Vertical Stratification of Dissolved Organic Matter Linked to Distinct Microbial Communities in Subtropic Estuarine Sediments

	Vertical Stratification of Dissolved Organic Matter Linked to Distinct Microbial Communities in Subtropic Estuarine Sediments
	Wang, Wenxiu; Tao, Jianchang; Yu, Ke; He, Chen; Wang, Jianjun; Li, Penghui; Chen, Hongmei; Xu, Bu; Shi, Quan; Zhang, Chuanlun
刊名	FRONTIERS IN MICROBIOLOGY
	2021
卷号	12
英文摘要	Dissolved organic matter (DOM) provides carbon substrates and energy sources for sediment microbes driving benthic biogeochemical processes. The interactions between microbes and DOM are dynamic and complex and require the understanding based on fine-scale microbial community and physicochemical profiling. In this study, we characterized the porewater DOM composition in a 300-cm sediment core from the Pearl River estuary, China, and examined the interactions between DOM and archaeal and bacterial communities. DOM composition were highly stratified and associated with changing microbial communities. Compared to bacteria, the amplicon sequence variants of archaea showed significant Pearson correlations (r >= 0.65, P < 0.01) with DOM molecules of low H/C ratios, high C number and double bond equivalents, indicating that the distribution of archaea was closely correlated to recalcitrant DOM while bacteria were associated with relatively labile compounds. This was supported by the presence of auxiliary enzyme families essential for lignin degradation and bcrABCD, UbiX genes for anaerobic aromatic reduction in metagenome-assembled genomes of Bathyarchaeia. Our study demonstrates that niche differentiation between benthic bacteria and archaea may have important consequences in carbon metabolism, particularly for the transformation of recalcitrant organic carbon that may be predominant in aged marine sediments.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20469]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Wang, Wenxiu,Tao, Jianchang,Yu, Ke,et al. Vertical Stratification of Dissolved Organic Matter Linked to Distinct Microbial Communities in Subtropic Estuarine Sediments[J]. FRONTIERS IN MICROBIOLOGY,2021,12.
APA	Wang, Wenxiu.,Tao, Jianchang.,Yu, Ke.,He, Chen.,Wang, Jianjun.,...&Zhang, Chuanlun.(2021).Vertical Stratification of Dissolved Organic Matter Linked to Distinct Microbial Communities in Subtropic Estuarine Sediments.FRONTIERS IN MICROBIOLOGY,12.
MLA	Wang, Wenxiu,et al."Vertical Stratification of Dissolved Organic Matter Linked to Distinct Microbial Communities in Subtropic Estuarine Sediments".FRONTIERS IN MICROBIOLOGY 12(2021).