Egan S, Thomas T, Holmström C, Kjelleberg S
School of Microbiology and Immunology, The University of New South Wales, Sydney, Australia.
Environ Microbiol. 2000 Jun;2(3):343-7. doi: 10.1046/j.1462-2920.2000.00107.x.
It is widely accepted that bacterial epiphytes can inhibit the colonization of surfaces by common fouling organisms. However, little information is available regarding the diversity and properties of these antifouling bacteria. This study assessed the antifouling traits of five epiphytes of the common green alga, Ulva lactuca. All isolates were capable of preventing the settlement of invertebrate larvae and germination of algal spores. Three of the isolates also inhibited the growth of a variety of bacteria and fungi. Their phylogenetic positions were determined by 16S ribosomal subunit DNA sequencing. All isolates showed a close affiliation with the genus Pseudoalteromonas and, in particular, with the species P. tunicata. Strains of this bacterial species also display a variety of antifouling activities, suggesting that antifouling ability may be an important trait for members of this genus to be highly successful colonizers of animate surfaces and for such species to protect their host against fouling.
人们普遍认为，附生细菌可以抑制常见污损生物在表面的定殖。然而，关于这些防污细菌的多样性和特性，目前可用信息很少。本研究评估了常见绿藻石莼的五种附生植物的防污特性。所有分离株都能够阻止无脊椎动物幼虫的附着和藻类孢子的萌发。其中三个分离株还抑制了多种细菌和真菌的生长。通过16S核糖体亚基DNA测序确定了它们的系统发育位置。所有分离株都与假交替单胞菌属密切相关，特别是与海鞘假交替单胞菌密切相关。该细菌物种的菌株也表现出多种防污活性，这表明防污能力可能是该属成员成为活跃表面高度成功的定殖者以及此类物种保护其宿主免受污损的重要特性。
