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Post-Transcriptional Gene Silencing Conferred by the Ectopic Expression of the Grapevine miRNA-g1 and Inhibition of the Response by Anti-miRNA-g1 Inhibitor Cover

Post-Transcriptional Gene Silencing Conferred by the Ectopic Expression of the Grapevine miRNA-g1 and Inhibition of the Response by Anti-miRNA-g1 Inhibitor

Open Access
|Dec 2011

Abstract

Our results show that a subset (miRNA cluster 1) of grapevine (Vitis vinifera L., cv. Limberger) microRNAs (miRNAs) can be strongly induced by different apoptosis inducers including methyl jasmonate (MeJA), botrycin, cinerein and/or H2O2. We report here that the expression of endogenous miRNA-g1 and miRNA-g7 can be efficiently silenced in grapevine protoplasts using artificial miRNA (amiRNA) technology. Furthermore, we demonstrate that the ectopic expression of amiRNAs (anti-mir miRNA-g1 and pre-mir miRNA-g1) designed to target a mature miRNA-g1 directs jasmonate-induced silencing against DAD1 protein (defender against death 1). These collective results strongly support the idea that a sub-population of grapevine miRNAs induced by apoptosis may function in one of the most critical defense systems for structural and mechanical fitness.

DOI: https://doi.org/10.2478/v10207-011-0014-z | Journal eISSN: 1338-4376 | Journal ISSN: 0551-3677
Language: English
Page range: 137 - 143
Published on: Dec 25, 2011
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2011 Vladimír Repka, Mária Čarná, published by National Agricultural and Food Centre
This work is licensed under the Creative Commons License.

Volume 57 (2011): Issue 4 (December 2011)