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Conserved and novel heat stress-responsive microRNAs identified by deep sequencing in Pyropia yezoensis

文献类型： 外文期刊

作者： Liang, Chengwei 1 ; Zhang, Xiaowen 2 ; Shi, Lei 1 ; Hao, Cuicui 1 ; Ye, Naihao 2 ; Li, Fengmei 1 ;

作者机构： 1.Qingdao Univ Sci & Technol, Qingdao 266042, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China

3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries & Aquaculture, Qingdao 266200, Peoples R China

关键词： Deep sequencing; Heat stress; Pyropia yezoensis; MicroRNA

期刊名称：JOURNAL OF APPLIED PHYCOLOGY （ 影响因子：3.215； 五年影响因子：3.612 ）

ISSN： 0921-8971

年卷期： 2018 年 30 卷 1 期

页码：

收录情况： SCI

摘要： Pyropia yezoensis is commonly known as a valuable marine red alga. As a cold-temperate species, high temperature is a critical abiotic stress factor that can affect the growth and development of this seaweed. Exploring the regulatory mechanisms of P. yezoensis resistance to high temperatures has significance in breeding high temperature-resistant strains. To investigate the potential role of microRNA (miRNA) regulation in heat stress, we constructed and sequenced four libraries (one control and three heat stressed). A total of 1213 miRNAs, corresponding to 174 miRNA families and 10 miRNAs precursors producing 14 novel mature miRNAs were identified. Among them, 98 miRNAs were differentially expressed under heat stress. The quantitative PCR of six selected miRNAs verified the deep sequencing data. This study represents the first set of heat-responsive miRNAs from P. yezoensis, and provides valuable information for understanding the miRNA-mediated heat stress responses and resistance mechanisms in P. yezoensis. The results offer a foundation for future studies on the genetic improvement of Pyropia heat stress tolerance.

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