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Plant Physiol. 2019 Oct 21. pii: pp.00931.2019. doi: 10.1104/pp.19.00931. [Epub ahead of print]

Exchange of small regulatory RNAs between plants and their pests.

Author information

1
Pennsylvania State University CITY: University Park STATE: Pennsylvania United States Of America [US].
2
University of California, Riverside CITY: Riverside STATE: California United States Of America [US].
3
University of California Riverside CITY: Riverside STATE: California POSTAL_CODE: 92521 United States Of America [US].
4
Pennsylvania State University CITY: University Park STATE: Pennsylvania POSTAL_CODE: 16802 United States Of America [US] mja18@psu.edu.

Abstract

Regulatory small RNAs are well known as anti-viral agents, regulators of gene expression, and defenders of genome integrity in plants. Several studies over the last decade have also shown that some small RNAs are exchanged between plants and their pathogens and parasites. Naturally occurring trans-species small RNAs are used by host plants to silence mRNAs in pathogens. These gene silencing events are thought to be detrimental to the pathogen and beneficial to the host. Conversely, trans-species small RNAs from pathogens and parasites are deployed to silence host mRNAs; these events are thought to be beneficial for the pests. The natural ability of plants to exchange small RNAs with invading eukaryotic organisms can be exploited to provide disease resistance. This review gives an overview of the current state of trans-species small RNA research in plants, and discusses several outstanding questions for future research.

PMID:
31636103
DOI:
10.1104/pp.19.00931
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