Abscisic acid signaling through cyclic ADP-Ribose in plants
Abscisic acid signaling through cyclic ADP-Ribose in plants
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DOI：
10.1126/science.278.5346.2126
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发表时间：
1997-12-19
期刊：
影响因子：
56.9
通讯作者：
Chua, NH
中科院分区：
文献类型：
--
作者：
Wu, Y;Kuzma, J;Chua, NH
脱落酸（阿坝）是介导植物对诸如寒冷、干旱和盐胁迫的响应的主要激素。番茄单细胞显微注射实验被用来确定可能参与阿坝信号转导的中间产物。环ADP-核糖（cADPR）被确定为阿坝反应中的信号分子，Mras显示通过钙发挥其作用。生物测定实验表明，cADPR在拟南芥植株中的表达量在ABA诱导表达前和阿坝处理后均有所增加。
Abscisic acid (ABA) is the primary hormone that mediates plant responses to stresses such as cold, drought, and salinity. Single-cell microinjection experiments in tomato were used to identify possible intermediates involved in ABA signal transduction. Cyclic ADP-ribose (cADPR) was identified as a signaling molecule in the ABA response and Mras shown to exert its effects by way of calcium. Bioassay experiment is showed that the amounts of cADPR in Arabidopsis thaliana plants increased in response to ABA treatment and before ASA-induced gene expression.