Bio-amelioration of saline soil using Aeluropus littoralis, arbuscular mycorrhizal fungus (AMF), and salt-resistant PGPB | ||
| Journal of Agricultural Science and Technology | ||
| Articles in Press, Accepted Manuscript, Available Online from 01 January 2024 PDF (368.23 K) | ||
| Document Type: Original Research | ||
| Authors | ||
| Masoumeh Zarei; Elham Malekzadeh* ; Alireza Movahedi Naeini | ||
| Department of Soil Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| Abstract | ||
| This study aimed to evaluate the capability of the halophyte A. littoralis in symbiosis with Rhizophagus intraradices and Nocardia Halotolerans an indigenous bacterium of saline soils- on phytoextraction of Na under saline conditions. Salinity treatments included 0 (S0), 100 mM NaCl (S1), 200 mM NaCl (S2), 100 mM NaCl+50mM K2SO4 (S3), 200 mM NaCl+50mM K2SO4 (S4) levels. Plant fresh and dry weight, chlorophyll content decreased as salinity increased up to S2 level and increased thereafter. Plant root colonization in the inoculation and co-inoculation of AMF+SR-PGPB were similar. Compared to the S0 treatment, root colonization in the AMF group decreased by 23.5%, 32.6%, 13.5%, and 26.7% under S1, S2, S3, and S4 treatments, respectively. In the Bacteria+AMF group, the reduction was smaller, with decreases of 2.8%, 3.4%, and an increase of 6.8% and 1.4% under S1, S2, S3, and S4 treatments, respectively. These results indicate that co-inoculation with PGPB mitigated the negative effects of salinity on root colonization. The root and soil glomalin contents increased as salinity increased. Root glomalin in plants inoculated by AMF+SR-PGPB was more than in a single inoculation of AMF under salt stress. This study highlights the potential application of salt-tolerant bacteria and AMF as effective strategies for enhancing plant growth and productivity in saline environments, contributing to sustainable agricultural practices in affected regions. | ||
| Keywords | ||
| halophyte; mycorrhizal symbiosis; plant growth promoting traits; Phytoremediation; Salinity stress | ||
| References | ||
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