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Identification of microRNAs involved in drought stress responses in early-maturing cotton by high-throughput sequencing

文献类型: 外文期刊

作者: Dong, Zhanghui 1 ; Zhang, Jianhong 2 ; Zhu, Qingzhu 1 ; Zhao, Lifen 1 ; Sui, Shuxiang 1 ; Li, Zengshu 1 ; Zhang, Yanli 1 ;

作者机构: 1.Shijiazhuang Acad Agr & Forestry Sci, 479 Shenglidajie Rd, Shijiazhuang 050041, Hebei, Peoples R China

2.Hebei Acad Agr & Forestry Sci, Inst Cotton, 598 Heping Rd, Shijiazhuang 050051, Hebei, P

关键词: MiRNAs;Drought stress;Medium-maturing cotton;Early-maturing cotton;Deep Sequencing

期刊名称:GENES & GENOMICS ( 影响因子:1.839; 五年影响因子:1.329 )

ISSN: 1976-9571

年卷期: 2018 年 40 卷 3 期

页码:

收录情况: SCI

摘要: Drought stress is one of the most important abiotic stresses. Cotton is classified as drought tolerant crop but the regulatory mechanism is unknown. MicroRNAs (miRNAs) have been implicated important roles in stress responses in many plants. However, the study of miRNAs in cotton responsive to drought stress is limited, especially in early-maturing cotton. In this study, we performed deep sequencing of small RNAs to identify known and novel miRNAs involved in the regulation of drought stress and understand the expression profile of miRNAs in early-maturing cotton. Three cotton small RNA libraries: non-stressed Shizao1 (early-maturing cotton variety) library (NSS), drought-stressed Shizao1 library (DSS) and non-stressed Jimian958 (medium-maturing cotton variety) library (NSJ) were constructed for deep sequencing. As a result, we identified a total of 64 known and 67 novel miRNAs in the 3 libraries and 88 of them were dramatically differentially expressed (greater than twofold) during drought stress. In addition, we found the expression of 41 miRNAs increased or reduced more than twofold in early-maturing cotton variety compared with that in medium-maturing cotton variety. Our results significantly increased the number of miRNAs in cotton and revealed for the first time the expression profile of miRNAs for early-maturing cotton.

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