文献类型：期刊文献

中文题名：红树内生细菌AmS2对多种植物病原真菌的抑制作用

英文题名：Antifungal activity of mangrove endophytic bacterium AmS2 against plant pathogenic fungi

作者：欧雄常[1];柳凤[2];何红[1];昝丽梅[2]

机构：[1]广东海洋大学农学院;[2]中国热带农业科学院南亚热带作物研究所

年份：2013

卷号：40

期号：5

起止页码：73

中文期刊名：广东农业科学

外文期刊名：Guangdong Agricultural Sciences

收录：CSTPCD、、北大核心2011、CSCD_E2013_2014、北大核心、CSCD

基金：中央级非盈利性研究机构基本科研业务费专项(1630062012008);国家公益性行业(农业)科研专项(201203092-3)

语种：中文

中文关键词：红树;内生细菌;活性物质;毒力作用

外文关键词：mangrove; endophytie bacterium; antifungal substance; toxicity

中文摘要：采用平板对峙生长法测定了红树内生细菌AmS2菌株对辣椒疫霉和香蕉枯萎菌等多种植物病原真菌的抑制作用,通过生长速率法研究了发酵液甲醇提取物对多种植物病原真菌的毒力作用。结果表明,菌株AmS2对多种病原菌均具有较强的抑制作用,其中对辣椒炭疽菌的抑制作用最强,抑菌带宽为11.5 mm,显微观察抑菌带边缘菌丝末端膨大成球状、分枝增多、细胞壁破裂。发酵液甲醇提取物能够抑制6种病原真菌的生长,随着浓度的增加,抑菌效果增强,其中对辣椒炭疽菌的抑菌效果最好,EC50和EC95分别为0.8923 mg/mL和2.4939 mg/mL。

外文摘要：Antifungal activity of endophytic bacterium AmS2 strain and its methanol extract against 6 pathogenic fungi of plant such as Phytophthora capsici and Fusarium oxysporum f.sp. cubense was tested in laboratory. The results showed that the strain AmS2 showed high antifungal activity against 6 different kinds of the pathogenic fungi, the hypha treated with strain AmS2 withered and deformed seriously. It was shown on PDA plates that the methanol extract had high inhibitory effect on the growth of the fungi, of which the activity on Colletotrichum gloeosporioides was the highest with EC50 and EC95 being only 0.8923 mg/mL and 2.4939 mg/mL respectively.