The unexpected concentration-dependent response of periphytic biofilm during indole acetic acid removal.

Biodegradation, Environmental Biofilms Ecosystem Indoleacetic Acids Plant Growth Regulators
Bioremediation Concentration-dependent effect Indole acetic acid Periphytic biofilm Plant growth regulators

Journal

Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523

Informations de publication

Date de publication:
May 2020
Historique:
received: 30 11 2019
revised: 24 01 2020
accepted: 25 01 2020
pubmed: 12 2 2020
medline: 27 2 2020
entrez: 12 2 2020
Statut: ppublish

Résumé

Due to its extensive application in agriculture as a germinating agent and growth promoter, indole acetic acid (IAA) is present in a variety of aquatic ecosystems. To explore the response of microbial aggregates to exogenous IAA in aquatic ecosystems, periphytic biofilm, a typical microbial aggregate, was exposed to IAA at different concentrations. Results reveal an unexpected concentration-dependent effect of IAA on periphytic biofilm. Concentrations of IAA less than 10 mg/L inhibit periphytic growth, but stimulate growth when the IAA concentration exceeds 50 mg/L. Periphytic biofilm adapts to different IAA concentrations by antioxidant enzyme activation, community structure optimization and carbon-metabolism pattern change, and promotes bioremediation of IAA contaminated water in the process. The removal rates of IAA reached up to 95%-100%. This study reveals the capacity of periphytic biofilm for IAA removal in practice.

Identifiants

DOI: 10.1016/j.biortech.2020.122922 PMID: 32044647
pubmed: 32044647
pii: S0960-8524(20)30191-7
doi: 10.1016/j.biortech.2020.122922
pii:
doi:

Substances chimiques

Indoleacetic Acids 0
Plant Growth Regulators 0
indoleacetic acid 6U1S09C61L

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

122922

Informations de copyright

Copyright © 2020 Elsevier Ltd. All rights reserved.

Déclaration de conflit d'intérêts

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.

Auteurs

Sichu Wang (S)

Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; College of Advanced Agricultural Science, University of Chinese Academy of Sciences, Beijing 100049, China.

Lan Ma (L)

Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; Agricultural Service Center of Qiandeng Town, 442 North Jingtang Road, Qiandeng Town, Kunshan 215300, China.

Ying Xu (Y)

Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.

Yu Wang (Y)

Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; School of Resources, Environmental & Chemical Engineering and Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, China.

Ningyuan Zhu (N)

Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China.

Junzhuo Liu (J)

Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China.

Jan Dolfing (J)

School of Engineering, Newcastle University, Newcastle NE1 7RU, United Kingdom.

Philip Kerr (P)

School of Biomedical Sciences, Charles Sturt University, Boorooma Street, Wagga Wagga, NSW 2678, Australia.

Yonghong Wu (Y)

Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; School of Engineering, Newcastle University, Newcastle NE1 7RU, United Kingdom. Electronic address: yhwu@issas.ac.cn.

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Classifications MeSH

questionsmedicales.fr › Environnement et santé publique › Santé publique › Pollution de l'environnement › Assainissement et restauration de l'environnement › Dépollution biologique de l'environnement › The unexpected concentration-dependent...
questionsmedicales.fr › Phénomènes microbiologiques › Biofilms › The unexpected concentration-dependent...
questionsmedicales.fr › Environnement et santé publique › Environnement › Écosystème › The unexpected concentration-dependent...
questionsmedicales.fr › Composés hétérocycliques › Composés hétérocycliques à cycles fusionnés › Composés hétérobicycliques › Indoles › Acides indolacétiques › The unexpected concentration-dependent...
questionsmedicales.fr › Actions chimiques et utilisations › Actions pharmacologiques › Effets physiologiques des médicaments › Substances de croissance › Facteur de croissance végétal › The unexpected concentration-dependent...