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Deep Sequencing Uncovers Rice Long siRNAs and Its Involvement in Immunity Against Rhizoctonia solani

文献类型： 外文期刊

作者： Niu, Dongdong 1 ; Zhang, Xin 1 ; Song, Xiaoou 1 ; Wang, Zhihui 1 ; Li, Yanqiang 4 ; Qiao, Lulu 1 ; Wang, Zhaoyun 1 ; Liu, 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China

2.Nanjing Agr Univ, Minist Educ, Key Lab Integrated Management Crop Dis & Pests, Nanjing, Jiangsu, Peoples R China

3.Shanxi Acad Agr Sci, Inst Ind Crops, Taiyuan 030000, Shanxi, Peoples R China

4.Chinese Acad Sci, Shanghai Inst Biol Sci, Shanghai Ctr Plant Stress Biol, Beijing, Peoples R China

5.Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, Natl Key Lab Plant Mol Genet, Shanghai, Peoples R China

6.Nanjing Agr Univ, Coll Agr, Nanjing 210095, Jiangsu, Peoples R China

7.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China

期刊名称：PHYTOPATHOLOGY （ 影响因子：4.025； 五年影响因子：4.394 ）

ISSN： 0031-949X

年卷期： 2018 年 108 卷 1 期

页码：

收录情况： SCI

摘要： Small RNA (sRNA) is a class of noncoding RNA that can silence the expression of target genes. In rice, the majority of characterized sRNAs are within the range of 21 to 24 nucleotides (nt) long, whose biogenesis and function are associated with a specific sets of components, such as Dicer-like (OsDCLs) and Argonaute proteins (OsAGOs). Rice sRNAs longer than 24 nt are occasionally reported, with biogenesis and functional mechanism uninvestigated, especially in a context of defense responses against pathogen infection. By using deep sequencing, we identified a group of rice long small interfering RNAs (lsiRNAs) that are within the range of 25 to 40 nt in length. Our results show that some rice lsiRNAs are differentially expressed upon infection of Rhizoctonia solani, the causal agent of the rice sheath blight disease. Bioinformatic analysis and experimental validation indicate that some rice lsiRNAs can target defense-related genes. We further demonstrate that rice lsiRNAs are neither derived from RNA degradation nor originated as secondary small interfering RNAs (siRNAs). Moreover, lsiRNAs require OsDCL4 for biogenesis and OsAGO18 for function. Therefore, our study indicates that rice lsiRNAs are a unique class of endogenous sRNAs produced in rice, which may participate in response against pathogens.

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