| 摘要: |
| 用不同抗雪霉叶枯病的小麦品种，分别接种雪霉叶枯菌粗毒素液和分生孢子，测定了小麦叶内苯丙氨酸解氨酶（PAL）活性的变化，初步讨论了毒素在病害发生过程中的致病机理。结果表明：粗毒素液和分子孢子都有提高PAL活性的作用，但二者刺激的强度不同，毒素处理大于分生孢子接种，抗病品种大于感病品种。测定不同浓度粗毒素液处理的小麦叶片PAL活性表明，小麦叶片用40％的粗毒素液处理，叶内PAL活性值最高；低浓度的毒素液刺激PAL活性产生，而高浓度的粗毒素液抑制叶内PAL活性。 |
| 关键词: 小麦，雪霉叶枯菌，毒素，苯丙氨酸解氨酶 |
| DOI： |
| 分类号:S435.121.4 |
| 基金项目:国家“八五”攻关项目 |
|
| Effect of Gerlachia nivalis/i> Toxin on Phenylalanine Ammonia-lyase Activity of Wheat Leaves |
|
Wang Baotong,Liang Yaoqi,Yuan Wenhuan,Wang Baotong,Liang Yaoqi,Yuan Wenhuan,Wang Baotong,Liang Yaoqi,Yuan Wenhuan
|
| Abstract: |
| The changes of PAL activity of wheat leaves were measured with thetreatment of Gerlachia nivalis/i> toxin and infected with the conidium.The PAL activity intoxin-treated wheat leaves incrcased more markedly than when they were infected with the pathogen G,nivalis.The increase of PAL level was greater in resistance variety than in susceptable one,The PAL activity was the greatest when wheat leaves were treated with 40% crude toxin. |
| Key words: wheat,Gerlachia nivalis/i>,toxin,phenylalanine ammonia-lvase(PAL) |
