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Bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil

BACKGROUND: Water stress is a critical issue for plant growth in arid sandy soils. Here, we aimed to select bacteria producing polyextremotolerant surface-active compounds capable of improving water retention and humidity uptake in sandy soils. RESULTS: From Tunisian desert and saline systems, we se...

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Autores principales: Raddadi, Noura, Giacomucci, Lucia, Marasco, Ramona, Daffonchio, Daniele, Cherif, Ameur, Fava, Fabio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5984429/
https://www.ncbi.nlm.nih.gov/pubmed/29855369
http://dx.doi.org/10.1186/s12934-018-0934-7
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author Raddadi, Noura
Giacomucci, Lucia
Marasco, Ramona
Daffonchio, Daniele
Cherif, Ameur
Fava, Fabio
author_facet Raddadi, Noura
Giacomucci, Lucia
Marasco, Ramona
Daffonchio, Daniele
Cherif, Ameur
Fava, Fabio
author_sort Raddadi, Noura
collection PubMed
description BACKGROUND: Water stress is a critical issue for plant growth in arid sandy soils. Here, we aimed to select bacteria producing polyextremotolerant surface-active compounds capable of improving water retention and humidity uptake in sandy soils. RESULTS: From Tunisian desert and saline systems, we selected eleven isolates able to highly emulsify different organic solvents. The bioemulsifying activities were stable with 30% NaCl, at 4 and 120 °C and in a pH range 4–12. Applications to a sandy soil of the partially purified surface-active compounds improved soil water retention up to 314.3% compared to untreated soil. Similarly, after 36 h of incubation, the humidity uptake rate of treated sandy soil was up to 607.7% higher than untreated controls. CONCLUSIONS: Overall, results revealed that polyextremotolerant bioemulsifiers of bacteria from arid and desert soils represent potential sources to develop new natural soil-wetting agents for improving water retention in arid soils. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s12934-018-0934-7) contains supplementary material, which is available to authorized users.
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spelling pubmed-59844292018-06-07 Bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil Raddadi, Noura Giacomucci, Lucia Marasco, Ramona Daffonchio, Daniele Cherif, Ameur Fava, Fabio Microb Cell Fact Research BACKGROUND: Water stress is a critical issue for plant growth in arid sandy soils. Here, we aimed to select bacteria producing polyextremotolerant surface-active compounds capable of improving water retention and humidity uptake in sandy soils. RESULTS: From Tunisian desert and saline systems, we selected eleven isolates able to highly emulsify different organic solvents. The bioemulsifying activities were stable with 30% NaCl, at 4 and 120 °C and in a pH range 4–12. Applications to a sandy soil of the partially purified surface-active compounds improved soil water retention up to 314.3% compared to untreated soil. Similarly, after 36 h of incubation, the humidity uptake rate of treated sandy soil was up to 607.7% higher than untreated controls. CONCLUSIONS: Overall, results revealed that polyextremotolerant bioemulsifiers of bacteria from arid and desert soils represent potential sources to develop new natural soil-wetting agents for improving water retention in arid soils. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s12934-018-0934-7) contains supplementary material, which is available to authorized users. BioMed Central 2018-05-31 /pmc/articles/PMC5984429/ /pubmed/29855369 http://dx.doi.org/10.1186/s12934-018-0934-7 Text en © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research
Raddadi, Noura
Giacomucci, Lucia
Marasco, Ramona
Daffonchio, Daniele
Cherif, Ameur
Fava, Fabio
Bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil
title Bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil
title_full Bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil
title_fullStr Bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil
title_full_unstemmed Bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil
title_short Bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil
title_sort bacterial polyextremotolerant bioemulsifiers from arid soils improve water retention capacity and humidity uptake in sandy soil
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5984429/
https://www.ncbi.nlm.nih.gov/pubmed/29855369
http://dx.doi.org/10.1186/s12934-018-0934-7
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