Diversity and succession of microbial communities on typical microplastics in Xincun Bay, a long-term mariculture tropical lagoon

IF 0.9 4区环境科学与生态学 Q4 OCEANOGRAPHY

Oceanological and Hydrobiological Studies Pub Date : 2022-03-01 DOI:10.26881/oahs.2022.1.02

Y. Shi, Shuai Wang, Hong Wang, Zhaoyang Li, Jiali Cai, Qiuying Han, Muqiu Zhao

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引用次数: 2

Abstract

Abstract In this study, three polymer types of microplastics (MPs), polyethylene (PE), polystyrene (PS) and polypropylene (PP), were exposed for 60 days in Xincun Bay (Hainan, China), a long-term mariculture tropical lagoon. High-throughput sequencing and scanning electron microscopy (SEM) were used to investigate the succession of microbial community structure and function on MPs after 10, 30, and 60 days of exposure, respectively. The results showed that diversity indices for bacteria from MPs were higher than those for bacteria from seawater. Significant differences were observed in community structure and metabolic function between MPs and seawater. The microbial network structure on MPs was more complex and dispersed than that in seawater. No significant differences in bacterial community structure and metabolic function were observed among different types of MPs. The biofilm on PS was the thickest, and the network structure on PP was the most complex one. With increasing exposure time, the biofilm attached to the surface of MPs became thicker and microbial composition showed some differences. The analysis of potential degradation bacteria and pathogens with abundance above 0.01% showed that the abundance of several potential plastic biodegraders on MPs was higher than that in seawater, while no potential pathogen was found enriched on MPs.

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长期海水养殖热带泻湖新村湾典型微塑料微生物群落的多样性和演替

摘要在本研究中，三种聚合物类型的微塑料（MP），聚乙烯（PE）、聚苯乙烯（PS）和聚丙烯（PP），在中国海南新村湾一个长期的海水养殖热带泻湖中暴露了60天。分别使用高通量测序和扫描电子显微镜（SEM）研究暴露10、30和60天后MP上微生物群落结构和功能的序列。结果表明，MPs细菌的多样性指数高于海水细菌。MP和海水在群落结构和代谢功能方面存在显著差异。MPs上的微生物网络结构比海水中的更复杂、更分散。不同类型MP的细菌群落结构和代谢功能没有显著差异。PS上的生物膜最厚，PP上的网络结构最复杂。随着暴露时间的增加，附着在MPs表面的生物膜越来越厚，微生物组成也出现了一些差异。对丰度超过0.01%的潜在降解细菌和病原体的分析表明，几种潜在塑料生物降解物在MPs上的丰度高于海水中的丰度，而在MPs上没有发现富集的潜在病原体。

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来源期刊

Oceanological and Hydrobiological Studies 地学-海洋学

CiteScore

1.70

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Oceanological and Hydrobiological Studies is an international journal published by the Institute of Oceanography, University of Gdańsk in Poland. The journal has 4 issues per year and contains papers on all aspects of the marine environment and hydrobiology. All manuscripts are reviewed by editors and independent experts. Based on the referees'' recommendations, the Editor will make a decision on whether to accept a contribution. All articles are published in English. The journal is open to all matters concerning the water environment, thus providing the readers with a wide spectrum of topics in every issue.