RRC ID 81557
Author Hiroko Asakura, Mayui Tanaka, Tomoko Tamura, Yoshikazu Saito, Takashi Yamakawa, Keiko Abe, Tomiko Asakura
Title Genes related to cell wall metabolisms are targeted by miRNAs in immature tomato fruits under drought stress
Journal Bioscience, Biotechnology, and Biochemistry
Abstract ABSTRACTThe metabolism of tomato fruits changes when plants experience drought stress. In this study, we investigated changes in microRNA (miRNA) abundance and detected 32 miRNAs whose expression changes in fruit. The candidate target genes for each miRNA were predicted from the differentially expressed genes identified by transcriptome analysis at the same fruit maturation stage. The predicted targeted genes were related to cell wall metabolisms, response to pathogens, and plant hormones. Among these, we focused on cell wall metabolism-related genes and performed a dual luciferase assay to assess the targeting of their mRNAs by their predicted miRNA. As a result, sly-miR10532 and sly-miR7981e suppress the expression of mRNAs of galacturonosyltransferase-10 like encoding the main enzyme of pectin biosynthesis, while sly-miR171b-5p targets β-1,3-glucosidase mRNAs involved in glucan degradation. These results will allow the systematic characterization of miRNA and their target genes in the tomato fruit under drought stress conditions.
Volume 87
Pages 290-302
Published 2023-2-24
DOI 10.1093/bbb/zbac209
PMID 36572396
MeSH Cell Wall / metabolism Droughts Fruit / metabolism Gene Expression Regulation, Plant MicroRNAs* / genetics Solanum lycopersicum*
Resource
Tomato TOMJPF00001