Root Bacteria Recruited by Phragmites australis in Constructed Wetlands Have the Potential to Enhance Azo-Dye Phytodepuration

The microbiome associated with plants used in phytodepuration systems can boost plant growth and services, especially in ecosystems dealing with recalcitrant compounds, hardly removed via traditional wastewater (WW) treatments, such as azo-dyes used in textile industry. In this context, we aimed to study the cultivable microbiome selected by Phragmites australis plants in a Constructed Wetland (CW) in Morocco, in order to obtain candidate inoculants for the phytodepuration of azo-dye contaminated WW. A collection of 152 rhizospheric and endophytic bacteria was established. The strains were phylogenetically identified and characterized for traits of interest in the phytodepuration context. All strains showed Plant Growth Promotion potential in vitro and 67% of them significantly improved the growth of a model plant in vivo compared to the non bacterized control plants. Moreover, most of the isolates were able to grow in presence of several model micropollutants typically found in WW, indicating their potential use in phytodepuration of a wide spectrum of effluents. The six most promising strains of the collection were tested in CW microcosms alone or as consortium: the consortium and two single inocula demonstrated to significantly increase the removal of the model azo-dye Reactive Black 5 compared to the non bacterized controls.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:7

Enthalten in:

Microorganisms - 7(2019), 10 vom: 24. Sept.

Sprache:

Englisch

Beteiligte Personen:

Riva, Valentina [VerfasserIn]
Mapelli, Francesca [VerfasserIn]
Syranidou, Evdokia [VerfasserIn]
Crotti, Elena [VerfasserIn]
Choukrallah, Redouane [VerfasserIn]
Kalogerakis, Nicolas [VerfasserIn]
Borin, Sara [VerfasserIn]

Links:

Volltext

Themen:

Azo-dye decolorization
Journal Article
Juncus acutus
Micropollutants
Plant growth promoting bacteria
Reactive black-5
Wastewater treatment

Anmerkungen:

Date Revised 30.09.2020

published: Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.3390/microorganisms7100384

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM301619816