蓟马诱导的鹅掌柴叶片虫瘿组织的生理生化响应

以蓟马诱导的鹅掌柴叶片管状虫瘿为材料,分析了虫瘿和非虫瘿组织的抗氧化活性及其它生理响应以及营养物质的含量、分配等。结果发现虫瘿组织中许多生理指标如过氧化氢浓度、过氧化物酶和苯丙氨酸解氨酶活性以及丙二醛含量都比非虫瘿组织低。虫瘿组织比非虫瘿组织光合速率下降而呼吸速率增强,虫瘿组织转变为一个营养库能够富集较多的营养物质。仅仅使用植物激素和蓟马萃取物不能诱导虫瘿的形成,但是,细胞分裂素类植物生长调节物可以引起类似蓟马诱导虫瘿的早期反应。

Physiological Responses of Gall Tissues on IvyTree Leaves Induced by Thrip

In this research, tuber-like galls which induced by thrip on ivy tree leaves were chosen as materials, and the physiological responses as well as partitioning of mineral nutrition, soluble protein and saccharide contents in galled and un-galled tissues were assayed. Results indicated that compared to the un-galled tissues, galling tissues decreased in many physiological indexes including hydrogen peroxide concentration, Peroxidase and phenylnine amonialase activities and the contents of malondialdehyde. Galling tissues decreased in photosynthetic rate but increased in respiratory rate. Galling tissues acted as a nutritive sink that accumulate more nutrition than surrounding un-galled tissues. Phytohormones and insects extracts alone can not induce the formation of galls, but cytokinins such as kinetin, 6-BA and Zeatin can induce responses which are similar to the earlier response of thrip feeding.