| 2种激发子对西瓜枯萎病的诱抗作用 |
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| 引用本文： | 蒲金基,刘晓妹,曾会才,林青萍.2种激发子对西瓜枯萎病的诱抗作用[J].热带作物学报,2003,24(3):47-50. |
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| 作者姓名： | 蒲金基 刘晓妹 曾会才 林青萍 |
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| 作者单位： | 1. 中国热带农业科学院植物保护所,海南,儋州,571737
2. 华南热带农业大学植物保护学院,海南,儋州,571737 |
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| 摘 要： | 分别测定了来源于西瓜枯萎病菌和香蕉枯萎病菌的细胞壁来源的水溶性、热稳定激发予对西瓜枯萎病的诱抗作用。结果表明：2种来源的激发子均有明显的诱导西瓜苗细胞壁木质化的作用，但来源于香蕉枯萎病菌的激发子对木质化的诱导活性比来源于西瓜枯萎病菌的要高；西瓜苗分别经2种激发子处理后，体内过氧化物酶、多酚氧化酶和苯丙氨酸解氮酶的活性均有异常的增加，但来源于西瓜枯萎病菌的激发子对这3种防御酶的诱导速度比来源于香蕉枯萎病菌的要快；经激发子诱导处理后瓜苗对枯萎病菌的抗性有了明显的提高，但来源于西瓜枯萎病菌的激发予的诱抗效果相对较好。
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| 关 键 词： | 西瓜 枯萎病 激发子 诱抗抗性 细胞壁木质化 防御酶 过氧化物酶 多酚氧化酶 苯丙氨酸解氨酶 |
| 修稿时间： | 2003年2月25日 |
Induced Resistance by the Cell-Wall Released Elicitors from Fusarium oxysporum f.sp.niveum and F. oxysporum f.sp. cubense against Fusarium Wilt of Watermelon |
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| Pu Jinji Liu Xiaomei Zeng Huicai Lin Qingping
Plant Protection Institute,CATAS Danzhou,Hainan
College of Plant Protection,SCUTA Danzhou,Hainan.Induced Resistance by the Cell-Wall Released Elicitors from Fusarium oxysporum f.sp.niveum and F. oxysporum f.sp. cubense against Fusarium Wilt of Watermelon[J].Chinese Journal of Tropical Crops,2003,24(3):47-50. |
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| Authors: | Pu Jinji Liu Xiaomei Zeng Huicai Lin Qingping
Plant Protection Institute CATAS Danzhou Hainan
College of Plant Protection SCUTA Danzhou Hainan |
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| Institution: | Pu Jinji Liu Xiaomei Zeng Huicai Lin Qingping
1 Plant Protection Institute,CATAS Danzhou,Hainan 571737
2 College of Plant Protection,SCUTA Danzhou,Hainan 571737) |
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| Abstract: | Two cell -wall released heat -solubilized elicitors from Fusariwn oxysporum f.sp.niveum and F. oxysporum f.sp. cubense were tested for their eliciting activity on watermelon seedlings against fusarium wilt. The elicitor from F. oxysponan f. sp. niveum induced lignification of host cells, but stronger lignification was induced by the elicitor from F. oxysporum f.sp. cubense. The two elicitors also aroused remarkable increase in PPOD, POD, PAL activities of watermelon seedlings, but the elicitor from F. oxysporum f.sp. niveum acted more quickly than that from F. oxysporum f.sp. cubense. The watermelon seedlings showed enhanced resistance to the fusarium wilt after treatment with elicitor from F. oxysporum f.sp. cubense, but higher resistance was induced by the elicitor from F. oxysporum f.sp. niveum. |
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| Keywords: | Fusarium oxysporum cell-wallelicitors induced resistance lignifications defense enzymes |
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