MicroRNAs involved in the trans-kingdom gene regulation in the interaction of maize kernels and Fusarium verticillioides
文献类型： 外文期刊
作者： Qu, Qing 1 ; Liu, Ning 1 ; Su, Qianfu 3 ; Liu, Xinfang 4 ; Jia, Hui 1 ; Liu, Yuwei 1 ; Sun, Manli 1 ; Cao, Zhiyan 1 ; Dong, Jingao 1 ;
作者机构： 1.Hebei Agr Univ, Plant Pathogen Mycotoxin & Mol Plant Pathol Lab, Hebei Key Lab Plant Physiol & Mol Pathol, Baoding 071001, Peoples R China
2.Hebei Agr Univ, State Key Lab North China Crop Improvement & Regul, Baoding 071001, Peoples R China
3.Jilin Acad Agr Sci, Jilin 130033, Peoples R China
4.Liaoning Acad Agr Sci, Corn Res Inst, Shenyang 110161, Peoples R China
5.Hebei Agr Univ, Coll Plant Protect, Baoding 071001, Peoples R China
关键词： MicroRNA; Fusarium verticillioides; Maize ear rot; Trans-kingdom; miR528
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）
ISSN： 0141-8130
年卷期： 2023 年 242 卷
页码：
收录情况： SCI
摘要： Maize ear rot is a widespread disease and the main pathogen is Fusarium verticillioides. Plant microRNAs (miR-NAs) have great effects on disease resistance and it has been reported that maize miRNA participates in defense responses in maize ear rot. However, the trans-kingdom regulation of miRNAs between maize and F. verticillioides remains uncharacterized. In this study, the relationship between miRNA-like RNAs (milRNAs) of F. verticillioides and pathogenicity was investigated, followed by sRNA analysis and degradome sequencing of miRNA profiles and the target genes of maize and F. verticillioides after inoculation. It was found that the milRNA biogenesis positively regulated the pathogenicity of F. verticillioides by knocking out the gene FvDicer2-encoded Dicer-like protein in F. verticillioides. Following inoculation with F. verticillioides, 284 known and 6571 novel miRNAs were obtained in maize, including 28 miRNAs differentially expressed at multiple time points. The target genes of maize differentially expressed miRNAs in F. verticillioides mediated multiple pathways, including autophagy and MAPK signaling pathway. Fifty-one novel F. verticillioides milRNAs were predicted to target 333 genes in maize involved in MAPK signaling pathways, plant hormone signaling transduction and plant-pathogen interaction pathways. Additionally, the miR528b-5p in maize targeted the mRNA of FvTTP which encoded a twice trans -membrane protein in F. verticillioides. The FvTTP-knockout mutants displayed decreased pathogenicity and reduced synthesis of fumonisins. Thus, by interfering with the translation of FvTTP, the miR528b-5p inhibited F. verticillioides infection. These findings suggested a novel function of miR528 in resisting F. verticillioides infection. The miRNAs identified in this research and their putative target genes can be used to further elucidate the trans-kingdom functions of microRNAs in plant pathogen interaction.
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