不同生境具抑菌作用的海洋真菌筛选
2015-10-21林映莹赵唤阁等
林映莹 赵唤阁等

摘要 [目的]为了测定海口沿海海域不同生境的海洋真菌抑菌状况。[方法]从海口西海岸沿线、南渡江入海口以及演丰红树林3个生境分离到162株海洋真菌,通过药敏纸片法测定海洋真菌代谢产物对4株病原细菌的抑菌活性。[结果] 82.72%的海洋真菌具有不同程度的抑菌作用,其中分离自红树林生境的海洋具有抑菌作用的程度最高,西海岸生境分离的真菌次之,入海口生境分离的海洋真菌具有抑菌作用的概率相对最低。[结论]从不同生境分离到的海洋真菌,其抑菌效果也不一样。因此,当需要筛选某种活性的海洋真菌时,可到具有较易筛选出该活性的生境中筛选。
关键词 海口;海洋真菌;生境;抑菌活性;药敏纸片
中图分类号 S931.3 文献标识码 A 文章编号 0517-6611(2015)05-004-03
Screening of Marine Fungi in Different Habitats with the Antibacterial Activity
ZHOU Songlin1,2, LIN Yingying1, ZHAO Huange1 et al
(1. Hainan Provincial Key Laboratory of Tropical Medicine, Hainan Medical College, Haikou, Hainan 571199; 2. College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu 210046)
Abstract [Objective] To determinate the inhibitory condition of marine fungi coastal waters of Haikou in different habitats. [Method] 162 strains of marine fungi were isolated from three different habitats along the west coast of Haikou, Nan Dujiang mouth out, and Yan Feng mangrove, and the antibacterial effects of marine metabolites on the 4 strains of pathogenic bacteria were measured by KB assay. [Result] The present study showed that 82.72% of total marine fungi have different degreed bacteriostasis, which isolated from the mangrove habitat fungi have highest antibacterial activity, and second was isolated from habitat at the west coast of Haikou, and lowest antibacterial activity were isolated estuariy habitat marine fungi. [Conclusion] So the metabolism products of islolated from difenent habitats fungi have diffennt degree antibacterial activity, and we can conclude that screening target strains should from the purpose of habitat.
Key words Haikou; Marine fungi; Habitats; Antibacterial activity; Drug sensitive slips
作者簡介 周松林(1979- ),男,湖南邵阳人,博士研究生,研究方向:微生物学。
收稿日期 20141224
海洋环境具有高压、高盐、低温、低光照、寡营养、低溶氧等特点。为了适应这样的生存环境,海洋生物在新陈代谢、生存繁殖方式和适应方式等方面产生了与陆地生物有所不同的代谢系统以及机体防御系统[1]。但是,由于地球的海陆分布不均,海洋生态环境实际上也是由许多不同的生境组成的,因此在不同生境下蕴育着不同的微生物种群[2]。自从1945年意大利人Brotzu[3-4]在撒孢丁岛城市排污口附近的海水发现一株产头孢菌素 C的顶头孢霉(Cephalosporium acremonium),对海洋真菌的研究脚步就一刻也没有停止过。特别是近10年以来,每年都从海洋真菌中发现的大量结构新奇、具有抑菌、抗肿瘤、抗病毒的新的代谢产物为新药研发提供了大量的先导化合物[5-7]。……
