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首页> 外文期刊>Plant, Cell & Environment >FERONIA receptor kinase interacts with S-adenosylmethionine synthetase and suppresses S-adenosylmethionine production and ethylene biosynthesis in Arabidopsis
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FERONIA receptor kinase interacts with S-adenosylmethionine synthetase and suppresses S-adenosylmethionine production and ethylene biosynthesis in Arabidopsis

机译:FERONIA受体激酶与S-腺苷甲硫氨酸合成酶相互作用并抑制拟南芥中S-腺苷甲硫氨酸的产生和乙烯的生物合成

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摘要

Environmental inputs such as stress can modulate plant cell metabolism, but the detailed mechanism remains unclear. We report here that FERONIA (FER), a plasma membrane receptor-like kinase, may negatively regulate the S-adenosylmethionine (SAM) synthesis by interacting with two S-adenosylmethionine synthases (SAM1 and SAM2). SAM participates in ethylene, nicotianamine and polyamine biosynthetic pathways and provides the methyl group for protein and DNA methylation reactions. The Arabidopsis fer mutants contained a higher level of SAM and ethylene in plant tissues and displayed a dwarf phenotype. Such phenotype in the fer mutants was mimicked by over-expressing the S-adenosylmethionine synthetase in transgenic plants, whereas sam1/2 double mutant showed an opposite phenotype. We propose that FER receptor kinase, in response to environmental stress and plant hormones such as auxin and BR, interacts with SAM synthases and down-regulates ethylene biosynthesis.
机译:环境输入(例如压力)可以调节植物细胞的新陈代谢,但具体机制尚不清楚。我们在这里报告FERONIA(FER),质膜受体样激酶,可能通过与两个S-腺苷甲硫氨酸合酶(SAM1和SAM2)相互作用来负面调节S-腺苷甲硫氨酸(SAM)的合成。 SAM参与乙烯,烟碱胺和多胺的生物合成途径,并为蛋白质和DNA甲基化反应提供甲基。拟南芥fer突变体在植物组织中含有较高水平的SAM和乙烯,并表现出矮小的表型。通过在转基因植物中过表达S-腺苷甲硫氨酸合成酶来模仿fer突变体中的此类表型,而sam1 / 2双突变体则显示相反的表型。我们提出,FER受体激酶响应环境胁迫和植物激素(如生长素和BR)与SAM合成酶相互作用并下调乙烯的生物合成。

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