舒海燕;田保明;

• 1:郑州大学生物工程系

摘要(Abstract)：

[目的]研究病菌对植物的侵染对于培育高抗农作物新品种的重要意义。[方法]将病菌稀释液注入培养拟南芥幼苗的小瓶中,在不同时间监测植物的呼吸作用、光合作用及光系统Ⅱ的变化。[结果]病菌侵染拟南芥幼苗以后,呼吸作用速度普遍增加,呼吸作用速度增高能够提供更多的ATP以供植物抗病的需要。植物在受到病菌侵染以后也需要比平时更多的同化产物。此时需要光合作用速度提高,光合效率增加。但是病菌侵染以后,光合作用普遍降低。病菌侵染拟南芥幼苗以后,光系统Ⅱ的最大效率及通过光系统Ⅱ的光能所占光总量的比例普遍降低,光系统Ⅱ受到损伤,受到损伤的光合器官不能进行正常的光合作用。植物抗病对同化产物需要量的增加与植物光合器官受损伤而不能满足之间的矛盾最终会导致植物受侵染部位的坏死。[结论]病菌侵染拟南芥幼苗以后,光系统Ⅱ的最大效率及通过光系统Ⅱ的光能所占光总量的比例普遍降低,光系统Ⅱ受到损伤。

关键词(KeyWords)： 病菌;侵染;光合器官

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 舒海燕;田保明;

Email:

DOI: 10.13989/j.cnki.0517-6611.2010.26.090

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