Role of extracellular ATP in plant growth,development and stress responses
WANG Hao-ran;L Xue-qin;ZHANG Yue;MAN Yi;JING Yan-ping;College of Biological Sciences and Biotechnology,Beijing Forestry University,National Engineering Laboratory for Tree Breeding,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education;
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.