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[1]冯雪晴,谭严,贾明敏,等. 中国水稻土壤古菌膜脂iGDGTs的分布特征及其环境意义 [J].武汉工程大学学报,2025,47(06):634-640,705.[doi:10.19843/j.cnki.CN42-1779/TQ.202404015]
　FENG Xueqing,TAN Yan,JIA Mingmin,et al.Distribution and environmental significance of archaea-derived iGDGTs in paddy soils across China [J].Journal of Wuhan Institute of Technology,2025,47(06):634-640,705.[doi:10.19843/j.cnki.CN42-1779/TQ.202404015]
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中国水稻土壤古菌膜脂iGDGTs的分布特征及其环境意义
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
47
期数:
2025年06期
页码:
634-640,705
栏目:
现代大化工
出版日期:
2025-12-31

文章信息/Info

Title:
Distribution and environmental significance of archaea-derived iGDGTs in paddy soils across China
文章编号:
1674 - 2869（2025）06 - 0634 - 07
作者:
冯雪晴; 谭严; 贾明敏; 冯俊俊; 薛建涛*
武汉工程大学绿色化工过程教育部重点实验室，环境生态与生物工程学院，湖北 武汉 430205
Author(s):
FENG Xueqing;  TAN Yan;  JIA Mingmin;  FENG Junjun;  XUE Jiantao*
Key Laboratory of Green Chemical Process, Ministry of Education, School of Environmental Ecology and Bioengineering,Wuhan Institute of Technology, Wuhan 430205, China
关键词:
水稻土壤; 微生物膜脂; iGDGTs; 分布特征; 环境因子
Keywords:
paddy soil;  microbial membrane lipids;  iGDGTs;  distribution pattern;  environmental factors
分类号:
Q931
DOI:
10.19843/j.cnki.CN42-1779/TQ.202404015
文献标志码:
A
摘要:
微生物膜脂甘油二烷基甘油四醚化合物（GDGTs）对环境变化高度敏感，能够有效记录环境因子的波动，因而被广泛应用为全球变化研究的代用指标。基于这一特性，本研究系统调查了中国36个不同区域水稻土壤中的古菌来源 iGDGTs 的组成特征。结果表明：水稻土壤中 iGDGTs 的分布在区域与全国尺度上均存在显著差异。其中，GDGT-2 与 GDGT-3 与环境因子的相关性较强，iGDGTs 的相对丰度主要受有机碳（TOC）、总氮（TN）含量以及土壤 pH 的共同调控。在淹水条件下，iGDGTs 的生物来源受到干扰，伴随土壤 pH 降低，厌氧环境中温室气体的大量释放导致土壤 C、N 含量下降。这一过程表现为 GDGT-2 与 GDGT-3 含量升高，进而引起 TEX86 值增加。同时，奇古菌门的氨氧化古菌受到抑制，由于Crenarchaeol 的含量减少导致 BIT 值升高。而其他指标，如 Ri/b 与 GDGT-0/Crenarchaeol，则主要受土壤含水量的影响。
Abstract:
Glycerol dialkyl glycerol tetraethers (GDGTs), microbial membrane lipids, are sensitive and effective proxies for environmental changes and have been increasingly used in global changes research. In this study, we investigated the composition of iGDGTs (isoprenoidal GDGTs) derived from archaea in paddy soils collected from 36 different regions across China. The results revealed variations in iGDGT distributions at both regional and national scales. Notably, GDGT-2 and GDGT-3 showed significant correlations with environmental factors, and the relative abundance of iGDGTs was primarily controlled by total organic carbon (TOC), total nitrogen (TN) content, and soil pH. Under flooded conditions, the biological sources of iGDGTs were altered. The concomitant decrease in soil pH and the production of greenhouse gases under anaerobic conditions led to decreased soil C and N contents. These changes were manifested as increased abundances of GDGT-2 and GDGT-3, resulting in a higher TEX86 index. Additionally, ammonia-oxidizing archaea (AOA) were inhibited, which reduced the production and accumulation of Crenarchaeol and consequently increased the BIT index. In contrast, other indices, such as Ri/b and GDGT-0/Crenarchaeol, were predominantly influenced by soil water content.

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备注/Memo

备注/Memo:
收稿日期：2024-04-10
基金项目：国家自然科学基金（41903066）；流域关键带演化湖北省重点实验室开放基金（CZE2022F05）
作者简介：冯雪晴，硕士研究生。Email：mewdodu@gmail.com
*通信作者：薛建涛，博士，副教授。Email：xuejiantaocug@163.com

更新日期/Last Update: 2026-01-06