DELLA Proteins and GA Signalling in Arabidopsis

被引：0

作者：

Alamgir Hussain

Jinrong Peng

机构：

[1] Institute of Molecular and Cell Biology,

[2] 30 Medical Drive,undefined

来源：

Journal of Plant Growth Regulation | 2003年 / 22卷

关键词：

Gibberellin; DELLA proteins; GAI/RGA/RGL1/RGL2/RHT/d8; Internode elongation; Seed germination; Signal transduction; Proteasome;

D O I：

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学科分类号：

摘要：

Gibberellin (GA) is a classical plant hormone involved in many aspects of plant growth and development. A family of five homologs called the DELLA proteins, comprised of GAI, RGA, RGL1, RGL2 and RGL3, were recently found to act as critical GA signal mediators in Arabidopsis. Reports have shown that GAI and RGA are coupled together to repress stem elongation growth whereas RGL2 is a major negative regulator of seed germination. GA down-regulates DELLA proteins through protein degradation likely via the proteasome pathway. The conserved and functionally important DELLA domain is responsible for protein stability in response to GA.

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页码：134 / 140

页数：6

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