Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80249
Title: Different influences of bacterial communities on Fe (III) reduction and phosphorus availability in sediments of the cyanobacteria- and macrophyte-dominated zones
Authors: Fan, XF
Ding, SM
Gong, MD
Chen, MS
Gao, SS
Jin, ZF
Tsang, DCW 
Keywords: Bacterial abundance and community composition
Dissolved reactive phosphorus
Iron reduction
Freshwater sediment
HR-Peeper
Eutrophication
Issue Date: 2018
Publisher: Frontiers Research Foundation
Source: Frontiers in microbiology, Nov. 2018, v. 9, 2636, p. 1-14 How to cite?
Journal: Frontiers in microbiology 
Abstract: Little is known about the effects of bacterial community on iron (Fe) and phosphorus (P) cycles in sediments under different primary producer habitats in different seasons. Lake Taihu has both the cyanobacteria- and macrophyte-dominated lake zones. In this work, the abundance and structure of bacterial community was investigated using qPCR and 16S rRNA gene high throughput sequencing, respectively. Compared with the sediments in the cyanobacteria-dominated lake zone, sediments in the macrophyte-dominated lake zone had higher TP, TOC and TN contents but lower DO and Eh values. Dissolved reactive P, dissolved Fe, and their molar ratios (Fe/P) were lower in the sediments of the cyanobacteria-dominated lake zone than those in the macrophyte-dominated lake zone. Consistent with this was the significantly lower abundance of total and typical Fe redox transforming bacteria in the sediment of the cyanobacteria-dominated lake zone than those in the macrophyte-dominated lake zone. Correlation analyses also revealed positive influence of abundances of total bacteria and typical Fe reducing bacteria on dissolved Fe and Fe/P ratio. The results showed that, in the cyanobacteria-dominated open water zone, Acidimicrobiaceae was capable of Fe metabolism, contributing to higher P flux in summer. In the cyanobacteria-dominated bay, Sva0081 sediment group and Desulfobulbaceae could transform sulfate to sulfide, which resulted in the reduction of Fe (III), while in the macrophyte-dominated zones, Clostridium sensu stricto 1 could couple oxidation of organic carbon with the reduction of Fe (Ill). The present study adds new knowledge linking the bacterial communities with the physicochemical cycles of Fe and P in sediments under different primary producer habitats.
URI: http://hdl.handle.net/10397/80249
ISSN: 1664-302X
DOI: 10.3389/fmicb.2018.02636
Rights: Copyright © 2018 Fan, Ding, Gong, Chen, Gao, Jin and Tsang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)(https://creativecommons.org/licenses/by/4.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
The following publication Fan, X.F., Ding, S.M., Gong, M.D., Chen, M.S., Gao, S.S., Jin, Z.F., & Tsang, D.C.W. (2018). Different influences of bacterial communities on Fe (III) reduction and phosphorus availability in sediments of the cyanobacteria- and macrophyte-dominated zones. Frontiers in microbiology, 9, 2636, 1-14 is available at https://dx.doi.org/10.3389/fmicb.2018.02636
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