Abstract
We combined traditional mRNA-seq and RNC-seq together to reveal post-transcriptional regulation events impacting gene expression and interactions between the serious fungal pathogen Verticillium dahliae and a susceptible host, Gossypium hirsutum TM-1. After screening the differentially expressed and translated genes, V. dahliae infection was observed to influence gene transcription and translation in its host. Interestingly, the asparagine synthase (ASN1) gene transcripts increased significantly with the increase of infection time, while the rate of ASN1 protein accumulation in host TM-1 was distinctly lower than that in resistant hosts. We knocked down the ASN1 gene in resistant plants (ZZM2), and found that Verticillium-resistance was significantly reduced upon knockdown of ASN1. Our study revealed both transcriptional and post-transcriptional regulation of gene expression in TM-1 cotton plants infected by V. dahliae, and showed that ASN1 functions in the V. dahliae resistance process. These insights support breeding of disease resistance in cotton.
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