EXORDIUM regulates brassinosteroid‐responsive genes

FEBS Letters

Altmann, Thomas²  Mazuch, Jeannine¹  Müssig, Carsten²  Coll-Garcia, Danahe¹ 

[1] Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, 14476 Golm, Germany;Universität Potsdam, Institut für Biochemie und Biologie, Genetik, c/o Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, 14476 Golm, Germany

关键词: Brassinosteroid;    EXORDIUM;    Growth;    BR;    brassinosteroid;    EBL;    24-epibrassinolide;   

DOI  :  10.1016/S0014-5793(04)00255-8

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

In a screen for potential mediators of brassinosteroid (BR) effects, the EXORDIUM (EXO) protein was identified as a regulator of BR-responsive genes. The EXO gene was characterized as a BR-up-regulated gene. EXO overexpression under the control of the 35SCaMV promoter resulted in increased transcript levels of the BR-up-regulated KCS1, Exp5, δ-TIP, and AGP4 genes, which likely are involved in the mediation of BR-promoted growth. 35S::EXO lines grown in soil or in synthetic medium showed increased vegetative growth in comparison to wild-type plants, resembling the growth phenotype of BR-treated plants. Thus, the EXO protein most likely promotes growth via the modulation of gene expression patterns.

【 授权许可】

Unknown