首页> 外文会议>The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会) >Signal Transduction Pathway of Al Responsive Malate Release in Arabidopsis-Involvement of Reversible Protein Phosphorylation and STOP1 Transcription Factor
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Signal Transduction Pathway of Al Responsive Malate Release in Arabidopsis-Involvement of Reversible Protein Phosphorylation and STOP1 Transcription Factor

机译:拟南芥中Al响应性苹果酸释放的信号转导途径-涉及可逆蛋白磷酸化和STOP1转录因子。

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摘要

Arabidopsis releases malate from the roots in response to aluminum, which is specific to Al and not elicited by other rhizotoxic ions. The malate release was activated by Al and concomitant with increased expression of the AtALMT1 gene, an Arabidopsis homologue of the wheat Al-activated malate transporter TaALMT1. Pharmacological treatments indicate that AtALMT1 system is regulated by both transcriptional and post-transcriptional processes downstream of reversibly phosphorylated proteins. A mutant study indicated that activation of AtALMT1 transcription requires a Cys2-Hys2 zinc finger transcription factor, STOP1 (Sensitive to Proton rhizotoxicity 1) , which is essential for both Al3+ and H+ tolerances of Arabidopsis.
机译:拟南芥响应铝而从根部释放出苹果酸,铝是铝特有的,不会被其他根际毒性离子引起。苹果酸释放被Al激活,并伴随着AtALMT1基因表达的增加,该基因是小麦Al激活的苹果酸转运蛋白TaALMT1的拟南芥同源物。药理学治疗表明AtALMT1系统受可逆磷酸化蛋白下游的转录和转录后过程调控。一项突变研究表明,AtALMT1转录的激活需要Cys2-Hys2锌指转录因子STOP1(对质子根际毒性1敏感),这对于拟南芥的Al3 +和H +耐受性都是必不可少的。

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