Artificially induced phased siRNAs promote virus resistance in transgenic plants

Singh, Archana, Mohorianu, Irina-Ioana, Green, Darrell, Dalmay, Tamas, Dasgupta, Indranil and Mukherjee, Sunil (2019) Artificially induced phased siRNAs promote virus resistance in transgenic plants. Virology, 537. pp. 208-215. ISSN 0042-6822

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We previously developed transgenic tobacco plants that were resistant to two geminiviruses. We generated resistance using RNAi constructs that produced trans-acting siRNA (tasiRNA) like secondary siRNAs known as phased siRNA (phasiRNA) that targeted several regions of Tomato Leaf Curl New Delhi Virus (ToLCNDV) and Tomato Leaf Curl Gujarat Virus (ToLCGV) transcripts encoding the RNA silencing suppressor proteins AC2 and AC4. Here, we performed degradome analysis to determine the precise cleavage sites of RNA-RNA interaction between phasiRNA and viral transcripts. We then apply our RNAi technology in tomato, which is the natural host for ToLCNDV and ToLCGV. The relative ease of developing and using phasiRNA constructs represents a significant technical advance in imparting virus resistance in crops and/or important model systems.

Item Type: Article
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
Faculty of Science > School of Biological Sciences
Depositing User: LivePure Connector
Date Deposited: 13 Sep 2019 00:39
Last Modified: 21 Jul 2021 01:23
DOI: 10.1016/j.virol.2019.08.032

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