Temporal characteristics of algae-denitrifying bacteria co-occurrence patterns and denitrifier assembly in epiphytic biofilms on submerged macrophytes in Caohai Lake, SW China

Pinhua XIA; Guoqing LI; Xianfei HUANG; Lei SHI; Xin DU; Tao LIN

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Temporal characteristics of algae-denitrifying bacteria co-occurrence patterns and denitrifier assembly in epiphytic biofilms on submerged macrophytes in Caohai Lake, SW China

Ecology | Updated：2024-10-12

- Temporal characteristics of algae-denitrifying bacteria co-occurrence patterns and denitrifier assembly in epiphytic biofilms on submerged macrophytes in Caohai Lake, SW China
- Temporal characteristics of algae-denitrifying bacteria co-occurrence patterns and denitrifier assembly in epiphytic biofilms on submerged macrophytes in Caohai Lake, SW China
- 海洋湖沼学报(英文) 2023年41卷第6期页码：2276-2291
- Affiliations：
  
  Guizhou Province Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China
- Author bio：
  
  lintao@gznu.edu.cn
- Funds：
  
  the National Natural Science Foundation of China(41867056);the Guizhou Provincial Key Technology R&D Program(2021470;2023216)
- DOI：
  中图分类号：
- 收稿：2022-04-13，
  
  录用：2022-07-28，
  
  网络首发：2022-09-21，
  
  纸质出版：2023-11-01
- Accepted：
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Temporal characteristics of algae-denitrifying bacteria co-occurrence patterns and denitrifier assembly in epiphytic biofilms on submerged macrophytes in Caohai Lake, SW China[J]. 海洋湖沼学报(英文), 2023,41(6):2276-2291.

XIA Pinhua,LI Guoqing,HUANG Xianfei,et al.Temporal characteristics of algae-denitrifying bacteria co-occurrence patterns and denitrifier assembly in epiphytic biofilms on submerged macrophytes in Caohai Lake, SW China[J].Journal of Oceanology and Limnology,2023,41(06):2276-2291.
Temporal characteristics of algae-denitrifying bacteria co-occurrence patterns and denitrifier assembly in epiphytic biofilms on submerged macrophytes in Caohai Lake, SW China[J]. 海洋湖沼学报(英文), 2023,41(6):2276-2291. DOI：

XIA Pinhua,LI Guoqing,HUANG Xianfei,et al.Temporal characteristics of algae-denitrifying bacteria co-occurrence patterns and denitrifier assembly in epiphytic biofilms on submerged macrophytes in Caohai Lake, SW China[J].Journal of Oceanology and Limnology,2023,41(06):2276-2291. DOI：

摘要

Abstract

Denitrifying bacteria in epiphytic biofilms play a crucial role in nitrogen cycle in aquatic habitats. However

little is known about the connection between algae and denitrifying bacteria and their assembly processes in epiphytic biofilms. Epiphytic biofilms were collected from submerged macrophytes (

Patamogeton

lucens

and

Najas

marina

L.) in the Caohai Lake

Guizhou

SW China

from July to November 2020 to: (1) investigate the impact of abiotic and biotic variables on denitrifying bacterial communities; (2) investigate the temporal variation of the algae‍-‍denitrifying bacteria co‍-‍occurrence networks; and (3) determine the contribution of deterministic and stochastic processes to the formation of denitrifying bacterial communities. Abiotic and biotic factors influenced the variation in the denitrifying bacterial community

as shown in the Mantel test. The co-occurrence network analysis unveiled intricate interactions among algae to denitrifying bacteria. Denitrifying bacterial community co-occurrence network complexity (larger average degrees representing stronger network complexity) increased continuously from July to September and decreased in October before increasing in November. The co-‍occurrence network complexity of the algae and

nirS‍

-‍encoding denitrifying bacteria tended to increase from July to November. The co-occurrence network complexity of the algal and denitrifying bacterial communities was modified by ammonia nitrogen (

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=67265840&type=

3.47133350

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=67265856&type=

5.67266655

-N) and total phosphorus (TP)

and water temperature (WT)

according to the ordinary least‍-‍squares (OLS) model. The modified stochasticity ratio (MST) results reveal that deterministic selection dominated the assembly of denitrifying bacterial communities. The influence of environmental variables to denitrifying bacterial communities

as well as characteristics of algal-bacterial co-occurrence networks and the assembly process of denitrifying bacterial communities

were discovered in epiphytic biofilms in this study. The findings could aid in the appropriate understanding and use of epiphytic biofilms denitrification function

as well as the enhancement of water quality.

关键词

Keywords

references

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