Characterization and application of small RNAs and RNA silencing mechanisms in fungi |
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Authors: | Cristiano C Nunes Joshua K Sailsbery Ralph A Dean |
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Institution: | Fungal Genomics Laboratory, Center for Integrated Fungal Research, Department of Plant Pathology, North Carolina State University, Raleigh, NC 27606, USA |
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Abstract: | Although extensively cataloged and functionally diverse in plants and animals, the role and targets of small RNAs remain mostly uncharacterized in filamentous fungi. To date, much of the knowledge of small RNAs in filamentous fungi has been derived from studies of a limited group of fungi, most notably in Neurospora crassa. While most of the recently discovered classes of small RNAs appear to be unique to fungi some are commonly found in eukaryotes. It is noteworthy that the RNA silencing protein machinery involved in small RNA biogenesis has also diverged greatly, particularly within filamentous fungi, and may explain the diversity of small RNA classes. In this review, we summarize important classes of eukaryotic small RNAs and provide a current analysis of the RNA silencing machinery based on available fungal genome sequences. Finally, we discuss opportunities for exploiting knowledge of small RNAs and RNA silencing for practical application such as engineering plants resistant to fungal pathogens. |
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