RRC ID 50298
著者 Niwa T, Suzuki T, Takebayashi Y, Ishiguro R, Higashiyama T, Sakakibara H, Ishiguro S.
タイトル Jasmonic acid facilitates flower opening and floral organ development through the upregulated expression of SlMYB21 transcription factor in tomato.
ジャーナル Biosci Biotechnol Biochem
Abstract Plants coordinate the timing of flower opening with pollen and gynoecium maturation to achieve successful pollination. However, little is known about how the coordination is executed. We found that flower bud development was paused immediately before flower opening in a jasmonic acid (JA)-insensitive tomato mutant, jai1-1. Phytohormone measurement and RNA analysis in flower buds revealed that newly synthesised JA peaked at two days before flower opening and the expression of a transcription factor gene SlMYB21 delayed in jai1-1. Buds of transgenic tomato plants expressing an artificial repressor, AtMYB24-SRDX, which was expected to impede the function of SlMYB21, aborted flower opening and resembled those of jai1-1. Furthermore, the AtMYB24-SRDX plants produced abnormal pollen grains deficient in germination and pistils that did not support pollen tube elongation. We concluded that JA facilitates the expression of SlMYB21, which coordinates flower opening, pollen maturation, and gynoecium function in tomato.
巻・号 82(2)
ページ 292-303
公開日 2018-2-1
DOI 10.1080/09168451.2017.1422107
PMID 29448919
MeSH Cyclopentanes / metabolism* Flowers / growth & development* Mutation Oxylipins / metabolism* Phenotype Plant Growth Regulators / metabolism Plant Proteins / genetics* Signal Transduction Solanum lycopersicum / cytology Solanum lycopersicum / genetics* Solanum lycopersicum / growth & development* Solanum lycopersicum / metabolism Transcription Factors / genetics* Up-Regulation*
IF 1.516
引用数 6
リソース情報
トマト TOMJPF00001