Genome-wide identification of turnip mosaic virus-responsive microRNAs in non-heading Chinese cabbage by high-throughput sequencing

文献类型： 外文期刊

第一作者： Wang, Zhen

作者： Wang, Zhen;Jiang, Dahua;Zhang, Changwei;Tan, Huawei;Li, Yanxiao;Lv, Shanwu;Hou, Xilin;Wang, Zhen;Jiang, Dahua;Zhang, Changwei;Tan, Huawei;Li, Yanxiao;Lv, Shanwu;Hou, Xilin;Wang, Zhen;Jiang, Dahua;Zhang, Changwei;Tan, Huawei;Li, Yanxiao;Lv, Shanwu;Hou, Xilin;Cui, Xiaoyan

作者机构：

关键词： Turnip mosaic virus;MiRNA;Cold;Non-heading Chinese cabbage

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

ISSN：

年卷期：

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收录情况： SCI

摘要： Turnip mosaic virus (TuMV) is the most prevalent viral pathogen infecting most cruciferous plants. MicroRNAs (miRNAs) are around 22 nucleotides long non-protein-coding RNAs that play key regulatory roles in plants. Recent research findings show that miRNAs are involved in plant-virus interaction. However we know little about plant defense and viral offense system networks throughout microRNA regulation pathway. In this study, two small RNA libraries were constructed based on non-heading Chinese cabbage (Brassica campestris ssp. chinensis L Makin, NHCC) leaves infected by TuMV and healthy leaves, and sequenced using the Illumina-Solexa high-throughput sequencing technology. A total of 86 conserved miRNAs belonging to 25 known miRNA families and 45 novel ones were identified. Among them, twelve conserved and ten new miRNAs were validated by real-time fluorescence quantitative PCR (qPCR). Differential expression analysis showed that 42 miRNAs were down-regulated and 27 miRNAs were up-regulated in response to TuMV stress. A total of 271 target genes were predicted using a bioinformatics approach, these genes are mainly involved in growth and resistance to various stresses. We further selected 13 miRNAs and their corresponding target genes to explore their expression pattern under TuMV and/or cold (4 degrees C) stresses, and the results indicated that some of the identified miRNAs could link TuMV response with cold response of NHCC. The characterization of these miRNAs could contribute to a better understanding of plant-virus interaction throughout microRNA regulation pathway. This can lead to finding new approach to defend virus infection using miRNA in Chinese cabbage. (C) 2015 Elsevier B.V. All rights reserved.

分类号： R394

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