Programa de Pós-graduação em Ciências da Saúde, Rua Visconde de Paranaguá 102 Centro, Rio Grande, RS, 96203-900, Brazil.
Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Av. Itália km 8 Bairro Carreiros, Rio Grande, RS, 96203-900, Brazil.
Environ Sci Pollut Res Int. 2021 Aug;28(30):41233-41241. doi: 10.1007/s11356-021-13633-y. Epub 2021 Mar 29.
Triclosan is an antimicrobial agent widely used in personal care products and an emerging contaminant with potential to have harmful effects to edaphic organisms. This study aimed to evaluate the impacts of exposure to triclosan on the microbiota, plants, and edaphic animals using isolated bioassays and a microcosm scale representation (multispecies system). Among the isolated bioassays, the phytotoxicity test with Lactuca sativa, avoidance test with Eisenia andrei, and acute toxicity with E. andrei and Armadillidium vulgare were used. The multispecies system used seeds of L. sativa and Sinapis alba, together with earthworms and terrestrial isopods. This system also evaluated microbial activity through alkaline phosphatase and the metabolic profile using Ecoplate™, BIOLOG microplates. Exposure to triclosan impacted seedling growth in the isolated bioassay and germination and root growth in the microcosm scale assay; it also caused mortality in terrestrial isopods, earthworm avoidance and alteration of alkaline phosphatase, and the consumption profile of carbohydrates and carboxylic acids in the microbiota. The ecotoxicological effects evaluated in the multispecies system were perceived even in low concentrations of triclosan, indicating that the interaction of this xenobiotic with the environment and organisms in a more realistic scenario can compromise ecosystem services.
三氯生是一种广泛应用于个人护理产品的抗菌剂，也是一种新兴的污染物，有可能对土壤生物产生有害影响。本研究旨在通过离体生物测定和微宇宙尺度模拟（多物种系统）评估暴露于三氯生对微生物群、植物和土壤动物的影响。在离体生物测定中，使用了生菜的植物毒性试验、赤子爱胜蚓的回避试验以及赤子爱胜蚓和粗糙龙虱的急性毒性试验。多物种系统使用了生菜和白芥的种子，以及蚯蚓和陆生等足类动物。该系统还通过碱性磷酸酶和 Ecoplate™、BIOLOG 微平板的代谢谱评估微生物活性。三氯生暴露在离体生物测定中影响了幼苗的生长，在微宇宙规模测定中影响了种子的萌发和根的生长；它还导致陆生等足类动物死亡、蚯蚓回避和碱性磷酸酶改变，以及微生物群中碳水化合物和羧酸的消耗模式发生变化。多物种系统评估的生态毒理学效应甚至在低浓度的三氯生下也能被感知，这表明这种外源性物质与环境和生物体在更现实的情况下的相互作用可能会破坏生态系统服务。
