Root-fed Salicylic Acid in Grape Involves the Response Caused by Aboveground High Temperature

作     者：Hong-Tao Liu Yue-Ping Liu Wei-Dong Huang 

作者机构：College of Food Science &Nutntional Engineenng China Agncultural University Beijing 100083 China Department of Biotechnology Beijing Agricultural College Beijing 102206 China 

出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)

年 卷 期：2008年第50卷第6期

页      面：761-767页

核心收录：

学科分类：09[农学] 0902[农学-园艺学] 090201[农学-果树学] 

基　　金：National Science Foundation for Post-doctoral Scientists of China (20070410628) the National Natural Science Foundation of China(30671468 and 30471192) K.C. Wong Education Foundation, Hong Kong(2006) Specialized Research Fund for the Doctoral Program of Higher Education of China (20050019015) 

主　　题：aboveground grape high temperature root salicylic acid 

摘      要：In order to investigate the transportation and distribution of salicylic acid （SA） from root to aboveground tissues in response to high temperature, the roots of grape plant were fed with 14C-SA before high temperature treatment. Radioactivity results showed that progressive increase in SA transportation from root to aboveground as compared with the control varied exactly with the heat treatment time. Radioactivity results of leaves at different stem heights indicated that the increase in SA amount at the top and middle leaves during the early period was most significant in comparison with the bottom leaves. The up-transportation of SA from root to aboveground tissues was dependent on xylem rather than phloem. Autoradiographs of whole grape plants strongly approved the conclusions drawn above. Root-derived SA was believed to be a fundamental source in response to aboveground high temperature.