Abstract
Wheat (Triticum aestivum) is one of the most important food crops around the world. China is the largest wheat production country and wheat yellow mosaic virus (WYMV) is a non-negligible threat to wheat production. This study aimed to explore miRNAs and their corresponding target genes responsive to WYMV in wheat. Linmai and Jimai were used for miRNA and degradome high-throughput sequencing. After comparison and analysis, differentially expressed miRNAs and their target genes between normal wheat and WYMV-infected wheat were identified. GO and KEGG pathway enrichment analysis were then performed on target genes. A total of 530 miRNAs were identified in all samples, including 106 known miRNAs and 424 novel miRNAs. Among them, 131 miRNAs, corresponding to 85 target genes, were differentially expressed between normal wheat and WYMV-infected wheat. 85 target genes were significantly enriched in 21 GO terms and two KEGG pathways, Plant hormone signal transduction and Monobactam biosynthesis. In conclusion, 131 differentially expressed miRNAs, corresponding to 85 target genes, were identified between normal wheat and WYMVinfected wheat. Our findings provide more evidence on the roles of miRNAs and their target genes in wheat- WYMV interactions.
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