中文摘要：

5＇-三磷酸腺苷（ATP）是生物体各种生命活动所需能量的直接来源。研究表明,ATP在植物细胞线粒体、叶绿体等细胞器中合成后,可以被转运到胞外。胞外ATP（extracellular ATP,eATP）作为一种信号分子,在植物生长发育、逆境胁迫等多种生理过程中发挥重要功能。2014年,植物细胞中发现了第一个ATP受体,为阐明植物细胞eATP信号传导过程奠定了基础。本文中,作者将对植物生长发育及胁迫响应过程中产生的eATP及其功能进行总结,对eATP的发现、释放、识别、调控与信号传导、检测方法等进行论述,并对eATP在植物中的研究提出展望。

英文摘要：

Adenosine 5＇-triphosphate （ATP） serves as a universal energy source for various life activities in all organisms. Previous research has shown that ATP, the small molecule synthesized in organelles such as mitochondria and chloroplast of plant cells, can be transported to the outside of the cell. Extracellular ATP （eATP） is an important signaling molecule used by plants and functions in a various of physiological processes including growth, development and stress responses in plants. Recently, the first ATP receptor of plants was identified, which is a milestone for our overall understanding of the signal transduction pathway regulated by extracellular ATP. In this review, we summarize past researches on the production and roles of eATP in plant growth, development and stress responses, discuss the discovery, releases, recognization, regulation and signal transduction, and assay methods of eATP and propose several research directions which deserve future investigation.