A limited overlap of interactions between the bacterial community of water and sediment in wetland ecosystem of the Yellow River floodplain

Zhiguang Han; Cong Wang; Binghai Lei; Nan Hui; Yanyan Yu; Yu Shi; Junqiang Zheng

doi:10.3389/fmicb.2023.1193940

A limited overlap of interactions between the bacterial community of water and sediment in wetland ecosystem of the Yellow River floodplain

Front Microbiol. 2023 Jun 22:14:1193940. doi: 10.3389/fmicb.2023.1193940. eCollection 2023.

Authors

Zhiguang Han^#^{1

2}, Cong Wang^#^{1

3}, Binghai Lei^{1

3}, Nan Hui⁴, Yanyan Yu^{1

3}, Yu Shi^{1

3}, Junqiang Zheng^{1

3}

Affiliations

¹ Yellow River Floodplain Ecosystems Research Station, School of Life Sciences, Henan University, Kaifeng, Henan, China.
² Department of Civil Engineering and Architecture, Henan University, Kaifeng, Henan, China.
³ International Joint Research Laboratory for Global Change Ecology, School of Life Sciences, Henan University, Kaifeng, Henan, China.
⁴ School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.

^# Contributed equally.

Abstract

Introduction: Aquatic ecosystems in floodplains provide homes for a variety of active bacterial populations. However, the coexistence pattern of bacterial communities of water and sediment in these ecosystems is unclear.

Methods: In the present study, Illumina Mi-Seq sequencing were to assess bacteria's co-occurrence patterns in the water and sediment of different time dynamics and plant communities of the Yellow River floodplain ecosystem.

Results and discussion: The results showed that compared to water, the α-diversity of the bacterial community was way greater in sediment. The bacterial community structure significantly differed between water and sediment, and there was a limited overlap of interactions between the bacterial community of water and sediment. In addition, bacteria in water and sediment coexisting show different temporal shifts and community assembly patterns. The water was selected for specific groups of microorganisms that assemble over time in a non-reproducible and non-random way, whereas the sediment environment was relatively stable, and the bacterial communities were gathered randomly. The depth and plant cover significantly influenced the structure of a bacterial community in the sediment. The bacterial community in sediment formed a more robust network than those in water to cope with external changes. These findings improved our comprehension of the ecological trends of water and sediment bacterium colonies coexisting enhanced the biological barrier function, and the capacity of floodplain ecosystems to provide services and offered support for doing so.

Keywords: Yellow River floodplain; bacterial community; microbial communication; water and sediment; wetland ecosystem.

Grants and funding

This work was supported by the National Natural Science Foundation of China (Grant Nos. 41930643, 41877340, 42273084, and 42177454), major science and technology projects of Henan Province (Grant No. 201300311300), postdoctoral research grant in Henan Province (Grant No. 202101029), and Key Scientific and Technological Projects of Henan Province (Grant No. 232102321105). The sponsor had no role in the study design; in the collection, analysis, and interpretation of the data; in the writing of the report; and in the decision to submit the article for publication.