SPEAKER: Chao MA   Associate Professor, Department of Plant Science   [Selected Publications]   1. Chen Q, Deng B, Gao J, Zhao Z, Chen Z, Song S, Wang L, Zhao L, Xu W, Zhang C, Ma C*, Wang S. 2020. MiRNA-encoded small peptide, vvi-miPEP171d1, regulates adventitious root formation in grapevine. Plant Physiology. 183(2): 656-670. 2. Gao Z, Li J, Luo M, Li H, Chen Q, Wang L, Song S, Zhao L, Xu W, Zhang C, Wang S, Ma C*. 2019. Characterization and Cloning of Grape Circular RNAs Identified the Cold Resistance-Related Vv-circATS1. Plant Physiology. 180(2): 966-985. 3. Ma C, Lu Y, Bai S, Zhang W, Duan X, Meng D, Wang Z, Wang A, Zhou Z, Li T*. 2014. Cloning and characterization of miRNAs and their targets, including a novel miRNA-targeted NBS-LRR proteinclass gene in apple (Golden Delicious). Molecular Plant. 7(1):218-30.

TIME ：12:45-13:30 Dec 30 2020 (Wednesday)

VENUE：Room 104, Building B, School of Agriculture and Biology

ORGANIZER：Office of Discipline and Science & Technology, SAB; Young Teachers Association, SAB

TITTLE: Function analysis of miRNA-Encoded Small Peptide in adventitious root formation of grapevine

ABSTRACT: 

microRNA (miRNA) plays an important role in plant development and stress resistance. Numerous studies have confirmed that miRNA achieve gene expression and function regulations by regulating its target genes in different plant species. However, the upstream regulatory mechanism of miRNAs is still rarely reported, there are a lot of questions about what factors can regulate the expression of miRNAs are still need to be explored. miPEP is a small peptide which encoded by the upstream sequence of pre-miRNA of MIR gene. Our research shows that the small peptide vvi-miPEP171d1 produced by vvi-MIR171d specifically induces the expression of vvi-pre-miR171d (vvi-miR171d precursor) and regulates the development of grape root. While it cannot induce the expression of other precursors of this family, or the expression of Arabidopsis thaliana miR171 family precursors, which indicated that miPEP are highly species-specific and gene-specific. Based on the research of miPEP, we provide more useful information (fruit tree area) on the theoretical system of plant peptides and small peptides, as well as new ideas for the development of species-specific active peptide for resistant formulations or fertilizer.