Integrated miRNA-mRNA analysis reveals candidate miRNA family regulating arbuscular mycorrhizal symbiosis of Poncirus trifoliata
文献类型： 外文期刊
作者： Ji, Chuanya 1 ; Song, Fang 2 ; He, Chuan 1 ; An, Jianyong 3 ; Huang, Shengyu 1 ; Yu, Huimin 1 ; Lu, Hang 4 ; Xiao, Shunyuan 5 ; Bucher, Marcel 4 ; Pan, Zhiyong 1 ;
作者机构： 1.Huazhong Agr Univ, Natl Key Lab Germplasm Innovat & Utilizat Hort Cro, Minist Educ, Key Lab Hort Plant Biol, Wuhan, Peoples R China
2.Hubei Acad Agr Sci, Inst Fruit & Tea, Wuhan, Peoples R China
3.Wageningen Univ, Dept Plant Sci, Lab Mol Biol, Wageningen, Netherlands
4.Univ Cologne, Inst Plant Sci, Cologne Bioctr, Cluster Excellence Plant Sci, Cologne, Germany
5.Univ Maryland, Inst Biosci & Biotechnol Res, Dept Plant Sci & Landscape Architecture, Rockville, MD USA
关键词： AM symbiosis; citrus; miR159b; miR477a; transcription factors (TFs)
期刊名称：PLANT CELL AND ENVIRONMENT （ 影响因子：7.3； 五年影响因子：8.1 ）
ISSN： 0140-7791
年卷期： 2023 年 46 卷 6 期
页码：
收录情况： SCI
摘要： Over 70% land plants live in mutualistic symbiosis with arbuscular mycorrhizal (AM) fungi, and maintenance of symbiosis requires transcriptional and post-transcriptional regulation. The former has been widely studied, whereas the latter mediated by symbiotic microRNAs (miRNAs) remains obscure, especially in woody plants. Here, we performed high-throughput sequencing of the perennial woody citrus plant Poncirus trifoliata and identified 3750 differentially expressed genes (DEGs) and 42 miRNAs (DEmiRs) upon AM fungal colonization. By analyzing cis-regulatory elements in the promoters of the DEGs, we predicted 329 key AM transcription factors (TFs). A miRNA-mRNA regulatory network was then constructed by integrating these data. Several candidate miRNA families of P. trifoliata were identified whose members target known symbiotic genes, such as miR167h-AMT2;3 and miR156e-EXO70I, or key TFs, such as miR164d-NAC and miR477a-GRAS, thus are involved in AM symbiotic processes of fungal colonization, arbuscule development, nutrient exchange and phytohormone signaling. Finally, analysis of selected miRNA family revealed that a miR159b conserved in mycorrhizal plant species and a Poncirus-specific miR477a regulate AM symbiosis. The role of miR477a was likely to target GRAS family gene RAD1 in citrus plants. Our results not only revealed that miRNA-mRNA network analysis, especially miRNA-TF analysis, is effective in identifying miRNA family regulating AM symbiosis, but also shed light on miRNA-mediated post-transcriptional regulation of AM symbiosis in woody citrus plants.
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