1. 首页 > 科研成果 > 近期发表论文

OsDOG, a gibberellin-induced A20/AN1 zinc-finger protein, negatively regulates gibberellin-mediated cell elongation in rice

作　　者：Liu YJ, Xu YY, Xiao J, Ma QB, Li D, Xue Z, Chong K
影响因子：2.409
刊物名称：Journal of Plant Physiology
出版年份：Jul 1 2011
卷：168  期：10  页码：1098-1105

论文摘要：

 The A20/AN1 zinc-finger proteins (ZFPs) play pivotal roles in animal immune responses and plant stress responses. From previous gibberellin (GA) microarray data and A20/AN1 ZFP family member association, we chose Oryza sativa dwarf rice with overexpression of gibberellin-induced gene (OsDOG) to examine its function in the GA pathway. OsDOG was induced by gibberellic acid (GA(3)) and repressed by the GA-synthesis inhibitor paclobutrazol. Different transgenic lines with constitutive expression of OsDOG showed dwarf phenotypes due to deficiency of cell elongation. Additional GA(1) and real-time PCR quantitative assay analyses confirmed that the decrease of GA(1) in the overexpression lines resulted from reduced expression of GA3ox2 and enhanced expression of GA2ox1 and GA2ox3. Adding exogenous GA rescued the constitutive expression phenotypes of the transgenic lines. OsDOG has a novel function in regulating GA homeostasis and in negative maintenance of plant cell elongation in rice.
版权所有 © 中国科学院植物研究所　备案号：京ICP备16067583号-24　文保网安备案号：1101080078
地址：北京市海淀区香山南辛村20号　邮编：100093
电话：010-62590835　技术支持：青云软件