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Diversity and Potential Function of Prokaryotic and Eukaryotic Communities from Different Mangrove Sediments

文献类型： 外文期刊

作者： Zhang, Yong 1 ; Gui, Hongjie 1 ; Zhang, Shufei 2 ; Li, Changxu 3 ;

作者机构： 1.Xiamen Univ, Tan Kah Kee Coll, Key Lab Estuarine Ecol Secur & Environm Hlth, Sch Environm Sci & Engn, Zhangzhou 363105, Peoples R China

2.Chinese Acad Fisheries Sci, South China Sea Fisheries Res Inst, Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Peoples R China

3.Xiamen Univ, Coll Environm & Ecol, State Key Lab Marine Environm Sci, Xiamen 361005, Peoples R China

关键词： mangroves; sediment; prokaryote; eukaryote; microbial communities; human activities

期刊名称：SUSTAINABILITY （ 影响因子：3.889； 五年影响因子：4.089 ）

ISSN：

年卷期： 2022 年 14 卷 6 期

页码：

收录情况： SCI

摘要： Mangrove trees generally play important roles in protecting intertidal ecosystems. The mangrove root-associated sediments provide a repertoire of microbial communities that contribute to pivotal ecological functions in the system. In the present study, we used the high-throughput sequencing and PICRUSt-predicted functional information (based on 16S/18S rDNA profiles) to investigate the bacterial, archaeal, and fungal communities in two mangrove systems, located in the estuary of the Jiulong River (China), with different contaminated conditions and frequencies of human activity. Diverse distribution patterns for microbial communities were observed in six sediment samples collected from the two survey areas, which were found to be related mainly to the substrates in mangrove sediments. The sediments were predominated by relatively higher ratios of heterotrophic bacteria that participated in the degradation of organic matters, including phylum of Chloroflexi, Acidobacteriota, Desulfobacterota, and Proteobacteria. In addition, Crenarchaeota and Ascomycota presented the highest abundances of archaea and fungi, respectively. The relatively high concentrations of calcium, nitrogen, magnesium, and phosphorus in mangrove sediments correlated significantly with the microbial communities. In addition, although the potential functions were similar in the two sites based on COG and KEGG pathways, the abundances of enzymes involved in the degradation processes of cellulose and hemicellulose and the metabolism of nitrogen and sulfur presented distinctions. These results provide insights into the environmental conditions shaping microbial assemblies of the mangrove sediments under the impacts of human activities; for instance, a more abundant amount of calcium was found in urban areas in this study.

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