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Influence of Silver Nanoparticle–Based Coating on Calcareous Rock Surfaces on Microbial Biofilm Colonization in Intertidal Environments in Campeche, Mexico
Water, Air, & Soil Pollution ( IF 2.9 ) Pub Date : 2021-04-18 , DOI: 10.1007/s11270-021-05123-1
Juan Carlos Camacho-Chab , Benjamín O. Ortega-Morales , Christine Gaylarde , Juan E. Pereañez-Sacarías , Hilda P. León-Tejera , Rodrigo E. Tun-Che , Radames J. Álvarez-Zapata , Augusto I. Almeyda-Cen , William Talavera-Pech , Juan F. Illescas-Salinas

The influence of silver nanoparticles (AgNPs) on microbial biofilm colonization on natural calcareous rocks was studied in the Campeche marine intertidal environment in southeast Mexico. The biofilm formation was assessed by color spectrophotometer measurements represented in the CIELAB color space, digital image analysis, confocal laser scanning microscopy, biochemical biomarkers, and enumeration of morphologically characterized cells by FlowCAM®. Coupons were exposed with or without polydimethylsiloxane (PDMS) coatings and without or with various concentrations of AgNPs. Initial colonizers on all surfaces were diatoms of the species Coscinodiscus centralis. After 60 days’ exposure to the marine environment, other genera of microalgae and cyanobacteria were observed. Biofilm formation was reduced on all coated coupons to a greater or lesser extent than bare rock, indicating that these nanomaterials’ presence altered biofilms’ formation on calcareous rock negatively on microbial communities’ essentials for ecosystem health.



中文翻译:

墨西哥坎佩切州潮间环境中石灰岩表面上纳米银基涂层对微生物生物膜定殖的影响

在墨西哥东南部的坎佩切海潮间环境中研究了纳米银颗粒(AgNPs)对天然钙质岩石上微生物生物膜定殖的影响。通过在CIELAB色彩空间中表示的彩色分光光度计测量,数字图像分析,共聚焦激光扫描显微镜,生化生物标记以及通过FlowCAM®进行形态表征的细胞计数,评估生物膜的形成。带有或不带有聚二甲基硅氧烷(PDMS)涂层,不带有或带有不同浓度的AgNP的优惠券都应暴露在外。在所有表面上最初的定居者是中心球藻科的硅藻暴露于海洋环境60天后,观察到其他属的微藻和蓝细菌。与裸露的岩石相比,所有涂层试样上的生物膜形成都减少了或多或少,这表明这些纳米材料的存在对钙质岩石上生物膜的形成产生了不利影响,不利于微生物群落对生态系统健康的影响。

更新日期:2021-04-18
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