Knowledge of biofilm formation on pollutants in the marine realm is expanding, but how communities respond to substrates during colonization remains poorly understood. Here, we assess community assembly and respiration in response to two different micropollutants, virgin high‐density polyethylene (HDPE) microbeads and textile fibres under different light settings. Raman characterization, high‐throughput DNA sequencing data, quantitative PCR, and respiration measurements reveal how a stimulation of aerobic respiration by micropollutants is translated into selection for significantly different communities colonizing the substrates. Despite the lack of evidence for biodegradation of HDPE, an increased abundance and respiration of bacterial taxa closely related to hydrocarbonoclastic Kordiimonas spp. and Alteromonas spp. in the presence of textile waste highlights their biodegradation potential. Incubations with textile fibres exhibited significantly higher respiration rates in the presence of light, which could be partially explained by photochemical dissolution of the textile waste into smaller bioavailable compounds. Our results suggest that the development and increased respiration of these unique microbial communities may potentially play a role in the bioremediation of the relatively long‐lived textile pollutants in marine habitats, and that the respiration of heterotrophic hydrocarbon‐degrading bacteria colonizing marine pollutants can be stimulated by light.

中文翻译：

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光照增强了海洋细菌群落对纺织品废物的生物降解作用。

关于海洋领域污染物的生物膜形成的知识正在扩大，但是在殖民化过程中社区对底物的反应仍知之甚少。在这里，我们评估了在两种不同的微光环境下，两种不同的微污染物，原生高密度聚乙烯（HDPE）微珠和纺织纤维对群落的聚集和呼吸作用。拉曼表征，高通量DNA测序数据，定量PCR和呼吸测量结果揭示了如何将微量污染物对有氧呼吸的刺激转化为对明显不同的定殖底物群落的选择。尽管没有证据表明HDPE具有生物降解性，但与类烃碎屑链球菌属密切相关的细菌类群的丰度和呼吸增加。和链霉菌属 纺织品废料的存在突出了其生物降解的潜力。在光的存在下，与纺织纤维一起孵育会显着提高呼吸速率，这可以部分归因于将纺织废料以光化学方式溶解在较小的可生物利用的化合物中。我们的结果表明，这些独特的微生物群落的发展和呼吸作用可能会在海洋生境中相对长寿的纺织品污染物的生物修复中发挥作用，并且可以刺激定居在海洋污染物中的异养烃降解细菌的呼吸作用通过光。