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首页> 外文期刊>Trends in Plant Science >Linking Metabolism to Membrane Signaling: The GABA-Malate Connection
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Linking Metabolism to Membrane Signaling: The GABA-Malate Connection

机译:将代谢与膜信号传递联系起来:GABA-苹果酸连接

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摘要

gamma-Aminobutyric acid (GABA) concentration increases rapidly in tissues when plants encounter abiotic or biotic stress, and GABA manipulation affects growth. This, coupled to GABA's well-described role as a neurotransmitter in mammals, led to over a decade of speculation that GABA is a signal in plants. The discovery of GABA-regulated anion channels in plants provides compelling mechanistic proof that GABA is a legitimate plant-signaling molecule. Here we examine research avenues unlocked by this finding and propose that these plant 'GABA receptors' possess novel properties ideally suited to translating changes in metabolic status into physiological responses. Specifically, we suggest they have a role in signaling altered cycling of tricarboxylic acid (TCA) intermediates during stress via eliciting changes in electrical potential differences across membranes.
机译:当植物遇到非生物或生物胁迫时,组织中的γ-氨基丁酸(GABA)浓度会迅速增加,并且GABA的处理会影响生长。这与GABA在哺乳动物中作为神经递质的广为人知的作用相结合,导致十多年来人们推测GABA是植物中的信号。植物中GABA调节的阴离子通道的发现提供了令人信服的机制证据,证明GABA是合法的植物信号分子。在这里,我们研究了这一发现所释放的研究途径,并提出这些植物的“ GABA受体”具有新颖的特性,非常适合将代谢状态的变化转化为生理反应。具体而言,我们建议它们通过引起跨膜电位差的变化,在应激期间通过信号传递三羧酸(TCA)中间体的循环改变中起作用。

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