松针褐斑病菌毒素诱发紫茎泽兰矿质元素渗漏的研究  

Study on the leaking of mineral elements from leaf of Eupatorium adenophorum treated by crude toxins of Lecanosticta acicola

作　　者：张红玉[1,2] 何月秋[1] 

机构地区：[1]云南农业大学植物病理重点实验室,云南昆明650201 [2]西南林学院保护生物学学院云南省高校森林灾害预警与控制重点实验室,云南昆明650224

出　　处：《草业科学》2009年第4期83-86,共4页Pratacultural Science

基　　金：国家自然科学基金资助项目(30660106)

摘　　要：采用电感耦合等离子体发射光谱法(ICP-OES)测定了松针褐斑病菌毒素胁迫紫茎泽兰Eupatorium adenophorum后,叶片及渗漏液中7种矿质元素含量变化。结果表明,毒素胁迫离体叶片和植株后,Ca和K元素含量分别减少65.9%、59.5%和32.9%、53.9%,其他矿质元素Mg、P、Mn、Zn在叶片中的含量有不同程度增加。渗漏液中Ca、K、Fe元素含量较毒素粗提液中含量增加,以Ca元素含量增加最多(近30倍),Mg、P、Mn、Zn元素含量减少。Contents of 7 mineral elements in leaf of Eupatoriurn adenophorurn treated by crude toxins of Lecanosticta acicola were measured by ICP-OES. The results indicated that the contents of Ca and K decreased by 65.9% and 59.5% in leaf （in vitro） and 32.9% and 53.9% in plant （in vivo） respec- tively. Contents of Mg, P, Mn and Zn in the treated leaf increased significantly. Compared with the mineral elements in crude toxin solution, Ca, K and Fe increased and Mg, P, Mn and Zn decreased in leaking liquids of the leaf treated by crude toxins and the content of Ca in the leaking liquids was about 30 times more than control.

关 键 词：矿质元素 紫茎泽兰 毒素 电解质 

分 类 号：S451.1[农业科学—植物保护]