河水-地下水交互带铁循环的微生物指示物-FMN还原酶基因

黄莹芸; 沈俊豪; 朱子超; 毛胜军; 刘慧

doi:10.3799/dqkx.2024.033

Volume 50 Issue 4

Apr. 2025

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Article Navigation > Earth Science > 2025 > 50(4): 1575-1584

Huang Yingyun, Sheng Junhao, Zhu Zichao, Mao Shengjun, Liu Hui, 2025. Microbial Indicator of Iron Cycling in Riverwater-Groundwater Interaction Zone - FMN Reductase Gene. Earth Science, 50(4): 1575-1584. doi: 10.3799/dqkx.2024.033

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Huang Yingyun, Sheng Junhao, Zhu Zichao, Mao Shengjun, Liu Hui, 2025. Microbial Indicator of Iron Cycling in Riverwater-Groundwater Interaction Zone - FMN Reductase Gene. Earth Science, 50(4): 1575-1584. doi: 10.3799/dqkx.2024.033

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Microbial Indicator of Iron Cycling in Riverwater-Groundwater Interaction Zone - FMN Reductase Gene

doi: 10.3799/dqkx.2024.033

Huang Yingyun^{1
,
,},
Sheng Junhao¹,
Zhu Zichao¹,
Mao Shengjun¹,
Liu Hui^{1, 2
,
,
,}

1.
School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430078, China
2.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430078, China

Received Date: 2024-01-02
Available Online: 2025-05-10
Publish Date: 2025-04-25

Abstract

Abstract

Flavin mononucleotide (FMN) reductases are important enzymes secreted by microorganisms to facilitate iron oxidation and reduction through electron transfer. In order to explore the feasibility of using FMN reductase genes as indicators of iron cycling microbes, in this study it focused on the interaction zone at the lower reaches of Han River as the research area. In the study it investigated the distributional correlations of different forms Fe, representative iron-cycling microorganisms, and the relative abundance of FMN reductase genes in sediments from three differently characterized riverwater-groundwater interaction zone profiles. The results indicate that (1) Fe(Ⅱ) accumulates in the area below the water table closer to the river, while Fe(Ⅲ) mainly accumulates in the area at the water table line or farther away from the river; (2) iron cycling microbes and FMN reductases were mainly distributed in the areas below the groundwater level close to the river bank or around the water level, with different areas of aggregation for different iron cycling bacteria; (3) there was a significant positive correlation between the total abundance of iron cycling microbes and FMN reductase genes. These findings validate the feasibility of using FMN reductase genes as indicators of iron cycling microbes.
- interactive zone,
- different forms of iron,
- iron cycling microorganism,
- FMN reductase,
- hydrogeology,
- geochemistry

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References(42)

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Microbial Indicator of Iron Cycling in Riverwater-Groundwater Interaction Zone - FMN Reductase Gene

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