| 14550541 |
Nakamura A, Shimada Y, Goda H, Fujiwara MT, Asami T, Yoshida S: AXR1 is involved in BR-mediated elongation and SAUR-AC1 gene expression in Arabidopsis. FEBS Lett. 2003 Oct 9;553(1-2):28-32.
Limited information is available concerning the interactions between the brassinosteroid (BR) and auxin signaling pathways. The expression pattern of the SAUR-AC1 gene, an early auxin-inducible gene in Arabidopsis, was studied in response to brassinolide (BL), in the presence of a BR-biosynthesis inhibitor, in a BR-deficient mutant, and in combination with auxin. The results suggested that the SAUR-AC1 gene is regulated by BRs independently of auxin levels, and that it is important in BR-mediated elongation. The axr1 (auxin insensitive 1) mutant was less sensitive to BL-induced elongation and BL-induced SAUR-AC1 expression, suggesting that a ubiquitin ligase-mediated system is involved in BR-mediated elongation. |
34(0,1,1,4) |