University of Gothenburg, Department of Biological and Environmental Sciences, Sweden.
University of Gothenburg, Department of Biological and Environmental Sciences, Sweden.
Mar Pollut Bull. 2014 Jul 15;84(1-2):208-12. doi: 10.1016/j.marpolbul.2014.05.010. Epub 2014 Jun 11.
Effects of the antimicrobial agent triclosan to natural periphyton communities (biofilms, comprising primarily microalgae and bacteria) were assessed in two independent experiments during spring and summer. For that purpose a semi-static test system was used in which periphyton was exposed to a concentration range of 5-9054 nmol/L triclosan. Effects on algae were analyzed as content and composition of photosynthetic pigments. The corresponding EC50 values were 39.25 and 302.45 nmol/L for the spring and summer experiment, respectively. Effects on periphytic bacteria were assessed as effects on carbon utilization patterns, using Biolog Ecoplates. No inhibition of either total carbon utilization or functional diversity was observed, indicating a pronounced triclosan tolerance of the marine bacteria. In contrast, a small stimulation of the total carbon utilization was observed at triclosan concentrations exceeding 100 nmol/L.
在两个独立的实验中，评估了抗菌剂三氯生对自然附着生物群落（主要由微藻和细菌组成的生物膜）的影响。为此，使用半静态测试系统，将附着生物群落暴露于浓度范围为 5-9054nmol/L 的三氯生中。通过分析光合色素的含量和组成来研究对藻类的影响。春、夏两季实验的相应 EC50 值分别为 39.25 和 302.45nmol/L。使用 Biolog Ecoplates 评估了三氯生对附着生物细菌碳利用模式的影响。结果表明，总碳利用率或功能多样性均未受到抑制，表明海洋细菌对三氯生具有很强的耐受性。相反，在三氯生浓度超过 100nmol/L 时，总碳利用率略有增加。
