The response mechanisms of a newly isolated vanadium-tolerant Priestia aryabhattai ST-1 to pentavalent vanadium: Evidence from transcriptomic analysis

IF 10.6 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2026-07-01 Epub Date: 2026-05-05 DOI:10.1016/j.jhazmat.2026.142285

Hua Tang , Yi Huang , Qian Deng , Zhijian Shi , Xinpeng Wang , Weiwei Xie , Renfu Wang

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引用次数: 0

Abstract

The environmental risks posed by highly toxic pentavalent vanadium [V(V)] have drawn widespread attention. However, the mechanisms underlying the reduction and tolerance of V(V) by indigenous microorganisms in high-background vanadium(V) mining areas remain unclear. This study isolated Priestia aryabhattai, a previously unreported, highly vanadium-tolerant strain, from soils in a high-background V region in Panzhihua, China. Under conditions without exogenous electron donors, this strain achieved a reduction rate of 40.98 ± 1.00% at an initial V(V) concentration of 100 mg/L within 48 h. X-ray photoelectron spectroscopy (XPS) analysis revealed that tetravalent vanadium [V(IV)] constituted as much as 67.51% of the reduction products. Furthermore, this study first demonstrated that the strain responds to V(V) stress by inducing spore formation, revealing a novel microbial tolerance mechanism under V(V) stress. This research uncovers a novel tolerance mechanism for native strains against V pollution, providing new insights and a theoretical foundation for microbial remediation of V contamination.

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新分离的耐钒Priestia aryabhattai ST-1对五价钒的反应机制：来自转录组学分析的证据。

高毒性五价钒[V(V)]的环境风险引起了广泛关注。然而，高背景钒矿区本地微生物对钒(V)的还原和耐受机制尚不清楚。本研究从攀枝花高背景V区土壤中分离出一种以前未报道的高耐钒菌株Priestia aryabhattai。在无外源电子给体的条件下，该菌株在初始V(V)浓度为100 mg/L时，在48 h内还原率为40.98 ± 1.00%。x射线光电子能谱（XPS）分析表明，四价钒[V(IV)]占还原产物的67.51%。此外，本研究首次证实该菌株通过诱导孢子形成对V(V)胁迫做出响应，揭示了一种新的V(V)胁迫下的微生物耐受机制。本研究揭示了本地菌株对V污染的一种新的耐受机制，为V污染的微生物修复提供了新的见解和理论基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.