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首页> 外文期刊>Trends in Plant Science >Extracellular ATP: an unexpected role as a signaler in plants
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Extracellular ATP: an unexpected role as a signaler in plants

机译：细胞外ATP：植物中作为信号转导的意想不到的作用

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摘要

ATP and other nucleoside triphosphates not only drive energy-dependent reactions inside cells, but can also function outside the plasma membrane in the extracellular matrix, where they function as agonists that can induce diverse physiological responses without being hydrolyzed. This external role of ATP is well established in animal cells but only recently has it become apparent that extracellular ATP (eATP) can also function as a signaling agent in plants. Recent data have shown that eATP and other nucleotides can induce an increase in the cytosolic Ca(2+) concentration and diverse downstream changes that influence plant growth and defense responses. Ectoapyrase enzymes that regulate the eATP concentration also have an impact on plant growth. These results beg the question of whether there is a receptor that can bind to eATP and transduce this into signaling changes. Answering this will be key to understanding how eATP and ectoapyrases influence plant growth and development.
机译：ATP和其他三磷酸核苷不仅驱动细胞内能量依赖的反应，而且还可以在细胞外基质的质膜外发挥作用，它们在这些物质中起激动剂的作用，可以诱导多种生理反应而不会被水解。 ATP的这种外部作用已在动物细胞中确立，但直到最近才变得很明显，细胞外ATP（eATP）也可以在植物中充当信号传导剂。最新数据表明，eATP和其他核苷酸可以诱导胞质Ca（2+）浓度增加和影响植物生长和防御反应的各种下游变化。调节eATP浓度的乙酰磷酸酶也对植物生长有影响。这些结果引出了是否存在可以与eATP结合并将其转导为信号传导变化的受体的问题。回答这一问题将是了解eATP和外吡喃酮如何影响植物生长发育的关键。

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