Toxicity and decomposition activity inhibition of VO 2 micro/nanoparticles to white rot fungus Phanerochaete chrysosporium.

Autor: Zhang Q; Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China; Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China., Yuan Y; Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China. Electronic address: smileyuan1987@swun.edu.cn., Hu Y; Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China., Lu RL; Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China., Wang X; Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China., Zhong Q; Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China., Wu X; Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China., Wang H; Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China. Electronic address: hwang@shu.edu.cn., Yang ST; Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China. Electronic address: yangst@swun.edu.cn.
Jazyk: angličtina
Zdroj: NanoImpact [NanoImpact] 2024 Oct; Vol. 36, pp. 100528. Date of Electronic Publication: 2024 Sep 01.
DOI: 10.1016/j.impact.2024.100528
Abstrakt: Vanadium dioxide (VO 2 ) is an excellent phase transition material widely used in various applications, and thus inevitably enters the environment via different routes and encounters various organisms. Nonetheless, limited information is available on the environmental hazards of VO 2 . In this study, we investigated the impact of two commercial VO 2 particles, nanosized S-VO 2 and micro-sized M-VO 2 on the white rot fungus Phanerochaete chrysosporium. The growth of P. chrysosporium is significantly affected by VO 2 particles, with S-VO 2 displaying a higher inhibitory effect on weight gain. In addition, VO 2 at high concentrations inhibits the formation of fungal fibrous hyphae and disrupts the integrity of fungus cells as evidenced by the cell membrane damage and the loss of cytoplasm. Notably, at 200 μg/mL, S-VO 2 completely alters the morphology of P. chrysosporium, while the M-VO 2 treatment does not affect the mycelium formation of P. chrysosporium. Additionally, VO 2 particles inhibit the laccase activity secreted by P. chrysosporium, and thus prevent the dye decoloration and sawdust decomposition by P. chrysosporium. The mechanism underlying this toxicity is related to the dissolution of VO 2 and the oxidative stress induced by VO 2 . Overall, our findings suggest that VO 2 nanoparticles pose significant environmental hazards and risks to white rot fungi.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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