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Developing New Marine Antifouling Surfaces: Learning from Single-Strain Laboratory Tests

机译：开发新的海洋防污表面：从单应变实验室测试中学习

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The development of antifouling (AF) technology for marine environments is an area of intense research given the severe economic and ecological effects of marine biofouling. Preliminary data from in vitro assays is frequently used to screen the performance of AF coatings. It is intuitive that microbial composition plays a major role in surface colonization. The rationale behind this study is to investigate whether using a mixed population for the in vitro tests yields substantially different results than using single strains during initial screening. A polymeric coating was tested against single- and dual-species cultures of two common microfouler organisms for 49 days. A bacterium (Pseudoaltermonas tunicata) and a cyanobacterium (Cyanobium sp. LEGE 10375) were used in this study. Linear regression analysis revealed that Cyanobium sp. biofilms were significantly associated with a higher number of cells, wet weight, thickness, and biovolume compared to dual-species biofilms. P. tunicata alone had a biofilm growth kinetics similar to dual-species biofilms, although the P. tunicata–Cyanobium sp. mixture developed less dense and thinner biofilms compared to both single-species biofilms. Cyanobium sp. LEGE 10375 biofilms provided the worst-case scenario, i.e., the conditions that caused higher biofilm amounts on the surface material under test. Therefore, it is likely that assessing the AF performance of new coatings using the most stringent conditions may yield more robust results than using a mixed population, as competition between microfouler organisms may reduce the biofilm formation capacity of the consortium.
机译：鉴于海洋生物污染的严重经济和生态影响，对海洋环境进行防污（AF）技术的开发是一个激烈的研究领域。来自体外测定的初步数据通常用于筛选AF涂层的性能。微生物组合物在表面定植中发挥着重要作用是直观的。本研究背后的基本原理是研究是否使用初始筛选期间使用单个菌株的结果基本上不同的结果。测试聚合物涂层，对两种常见的微滤器生物的单一和双种培养物进行测试49天。在本研究中使用了细菌（假肺部Tunicata）和蓝色细菌（Cyanobium sp.Sege 10375）。线性回归分析显示Cyanobium sp。与双物种生物膜相比，生物膜与较高数量的细胞，湿重，厚度和生物细胞显着相关。 P. Tunicata单独进行生物膜生长动力学，类似于双种生物膜，尽管P. Tunicata-cyanobium sp。与单一物种生物膜相比，混合物显着较少，致密的生物膜。 Cyanobium sp。 Lege 10375 Biofilms提供了最坏情况的情况，即导致较高生物膜的条件在被测表面材料上引起的。因此，可能使用最严格的条件评估新涂层的AF性能可能产生比使用混合种群更强的鲁棒结果，因为微滤器生物之间的竞争可能会降低联盟的生物膜形成能力。

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