Sequential regulation of gibberellin, brassinosteroid, and jasmonic acid biosynthesis occurs in rice coleoptiles to control the transcript levels of anti-microbial Thionin genes

26Citations
Citations of this article
33Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

Transcripts of thionin genes encoding antimicrobial peptides were present at a high level in rice coleoptiles just after germination, and decreased to an undetectable level after about 3 d, but this decline was suppressed by co-treatment with gibberellic acid (GA3) and brassinolide (BL). The temporal expression patterns of key enzyme genes for the biosyntheses of gibberellins (GAs) and brassinosteroids (BRs) were correlated with the fluctuation of thionin mRNAs. Jasmonic acid (JA) replaced the effect of GA3 and BL, and its change in endogenous level was parallel to that of the thionin genes. These results strongly suggest that thionin gene expression was positively regulated by JA, whose endogenous level was synergistically regulated by GAs and BRs. In contrast, thionin gene expression in etiolated seedlings remained high while the endogenous level of JA was low, suggesting the presence of another signaling pathway in the dark to maintain the thionin level.

Cite

CITATION STYLE

APA

Kitanaga, Y., Jian, C., Hasegawa, M., Yazaki, J., Kishimoto, N., Kikuchi, S., … Suzuki, Y. (2006). Sequential regulation of gibberellin, brassinosteroid, and jasmonic acid biosynthesis occurs in rice coleoptiles to control the transcript levels of anti-microbial Thionin genes. Bioscience, Biotechnology and Biochemistry, 70(10), 2410–2419. https://doi.org/10.1271/bbb.60145

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free