| 香蕉枯萎病菌菌株致病力分化及其原因研究 |
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| 引用本文： | 曹永军,程 萍,喻国辉,黎永坚,杨紫红. 香蕉枯萎病菌菌株致病力分化及其原因研究[J]. 热带作物学报, 2011, 32(8): 1532-1536. DOI: 10.3969/j.issn.1000-2561.2011.08.030 |
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| 作者姓名： | 曹永军 程 萍 喻国辉 黎永坚 杨紫红 |
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| 作者单位： | 1. 广东海洋大学农学院,广东湛江,524088
2. 广东省珠海市农业科学研究中心,广东珠海,519075 |
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| 基金项目： | 广东省科技厅教育部产学研结合项目(No.2007B090400083); 珠海市科技计划项目(No.PC20081078,No.PC20082043) |
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| 摘 要： | 以田间表现出枯萎病症状的香蕉和粉蕉组织中分离获得的13株尖孢镰刀菌(Fusarium oxysporum)为试验材料,分别测定了不同菌株对香蕉(巴西蕉)和粉蕉(广粉一号)的致病力以及在不同培养液中产生的细胞壁降解酶的活性和毒素含量。结果表明:不同菌株对香蕉和粉蕉的致病力存在明显差异;相关性分析显示,不同菌株产细胞降解酶活性与相应菌株侵染引起的寄主病情指数无相关性,产镰刀菌酸的含量与寄主病情指数呈极显著正相关(r=0.9326)。认为香蕉枯萎病菌菌株间产镰刀菌酸能力的不同是导致其致病力出现分化的主要原因之一。
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| 关 键 词： | 香蕉枯萎病菌 致病力分化 细胞壁降解酶 毒素 镰刀菌酸 |
Pathogenic Differentiation of Different Fusarium oxysporum f. sp. cubense Strains |
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| CAO Yongjun,CHENG Ping,YU Guohui,LI Yongjian and YANG Zihong. Pathogenic Differentiation of Different Fusarium oxysporum f. sp. cubense Strains[J]. Chinese Journal of Tropical Crops, 2011, 32(8): 1532-1536. DOI: 10.3969/j.issn.1000-2561.2011.08.030 |
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| Authors: | CAO Yongjun CHENG Ping YU Guohui LI Yongjian YANG Zihong |
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| Affiliation: | CAO Yongjun1,CHENG Ping2,YU Guohui2,LI Yongjian2,YANG Zihong2 1 Agricultural College,Guangdong Ocean University,Zhanjiang,Guangdong 524048,China 2 Zhuhai Agriculture Research Center,Zhuhai,Guangdong 519075,China |
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| Abstract: | Thirteen different Fusarium oxysporum strains were isolated from the tissues of banana plant which displayed symptoms of Fusarium wilt in Guangdong Province.Their pathogenic differentiation to Musa AAA and Musa ABB were tested by artificial inoculation in greenhouse.The pectinase activity,cellulase activity,fusaric acid contents and benzoic acid contents of the culture filtrates of the isolates were tested and the relationship between them and disease index of the 13 isolates were calculated.The results sho... |
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| Keywords: | Fusarium oxysporum f.sp.cubense Pathogenic differentiaton Cell wall degrading enzymes Toxin fusaric acid |
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