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土地使用类型作为生态驱动因素:揭示微生物基因组适应在超大Sb采矿生态系统中对PTE的适应

Xiaomei Jiang¹, Renjian Deng², Wenqi Deng¹

¹School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China.

Environmental research

|November 22, 2025

概括

反矿开采污染土壤有毒元素,改变微生物群落. 土地利用和有毒元素一起塑造土壤微生物,对矿区生物修复至关重要.

科学领域:

环境科学环境科学
微生物学微生物学
地质化学地质化学

背景情况:

(Sb) 采矿释放出潜在的有毒元素 (PTEs),威胁生态系统和健康.
PTE对土壤微生物群落的影响以及它们在不同土地使用类型 (LUT) 上的适应性尚未得到充分理解.

研究的目的:

研究LUT如何影响微生物基因组适应在富含Sb的矿山土壤中的PTE.
了解在不同土地用途下,PTE和土壤微生物群落之间的相互作用机制.

主要方法:

在中国的Sb矿石带中,从废渣区 (SL),矿石场 (OS) 和蔬菜田 (FA) 采集了土壤样本.
分析包括PTE污染水平,微生物多样性 (α和β),社区结构和功能基因 (Sb抵抗).
随机森林分析被用来确定微生物多样性丧失的关键驱动因素.

主要成果:

PTE污染严重,在SL中缩因子最高,在FA中最低.
微生物α-多样性随着PTE水平的下降而增加 (FA > OS > SL),而β-多样性则由LUT聚集.
Pseudomonadota 占主导地位,具有 Sb 耐药性基因,并通过除毒与/碳固定相结合的解毒来调解 Sb 循环.

结论:

土地使用类型和PTE共同压力共同塑造土壤微生物社区结构和功能基因配置文件.
诸如Sphingomonas,Pseudomonas和Bradyrhizobium之类的关键类型与PTE (Sb,As,Pb) 有关.
结果为Sb采矿生态系统中的生物修复策略提供了洞察力.

关键词:

金矿石带是一种金矿石带.反抗功能基因的功能性基因.土地使用类型 (LUT)微生物社区结构是微生物的社区结构.可能有毒的元素 (PTEs)

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