviruses were partially characterized, and their relationship to RNA silencing was investiga...
متن کاملArabidopsis FIERY1, XRN2, and XRN3 are endogenous RNA silencing suppressors.
The eukaryotic defense response posttranscriptional gene silencing (PTGS) is directed by short-interfering RNAs and thwarts invading nucleic acids via the RNA slicing activity of conserved ARGONAUTE (AGO) proteins. PTGS can be counteracted by exogenous or endogenous suppressors, including the cytoplasmic exoribonuclease XRN4, which also degrades microRNA (miRNA)-guided mRNA cleavage products bu...
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The natural maintenance cycles of many mosquito-borne viruses require establishment of persistent non-lethal infections in the invertebrate host. While the mechanisms by which this occurs are not well understood, antiviral responses directed by small RNAs are important in modulating the pathogenesis of viral infections in disease vector mosquitoes. In yet another example of an evolutionary arms...
متن کاملModelling the dynamics of viral suppressors of RNA silencing.
Virus infection in plants is limited by RNA silencing. In turn, viruses can counter RNA silencing with silencing suppressors. Viral suppressors of RNA silencing have been shown to play a role in symptom development in plants. We here study four different strategies employed by silencing suppressors: small interfering RNA (siRNA) binding, double-strand RNA (dsRNA) binding and degrading or inacti...
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ژورنال
عنوان ژورنال: Nature Genetics
سال: 2013
ISSN: 1061-4036,1546-1718
DOI: 10.1038/ng.2525