Author(s): Qiongqiong Lu; Junhong Bai; Jianjun Wu; Guangliang Zhang; Wei Wang
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Keywords: Coastal wetland; Sulfate reducing bacteria; Sulfide oxidizing bacteria; Water; Salinity
Abstract: Surface and subsurface soils were collected in three sampling belts including bare land (HN1), Calamagrostis epigeios (HN2), Typha orientalis (HN3), Phragmites australis (HN4), Tamarix chinensis (HN5) and Suaeda salsa (HN6) along a water and salinity gradient in the Yellow River Delta, China. The microbial community composition of sulfate reducing and oxidizing bacteria using Ilumina MiSeq sequencing were measured along an environmental gradients. With respect to sulfate reducing bacteria, Desulfobulbaceae and Desulfuromonadaceae dominated in soils of all vegetations, and families Desulfobulbaceae was observed higher in HN6, while the maximum of Desulfarculaceae、Desulfomicrobiaceae、Syntrophaceae and Syntrophobacteraceaewere appeared in HN1 and HN2. For the sulfide oxidizing bacteria community, Comamonadaceae、Moraxellaceae and Rhodocyclaceae were the dominated phylums. Thiotrichaceae showed increasing trend with increasing salinity, while Comamonadaceae、Hydrogenophilaceae、Nocardiaceae and Rhodocyclaceae presented an opposite trend. High Hyphomicrobiaceae were found in samples with moderate salinity. RDA analysis suggested that total carbon、total nitrogen、pH、moisture and sulfate were the major factors controlling the community structure of both sulfate reducing bacteria and sulfide oxidizing bacteria across various vegetations.
Year: 2018