title: Antiviral roles of plant ARGONAUTES.
abstract: ARGONAUTES (AGOs) are the effector proteins functioning in eukaryotic RNA silencing pathways. AGOs associate with small RNAs and are programmed to target complementary RNA or DNA. Plant viruses induce a potent and specific antiviral RNA silencing host response in which AGOs play a central role. Antiviral AGOs associate with virus-derived small RNAs to repress complementary viral RNAs or DNAs, or with endogenous small RNAs to regulate host gene expression and promote antiviral defense. Here, we review recent progress towards understanding the roles of plant AGOs in antiviral defense. We also discuss the strategies that viruses have evolved to modulate, attenuate or suppress AGO antiviral functions.
authors.affiliation: Donald Danforth Plant Science Center, St. Louis, MO 63132, USA. Electronic address: acarbonell@ibmcp.upv.es.
authors.forename: Alberto
authors.initials: A
authors.lastname: Carbonell
authors.affiliation: Donald Danforth Plant Science Center, St. Louis, MO 63132, USA.
authors.forename: James C
authors.initials: JC
authors.lastname: Carrington
mesh_terms: D000998:Antiviral Agents / Q000378:metabolism; D060565:Argonaute Proteins / Q000235:genetics* / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D010935:Plant Diseases / Q000235:genetics* / Q000276:immunology / Q000821:virology; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D010942:Plant Viruses / Q000235:genetics / Q000502:physiology*; D034741:RNA, Small Interfering / Q000235:genetics / Q000378:metabolism; D012367:RNA, Viral / Q000235:genetics / Q000378:metabolism
chemical_list: D000998:Antiviral Agents; D060565:Argonaute Proteins; D010940:Plant Proteins; D034741:RNA, Small Interfering; D012367:RNA, Viral