Arabidopsis Phytochrome D Is Involved in Red Light-Induced Negative Gravitropism of Hypocotyles
文献类型： 外文期刊
作者： Li Jian-ping 1 ; Hou Pei 1 ; Zheng Xu 1 ; Song Mei-fang 1 ; Su Liang 1 ; Yang Jian-ping 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China
2.Xinjiang Acad Agr Sci, Inst Nucl & Biotechnol, Urumqi 830091, Peoples R China
3.Chinese Acad Agr Sci, Grad Sch, Beijing 100081, Peoples R China
关键词： phytochrome D;gravitropism;Arabidopsis thaliana
期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）
ISSN： 2095-3119
年卷期： 2014 年 13 卷 8 期
页码：
收录情况： SCI
摘要： The phytochrome gene family, which is in Arabidopsis thaliana, consists of phytochromes A-E (phyA to phyE), regulates plant responses to ambient light environments. PhyA and phyB have been characterized in detail, but studies on phyC to phyE have reported discrepant functions. In this study, we show that phyD regulates the Arabidopsis gravitropic response by inhibiting negative gravitropism of hypocotyls under red light condition. PhyD had only a limited effect on the gravitropic response of roots in red light condition. PhyD also enhanced phyB-regulated gravitropic responses in hypocotyls. Moreover, the regulation of hypocotyl gravitropic responses by phyD was dependent upon the red light fluence rate.
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