Loading content, please wait..
loading..
Logo
Version 3.22
or
Publication Type J
Authors Jha, B., I. Gontia and A. Hartmann
Title The roots of the halophyte Salicornia brachiata are a source of new halotolerant diazotrophic bacteria with plant growth-promoting potential
Source Plant and Soil
Author Keywords 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase Acetylene reduction Halotolerant IAA production Plant growth-promoting rhizobacteria (PGPR) Salicornia acc deaminase genes nitrogen-fixation rhizosphere bacteria salt-tolerant sp nov. systemic resistance azospirillum rice identification strain
Abstract Soil salinity is the major cause limiting plant productivity worldwide. Nitrogen-fixing bacteria were enriched and characterised from roots of Salicornia brachiata, an extreme halophyte which has substantial economic value as a bioresource of diverse and valuable products. Nitrogen-free semisolid NFb medium with malate as carbon source and up to 4% NaCl were used for enrichment and isolation of diazotrophic bacteria. The isolates were tested for plant growth-promoting traits and 16S rRNA, nifH and acdS genes were analysed. For selected strains, plant growth-promoting activities were tested in axenically grown Salicornia seedlings at different NaCl concentrations (0-0.5M). New halotolerant diazotrophic bacteria were isolated from roots of S. brachiata. The isolates were identified as Brachybacterium saurashtrense sp. nov., Zhihengliuella sp., Brevibacterium casei, Haererehalobacter sp., Halomonas sp., Vibrio sp., Cronobacter sakazakii, Pseudomonas spp., Rhizobium radiobacter, and Mesorhizobium sp. Nitrogen fixation as well as plant growth-promoting traits such as indole acetic acid (IAA) production, phosphate solubilisation, and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity were demonstrated. For Brachybacterium saurashtrense and Pseudomonas sp., significant plant growth-promoting activities were observed in Salicornia in salt stress conditions. Salicornia brachiata is a useful source of new halotolerant diazotrophic bacteria with plant growth-promoting potential.
Author Address [Jha, Bhavanath; Gontia, Iti] CSIR Cent Salt & Marine Chem Res Inst, Discipline Marine Biotechnol & Ecol, Bhavnagar 364021, Gujarat, India. [Hartmann, Anton] German Res Ctr Environm Hlth GmbH, Helmholtz Zentrum Muenchen, Dept Microbe Plant Interact, D-85764 Neuherberg, Germany. Jha, B (reprint author), CSIR Cent Salt & Marine Chem Res Inst, Discipline Marine Biotechnol & Ecol, GB Marg, Bhavnagar 364021, Gujarat, India bjha@csmcri.org
ISSN 0032-079X
ISBN 0032-079X
29-Character Source Abbreviation Plant Soil
Publication Date Jul
Year Published 2012
Volume 356
Issue 1-2
Beginning Page 265-277
Digital Object Identifier (DOI) 10.1007/s11104-011-0877-9
Unique Article Identifier WOS:000305528500020
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed