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红树内生细菌分离及拮抗辣椒疫霉(Phytophthora capsici)筛选结果表明:各红树体内均有大量的内生细菌,不同红树种类及部位内生细菌的数量均不同,被测定的红树内生细菌中约有27.97%的可培养菌株对辣椒疫霉具有拮抗作用;其中18株拮抗作用较强的细菌在辣椒果上对辣椒疫病菌均有一定的抑制效果,以来自红海榄叶片内的RS261菌株效果最好;经形态、生理生化特征和分子生物学等测定分析,将RS261菌株初步鉴定为解淀粉芽孢杆菌(Bacillus amyloliquefaciens)。
The mangrove endophytic bacteria isolated and antagonistic against Phytophthora capsici screening results showed that: each mangrove body has a large number of endophytic bacteria, mangroves species and the number of endogenous bacteria are different, the measured mangroves Among the endophytic bacteria, about 27.97% of the cultivated strains were antagonistic to Phytophthora capsici; among them, 18 strains with strong antagonistic activity had some inhibitory effects on pepper capsicum in pepper fruits, RS261 strain was the best. The RS261 strain was initially identified as Bacillus amyloliquefaciens by morphological, physiological and biochemical characteristics and molecular biology.