文献类型：期刊文献

英文题名：Microplastics modify the microbial-mediated carbon metabolism in mangroves

作者：Xie, Huifeng[1,2];Li, Bingbing[2];Lu, Zifan[2];Liao, Zitang[2];Li, Dan[2];He, Lei[2];Dai, Zhenqing[1,2,3];Sun, Ruikun[1,2];Sun, Shengli[2];Li, Chengyong[1,2,3]

机构：[1]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen 518114, Guangdong, Peoples R China;[2]Guangdong Ocean Univ, Sch Chem & Environm, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Guangdong Prov Observat & Res Stn Trop Ocean Envir, Zhanjiang 524088, Peoples R China

年份：2024

卷号：22

期号：3

起止页码：961

外文期刊名：ENVIRONMENTAL CHEMISTRY LETTERS

收录：SCI-EXPANDED(收录号：WOS:001168761400001)、、EI(收录号：20241715973145)、Scopus(收录号：2-s2.0-85187269367)、WOS

基金：We would like to thank Analytical and Testing Center of Guangdong Ocean University for the experimental guidance and help.

语种：英文

外文关键词：Microplastic; Mangrove; Coastal wetland; Ecological effect; Microbial response; Carbon metabolism

外文摘要：Mangroves, a major ecosystem for carbon sequestration, have been recently identified as a microplastic sink, yet the impact of microplastics on the mangrove microbial community is poorly known. Here, we investigated the metabolic activities of mangrove rhizosphere microbiome in the presence of polyethylene, polystyrene, polyamide, and polyvinylchloride, in microcosms, using Biolog (TM) Ecoplates. Results show that microbial communities in mangrove sediment hold their functional diversity and comprehensive metabolic activity within 56 days of microplastic exposure. However, polyamide and polyvinylchloride microplastics induced a 59.6-66.7% reduction in the rhizosphere microbes' utilization for their preferred polymer carbon sources. Microbes exposed to polyethylene microplastics showed an activated biotransformation for nitrogen-contained carbon sources. Polyethylene and polyamide microplastics caused a 20.1-22.4% loss available nitrogen. Overall, microplastics are altering the carbon and nitrogen metabolism activities of microbiomes in mangrove wetlands.