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Integrative analysis of Arabidopsis thaliana transcriptomics reveals intuitive splicing mechanism for circular RNA

文献类型： 外文期刊

作者： Sun, Xiaoyong 1 ; Wang, Lin 2 ; Ding, Jiechao 1 ; Wang, Yanru 3 ; Wang, Jiansheng; Zhang, Xiaoyang 1 ; Che, Yulei 1 ;

作者机构： 1.Shandong Agr Univ, Coll Informat Sci & Engn, Agr Big Data Res Ctr, Tai An 271018, Shandong, Peoples R China

2.Nanjing Agr Univ, Dept Plant Pathol, Weigang Rd, Nanjing 210095, Jiangsu, Peoples R China

3.Nanjing Agr Univ, Dept Plant Pathol, Weigang Rd, Nanjing 2100

关键词： alternative splicing;back-splicing;chloroplast;complementary sequences

期刊名称：FEBS LETTERS （ 影响因子：4.124； 五年影响因子：3.814 ）

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收录情况： SCI

摘要： A new regulatory class of small endogenous RNAs called circular RNAs (circRNAs) has been described as miRNA sponges in animals. Using 16 Arabidopsis thaliana RNA-Seq data sets, we identified 803 circRNAs in RNase R-/non-RNase R-treated samples. The results revealed the following features: Canonical and noncanonical splicing can generate circRNAs; chloroplasts are a hotspot for circRNA generation; furthermore, limited complementary sequences exist not only in introns, but also in the sequences flanking splice sites. The latter finding suggests that multiple combinations between complementary sequences may facilitate the formation of the circular structure. Our results contribute to a better understanding of this novel class of plant circRNAs.

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