【作者】 张正竹； 戚丽； 王灼琛； 杜林； 宛晓春；

【Author】 ZHANG Zheng-zhu, QI Li, WANG Zhuo-chen, DU Lin, WAN Xiao-chun (Key Laboratory of Tea Biochemistry & Biotechnology, Ministry of Education and Ministry of Agriculture, Anhui Agricultural University, Hefei 230036, China)

【机构】 安徽农业大学茶叶生物化学与生物技术教育部和农业部重点实验室；

【摘要】 生物群落中的相生相克现象普遍存在,植物可以通过向环境释放化学物质而对另一种生物产生的直接和间接的影响,同时,环境本身以及环境中的其他生物也会直接或间接地对植物的生长产生反馈影响。以单萜烯醇和芳香族醇为主的挥发性物质在茶树叶片中以糖苷的形式大量积累,并在特定条件(采摘、组织损伤、昆虫取食、病菌侵染等)下,被内源和外源糖苷酶水解,释放出挥发性苷元,从而表现出气味、抗病虫等特征;同时茶树也可能在特定环境条件的诱导下,在叶片中合成和积累以挥发物为苷元的糖苷类化合物。更多还原

【Abstract】 Allelopathy is a particular form of amensalism widely found in biocenosis. In this interaction, one species produces and releases of chemical substances that inhibit the growth of another species. On the other hand, a succession will be caused by a change in environmental conditions that is unrelated to the activities of the developing plant community. In tea plants, significant amount of glycosidically bound form volatiles are accumulated in the leaves of Camellia sinensis(L.) O. Kuntze with monoterpene alcohols and aryl alcohols as the major aglycones. These aglycones will be released from their respective glycosides by both the endogenous and exogenous enzymatic hydrolysis under the conditions of leaf plucking, tissue damage, pest damage or exposed to pathogens, etc. The released volatiles play the roles of tea aroma, anti-herbivore or anti-fungal activities. The physical and chemical factors of surrounding stress will probably induce the biosynthesis and the accumulation of glycosidic aroma precursors.更多还原