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Review
. 2024 May 30;65(5):694-703.
doi: 10.1093/pcp/pcae012.

Trans-Species Mobility of RNA Interference between Plants and Associated Organisms

Ya-Chi Nien  1 , Allison Vanek  2 , Michael J Axtell  1   2   3
Affiliations
Review

Trans-Species Mobility of RNA Interference between Plants and Associated Organisms

Ya-Chi Nien et al. Plant Cell Physiol. .

Abstract

Trans-species RNA interference (RNAi) occurs naturally when small RNAs (sRNAs) silence genes in species different from their origin. This phenomenon has been observed between plants and various organisms including fungi, animals and other plant species. Understanding the mechanisms used in natural cases of trans-species RNAi, such as sRNA processing and movement, will enable more effective development of crop protection methods using host-induced gene silencing (HIGS). Recent progress has been made in understanding the mechanisms of cell-to-cell and long-distance movement of sRNAs within individual plants. This increased understanding of endogenous plant sRNA movement may be translatable to trans-species sRNA movement. Here, we review diverse cases of natural trans-species RNAi focusing on current theories regarding intercellular and long-distance sRNA movement. We also touch on trans-species sRNA evolution, highlighting its research potential and its role in improving the efficacy of HIGS.

Keywords: Trans-species RNA interference; Host-induced gene silencing; RNA interference; Small RNA.

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