| 魔芋内生细菌抗软腐病菌株筛选 |
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| 引用本文： | 余婷,林天兴,龚明福.魔芋内生细菌抗软腐病菌株筛选[J].井冈山大学学报（自然科学版）,2015(6):52-55. |
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| 作者姓名： | 余婷 林天兴 龚明福 |
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| 作者单位： | 乐山师范学院生命科学学院, 四川, 乐山 614000,乐山师范学院生命科学学院, 四川, 乐山 614000;峨眉山生物多样性保护与利用研究所, 四川, 乐山 614000,乐山师范学院生命科学学院, 四川, 乐山 614000;峨眉山生物多样性保护与利用研究所, 四川, 乐山 614000 |
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| 基金项目： | 四川省教育厅科研计划项目(15ZA0278,15TD0026);乐山师范学院科研计划项目(Z1160) |
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| 摘 要： | 通过组织分离法从魔芋块茎中分离得到内生细菌,用牛津杯法皿内测试内生细菌对魔芋软腐病菌的拮抗作用,以筛选拮抗软腐病菌能力强的菌株。结果显示从魔芋块茎中分离得到35株内生细菌,35株内生细菌对魔芋软腐病菌均有不同程度的拮抗活性,不同菌株间拮抗活性存在显著差异。初筛中,对软腐病菌相对抑制率(RIR)达到50%以上的内生细菌有17株,100%的有11株。复筛中RIR为100%的内生细菌有8株,其中7株胞外产物的RIR超过了150%。
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| 关 键 词： | 魔芋 内生细菌 软腐病 胡萝卜软腐欧文氏菌 |
| 收稿时间： | 2015/6/17 0:00:00 |
| 修稿时间： | 2015/8/17 0:00:00 |
SCREENING OF ENDOPHYTIC BACTERIA ISOLATED FROM AMORPHAPHALLUS KONJAC AGAINST SOFT ROT DISEASE |
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| YU Ting,LIN Tian-xing and GONG Ming-fu.SCREENING OF ENDOPHYTIC BACTERIA ISOLATED FROM AMORPHAPHALLUS KONJAC AGAINST SOFT ROT DISEASE[J].Journal of Jinggangshan University(Natural Sciences Edition),2015(6):52-55. |
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| Authors: | YU Ting LIN Tian-xing and GONG Ming-fu |
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| Abstract: | Endophytic bacteria lived in Amorphaphallus konjac have the potential of antagonistic bacterial pathogen activity against to Amorphophallus soft rot pathogen Erwinia carotovora subsp carotovora ( ECC). The paper was to study and analyze all strains of 35 endophytic bacteria isolated from A. konjac with strong antagonistic effect against to ECC. The antagonistic bacterial pathogen activity of different bacterial strains were significantly different. The number of endophytic bacteria with relative inhibition ratio ( RIR ) more than 50 % in the first screening was 17, in which there was 11 strains with RIR more than 100 % in the first screening, 8 strains with RIR more than 100 % in the second screening. RIR of the crude extracellular product of seven strains was more than 150%. |
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| Keywords: | Amorphaphallus konjac Endophytic bacteria Soft rot disease Erwinia carotovora subsp carotovora |
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