Identification of Fusarium graminearum-responsive miRNAs and their targets in wheat by sRNA sequencing and degradome analysis
文献类型： 外文期刊
作者： Jin, Xiaojie 1 ; Jia, Linlin 1 ; Wang, Yongxia 1 ; Li, Baoquan 1 ; Sun, Dongfa 2 ; Chen, Xueyan 3 ;
作者机构： 1.Henan Acad Agr Sci, Crop Designing Ctr, Zhengzhou 450002, Peoples R China
2.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan 430070, Peoples R China
3.Shandong Acad Agr Sci, Biotechnol Res Ctr, Jinan 250100, Peoples R China
关键词： Wheat; Fusarium graminearum; MicroRNA; Wheat-F; graminearum interaction
期刊名称：FUNCTIONAL & INTEGRATIVE GENOMICS （ 影响因子：3.41； 五年影响因子：3.616 ）
ISSN： 1438-793X
年卷期： 2020 年 20 卷 1 期
页码：
收录情况： SCI
摘要： Fusarium head blight (FHB), a prevalent disease of bread wheat (Triticum aestivum L.) caused by Fusarium graminearum, leads to considerable losses of yield and quality in wheat production. MicroRNAs (miRNAs) are important regulators of plant defense responses. Here, to better understand the F. graminearum-responsive miRNAs, we constructed sRNA libraries for wheat cultivar Sumai 3 challenged with F. graminearum and sterile water, respectively. As a result, a total of 203 known miRNAs from 46 families and 68 novel miRNAs were identified. Among them, 18 known and six novel miRNAs were found to be differentially expressed between the F. graminearum-infected samples and the controls and thus were considered to be responsive to F. graminearum. The expression patterns of eight miRNAs were further validated by stem-loop qRT-PCR. Meanwhile, target genes were validated by degradome sequencing. Integrative analysis of the differentially expressed miRNAs and their targets revealed complex miRNA-mediated regulatory networks involved in the response of wheat to F. graminearum infection. Our findings are expected to facilitate a better understanding of the miRNA regulation in wheat-F. graminearum interaction.
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