Genome-wide identification of Dicer-like, Argonaute and RNA-dependent RNA polymerase gene families and their expression analyses in response to viral infection and abiotic stresses in Solanum lycopersicum

文献类型： 外文期刊

第一作者： Mao, Zhen-Chuan

作者： Mao, Zhen-Chuan;Kang, Hou-Xiang;Chen, Guo-Hua;Yang, Yu-Hong;Xie, Bing-Yan;Bai, Miao;Yang, Guo-Shun;Chen, Wen-Ting

作者机构：

关键词： MicroRNA;Phylogenetic analysis;RNA silencing;Tomato yellow leaf curl virus

期刊名称：GENE （ 影响因子：3.688； 五年影响因子：3.329 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Dicer, Argonaute and RNA-dependent RNA polymerase form the core components to trigger RNA silencing. Although tomato (. Solanum lycopersicum) is a dicotyledon model plant, no systematic analysis and expression profiling of these genes in tomato has been undertaken previously. In this study, seven Dicer-like (SlDCLs), 15 Argonaute (SlAGOs) and six RNA-dependent RNA polymerase (SlRDRs) genes were identified in tomato. These genes were categorized into four subgroups based on phylogenetic analyses. Comprehensive analyses of gene structure, genomic localization and similarity among these genes were performed. Their expression patterns were investigated by means of expression models in different tissues and organs using online data and semi-quantitative RT-PCR. Many of the candidate genes were up-regulated in response to Tomato yellow leaf curl virus infection and abiotic stresses. The expression models of tandem gene duplications among SlDCL2s indicated the DCL2 family plays an important role in the evolution of tomato.

分类号： R394

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