Phytoremediation is an expanding field of
research in environmental studies due to the benefits of its cost effectiveness
and environmental friendliness. The use of this technology in saline and
alkaline soils can be a promising approach because soil salinity inhibits crop
growth and causes tremendous yield losses in many regions of the world,
especially in arid and semi-arid regions. However, little is known about the
plants that can be applicable in the phytoremediation of saline soils and role
of their rhizobacteria in the phytoremediation processes. In this study, we
examined sodium (Na) uptake by the halophyte Salsola grandis and screened Na resistant rhizobacteria inhabiting
in an extremely saline soil environment. S.
grandis could uptake Na at the value of 15447 mg·kg-1
and transported Na to stem and leaves from roots. We found that 50 out of the
131 strains were Na resistant and 8 out of these 50 strains contributed to the
growth of S. grandis. Using 16S
ribosomal RNA sequencing, we determined these eight strains to be within the
genera Arthrobacter spp. and Bacillus spp. Moreover, four of the
eight strains (A22, WP5, B14, AP20) showed traits of being both siderophore and
indole-3-acetic acid producers. Therefore, these eight strains appear to be
suitable candidates for plant growth-promoting rhizobacteria of S. grandis.
Primary Language | English |
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Journal Section | Articles |
Authors | |
Publication Date | July 1, 2017 |
Published in Issue | Year 2017 Volume: 6 Issue: 3 |