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OsAREB1, an ABRE-binding protein responding to ABA and glucose, has multiple functions in Arabidopsis

文献类型: 外文期刊

作者: Jin, Xiao-Fen 1 ; Xiong, Ai-Sheng 1 ; Peng, Ri-He 1 ; Liu, Jin-Ge 1 ; Gao, Feng 1 ; Chen, Jian-Min 2 ; Yao, Quan-Hong 1 ;

作者机构: 1.Shanghai Acad Agr Sci, Biotechnol Res Inst, Shanghai, Peoples R China

2.Yangzhou Univ, Coll Life Sci & Technol, Yangzhou, Jiangsu, Peoples R China

关键词: ABA;ABRE;Dehydration;Flowering;Heat

期刊名称:BMB REPORTS ( 影响因子:4.778; 五年影响因子:4.377 )

ISSN:

年卷期:

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收录情况: SCI

摘要: Expression patterns of OsAREB1 revealed that expression of OsAREB1 gene can be induced by ABA, PEG and heat. Yeast one-hybrid assay demonstrated it can bind to ABA-responsive element (ABRE), which was found in most stress-induced genes. Trdnsgenic Arabidopsis over-expressing OsAREB1 had different responses to ABA and glucose compared to wild-type plants, which suggest OsAREB1 might have a crucial role in these two signaling pathways. Further analysis indicate that OsAREB1 have multiple functions in Arabiclopsis. First, OsAREB1 transgenic plants had higher resistance to drought and heat, and OsAREB1 up-regulated the ABA/stress related gene such as RD29A and RD29B. Second, it delayed plant flowering time by clown-regulating the expression of flowering-related genes, such as FT, SOC1, LFY and AP1. Due to the dates, OsAREB1 may function as a positive regulator in drought/heat stresses response, but a negative regulator in flowering time in Arabiclopsis.

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