Characterization and Cloning of Grape Circular RNAs Identified the Cold Resistance-Related Vv-circATS1
文献类型： 外文期刊
作者： Gao, Zhen 1 ; Li, Jing 1 ; Luo, Meng 1 ; Li, Hui 1 ; Chen, Qiuju 1 ; Wang, Lei 1 ; Song, Shiren 1 ; Zhao, Liping 1 ; Xu, Wenping 1 ; Zhang, Caixi 1 ; Wang, Shiping 1 ; Ma, Chao 1 ;
作者机构： 1.Shanghai Jiao Tong Univ, Sch Agr & Biol, Dept Plant Sci, Shanghai, Peoples R China
2.Shandong Acad Agr Sci, Inst Agrofood Sci & Technol, Key Lab Agroprod Proc Technol Shandong, Jinan 250100, Shandong, Peoples R China
期刊名称：PLANT PHYSIOLOGY （ 影响因子：8.34； 五年影响因子：8.972 ）
ISSN： 0032-0889
年卷期： 2019 年 180 卷 2 期
页码：
收录情况： SCI
摘要： Circular RNAs (circRNAs) are widely distributed and play essential roles in a series of developmental processes, although none have been identified or characterized in grapevines (Vitis vinifera). In this study, we characterized the function of grape circRNA and uncovered thousands of putative back-splicing sites by global transcriptome analysis. Our results indicated that several reported circRNA prediction algorithms should be used simultaneously to obtain comprehensive and reliable circRNA predictions in plants. Furthermore, the length of introns flanking grape circRNAs was closely related to exon circularization. Although the longer introns flanking grape circRNAs appeared to circularize more efficiently, a 20- to 50-nt region seemed large enough to drive grape circRNA biogenesis. In addition, the endogenous introns flanking circularized exon(s) in conjunction with reverse complementary sequences could support the accurate and efficient circularization of various exons in grape, which constitutes a new tool for exploring the functional consequences caused by circRNA expression. Finally, we identified 475 differentially expressed circRNAs in grape leaves under cold stress. Overexpression of Vv-circATS1, a circRNA derived from glycerol-3-P acyltransferase, improved cold tolerance in Arabidopsis (Arabidopsis thaliana), while the linear RNA derived from the same sequence cannot. These results indicate the functional difference between circRNA and linear RNA, and provide new insight into plant abiotic stress resistance.
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