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Identification of -Responsive MiRNAs in the Small Brown Planthopper,

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Journal Front Physiol
Date 2019 Aug 10
PMID 31396100
Citations 5
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Abstract

is naturally infected with the strain Stri, which induces strong cytoplasmic incompatibility of its host. MicroRNAs (miRNAs) are a class of endogenous non-coding small RNAs that play a critical role in the regulation of gene expression at post-transcriptional level in various biological processes. Despite various studies reporting that affects the miRNA expression of their hosts, the molecular mechanism underlying interactions between and their host miRNAs has not been well understood. In order to better understand the impact of infection on its host, we investigated the differentially expressed miRNAs between -infected and -uninfected strains of . Compared with uninfected strains, infection resulted in up-regulation of 18 miRNAs and down-regulation of 6 miRNAs in male, while 25 miRNAs were up-regulated and 15 miRNAs were down-regulated in female. The target genes of these differentially expressed miRNAs involved in immune response regulation, reproduction, redox homeostasis and ecdysteroidogenesis were also annotated in both sexes. We further verified the expression of several significantly differentially expressed miRNAs and their predicted target genes by qRT-PCR method. The results suggested that appears to reduce the expression of genes related to fertility in males and increase the expression of genes related to fecundity in females. At the same time, may enhance the expression of immune-related genes in both sexes. All of the results in this study may be helpful in further exploration of the molecular mechanisms by which affects on its hosts.

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