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Genome-Wide Characterization of miRNAs Involved in N Gene-Mediated Immunity in Response to Tobacco Mosaic Virus in Nicotiana benthamiana

文献类型： 外文期刊

作者： Yin, Kangquan 1 ; Tang, Yang 1 ; Zhao, Jinping 1 ;

作者机构： 1.Tsinghua Univ, Sch Life Sci, Ctr Plant Biol, MOE Key Lab Bioinformat, Beijing 100084, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, State Key Lab Breeding Base Zhejiang Sustainable, Key Lab Biotechnol Plant Protect,Minist China, Hangzhou, Zhejiang, Peoples R China

关键词： miRNA;high-throughput sequencing;tobacco mosaic virus (TMV);immunity;N. benthamiana

期刊名称：EVOLUTIONARY BIOINFORMATICS （ 影响因子：1.625； 五年影响因子：2.38 ）

ISSN： 1176-9343

年卷期： 2015 年 11 卷

页码：

收录情况： SCI

摘要： microRNAs (miRNAs) are a class of endogenous small RNAs (sRNAs) that play pivotal roles in plant development, abiotic stress response, and pathogen response. miRNAs have been extensively studied in plants, but rarely in Nicotiana benthamiana, despite its wide use in plant virology studies, particularly for studying N protein-tobacco mosaic virus (TMV) interactions. We report an efficient method using high-throughput sequencing and bioinformatics to identify genome-wide miRNAs in N. benthamiana. A total of 30 conserved miRNA families and 113 novel miRNAs belonging to 93 families were identified. Some miRNAs were clustered on chromosomes, and some were embedded in host gene introns. The predicted miRNA targets were involved in diverse biological processes, such as metabolism, signaling, and responses to stimuli. miRNA expression profiling revealed that most of them were differentially expressed during N-mediated immunity to TMV. This study provides a framework for further analysis of miRNA functions in plant immunity.

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