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首页> 外文期刊>Trends in Plant Science >A role for the ubiquitin-26S-proteasome pathway in gibberellin signaling
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A role for the ubiquitin-26S-proteasome pathway in gibberellin signaling

机译：泛素26S蛋白酶体途径在赤霉素信号传导中的作用

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摘要

The gibberellin (GA) signaling pathway, like auxin and jasmonate signaling, uses the ubiquitin-proteasome pathway to control expression through protein degradation. A conserved F-box protein of an SCF E3 ubiquitin ligase is a positive regulator of GAsignaling in Arabidopsis and rice. GA apparently stimulates stem elongation by causing this SCF complex to regulate negatively a family of negative regulators of GA response (the DELLA family of putative transcription factors). The DELLA family membersAtRGA or (Repressor of ga1-3) and OsSLR1 (SLENDER RICE1) proteins both appear to be subject to GA-induced proteolysis. The need to have the F-box genes AtSLY1 and OsGID2 for this proteolysis suggests that GA causes proteolysis of AtRGA/OsSLR1 via the SCF~(AtSLY1/0sGID2) ubiquitin ligase.
机译：赤霉素（GA）信号转导途径，如生长素和茉莉酸酯信号转导，利用泛素-蛋白酶体途径通过蛋白质降解来控制表达。 SCF E3泛素连接酶的保守F盒蛋白是拟南芥和水稻中GAsignaling的正调节剂。 GA显然是通过使SCF复合体负调控GA反应的负调控子家族（假定的转录因子DELLA家族）来刺激茎伸长。 DELLA家族成员AtRGA或（ga1-3的阻遏物）和OsSLR1（SLENDER RICE1）蛋白似乎都受到GA诱导的蛋白水解作用。这种蛋白水解需要F-box基因AtSLY1和OsGID2表明，GA通过SCF〜（AtSLY1 / 0sGID2）泛素连接酶引起AtRGA / OsSLR1的蛋白水解。

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