Stimulating effects of reduced graphene oxide on the growth and nitrogen fixation activity of nitrogen-fixing bacterium Azotobacter chroococcum.

Azotobacter / metabolism Graphite / metabolism Nitrogen / metabolism Nitrogen Fixation
Environmental effects Graphene Nitrogen fixing bacteria Stimulation Toxicity

Journal

Chemosphere
ISSN: 1879-1298
Titre abrégé: Chemosphere
Pays: England
ID NLM: 0320657

Informations de publication

Date de publication:
May 2022
Historique:
received: 08 11 2021
revised: 18 01 2022
accepted: 18 01 2022
pubmed: 24 1 2022
medline: 9 3 2022
entrez: 23 1 2022
Statut: ppublish

Résumé

Graphene has found important applications in various areas and hundred tons of graphene materials are annually produced. It is crucial to investigate both the negative and positive environmental effects of graphene materials to ensure the safe applications and develop environmental applications. In this study, we reported the stimulating effects of reduced graphene oxide (RGO) to nitrogen-fixing bacterium Azotobacter chroococcum. RGO stimulated the cell growth of A. chroococcum at 0.010-0.500 mg/mL according to the growth curves and the colony-forming unit (CFU) increases. RGO wrapped over the A. chroococcum cells without inducing ultrastructural changes. RGO decreased the leakage of cell membrane, but slight oxidative stress was observed in A. chroococcum. RGO promoted the nitrogen fixation activity of A. chroococcum at 0.5 mg/mL according to both isotope dilution method and acetylene reduction activity measurements. Consequently, the increases of soil nitrogen contents were evidenced, in particular about 30% increase of organic nitrogen occurred at 0.5 mg/mL of RGO. In addition, RGO might possibly benefit the plant growth through enhancing the indoleacetic acid production of A. chroococcum. These results highlighted the positive environmental effects of graphene materials to nitrogen-fixing bacteria in nitrogen cycle.

Identifiants

DOI: 10.1016/j.chemosphere.2022.133702 PMID: 35066073
pubmed: 35066073
pii: S0045-6535(22)00195-3
doi: 10.1016/j.chemosphere.2022.133702
pii:
doi:

Substances chimiques

graphene oxide 0
Graphite 7782-42-5
Nitrogen N762921K75

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

133702

Informations de copyright

Copyright © 2022 Elsevier Ltd. All rights reserved.

Auteurs

Peng Ouyang (P)

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.

Chengzhuang Liang (C)

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.

Fangshi Liu (F)

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.

Qian Chen (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.

Ziqiao Yan (Z)

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.

Junyao Ran (J)

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.

Shiyu Mou (S)

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.

Yue 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.

Xian 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; Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China.

Sheng-Tao 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; Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, China. Electronic address: yangst@swun.edu.cn.

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Classifications MeSH

questionsmedicales.fr › Bactéries › Proteobacteria › Gammaproteobacteria › Pseudomonadaceae › Azotobacter › Stimulating effects of reduced graphene oxide...
questionsmedicales.fr › Produits chimiques inorganiques › Minéraux › Graphite › Stimulating effects of reduced graphene oxide...
questionsmedicales.fr › Produits chimiques inorganiques › Gaz › Azote › Stimulating effects of reduced graphene oxide...
questionsmedicales.fr › Phénomènes biologiques › Phénomènes écologiques et environnementaux › Cycle de l'azote › Fixation de l'azote › Stimulating effects of reduced graphene oxide...