Potential for Plant Growth Promotion of Rhizobacteria Associated with Salicornia Growing in Tunisian Hypersaline Soils
Joint Authors
Rolli, Eleonora
Mapelli, Francesca
Marasco, Ramona
Ouzari, Hadda
Guesmi, Amel
Barbato, Marta
Cherif, Hanene
Borin, Sara
Daffonchio, Daniele
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-28
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Soil salinity and drought are among the environmental stresses that most severely affect plant growth and production around the world.
In this study the rhizospheres of Salicornia plants and bulk soils were collected from Sebkhet and Chott hypersaline ecosystems in Tunisia.
Depiction of bacterial microbiome composition by Denaturing Gradient Gel Electrophoresis unveiled the occurrence of a high bacterial diversity associated with Salicornia root system.
A large collection of 475 halophilic and halotolerant bacteria was established from Salicornia rhizosphere and the surrounding bulk soil, and the bacteria were characterized for the resistance to temperature, osmotic and saline stresses, and plant growth promotion (PGP) features.
Twenty Halomonas strains showed resistance to a wide set of abiotic stresses and were able to perform different PGP activities in vitro at 5% NaCl, including ammonia and indole-3-acetic acid production, phosphate solubilisation, and potential nitrogen fixation.
By using a gfp-labelled strain it was possible to demonstrate that Halomonas is capable of successfully colonising Salicornia roots in the laboratory conditions.
Our results indicated that the culturable halophilic/halotolerant bacteria inhabiting salty and arid ecosystems have a potential to contribute to promoting plant growth under the harsh salinity and drought conditions.
These halophilic/halotolerant strains could be exploited in biofertilizer formulates to sustain crop production in degraded and arid lands.
American Psychological Association (APA)
Mapelli, Francesca& Marasco, Ramona& Rolli, Eleonora& Barbato, Marta& Cherif, Hanene& Guesmi, Amel…[et al.]. 2013. Potential for Plant Growth Promotion of Rhizobacteria Associated with Salicornia Growing in Tunisian Hypersaline Soils. BioMed Research International،Vol. 2013, no. 2013, pp.1-13.
https://search.emarefa.net/detail/BIM-1030225
Modern Language Association (MLA)
Mapelli, Francesca…[et al.]. Potential for Plant Growth Promotion of Rhizobacteria Associated with Salicornia Growing in Tunisian Hypersaline Soils. BioMed Research International No. 2013 (2013), pp.1-13.
https://search.emarefa.net/detail/BIM-1030225
American Medical Association (AMA)
Mapelli, Francesca& Marasco, Ramona& Rolli, Eleonora& Barbato, Marta& Cherif, Hanene& Guesmi, Amel…[et al.]. Potential for Plant Growth Promotion of Rhizobacteria Associated with Salicornia Growing in Tunisian Hypersaline Soils. BioMed Research International. 2013. Vol. 2013, no. 2013, pp.1-13.
https://search.emarefa.net/detail/BIM-1030225
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1030225