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dc.contributorFilali-Maltouf, Abdelkarimen_US
dc.contributorFahde, Saraen_US
dc.contributorEn-nahli, Younessen_US
dc.contributorBoughribil, Saiden_US
dc.contributorAgrawal, Shiv Kumaren_US
dc.contributorAmri, Ahmeden_US
dc.creatorsijilmassi, badreddineen_US
dc.identifier.citationBadreddine sijilmassi, Abdelkarim Filali-Maltouf, Sara Fahde, Youness En-nahli, Said Boughribil, Shiv Kumar Agrawal, Ahmed Amri. (13/7/2020). In-Vitro Plant Growth Promotion of Rhizobium Strains Isolated from Lentil Root Nodules under Abiotic Stresses. Agronomy, 10 (7).en_US
dc.description.abstractPlant growth-promoting rhizobia are known to improve crop performance by multiple mechanisms. However, the interaction between host plants and Rhizobium strains is highly influenced by growing conditions, e.g., heat, cold, drought, soil salinity, nutrient scarcity, etc. The present study was undertaken to assess the use of Rhizobium as plant growth promoters under abiotic stress conditions. Fifteen Rhizobium strains isolated from lentil root nodules were tested for phosphate solubilization activity (PSA) and phytohormones production under salt and drought conditions. The results showed that 15 Rhizobium strains were significant phosphate solubilizers, and indole acedic acid (IAA) and gibberellic acid (GA3) producers based on least significant difference (LSD) analysis (p ≤ 0.05). The highest rate of PSA was attributed to three strains namely, 1145N5, 1159N11, and 1159N32 with a range of 144.6 to 205.6 P2O5 (µg/mL). The highest IAA production was recorded in the strain 686N5 with 57.68 ± 4.25 µg/mL as compared to 50.8667 ± 1.41 µg/mL and 37.32 ± 12.59 µg/mL for Rhizobium tropici CIAT 899 and Azospirillum brasilense DSM-1690, respectively. Strain 318N2111 produced 329.24 ± 7.84 µg/mL of GA3 as against 259.84 ± 25.55 µg/mL for A. brasilense DSM-1690. R. tropici CIAT 899 showed tolerance to salt (5% NaCl) and drought (ψ = −2.6 MPa) stress, whereas strain 686N5 showed an extremely high level of salt-tolerance (5% NaCl) and moderate level of drought tolerance (ψ = −0.75 MPa). These results indicate different pathways for drought and salt tolerance mechanisms. The assessment of plant growth promoting (PGP) activities of Rhizobium showed differences between bacterial viability and bacterial PGP activity in terms of abiotic stress tolerance where bacterial PGP activity is interrupted before reaching the bacterial tolerance threshold. These results integrate a new concept of PGPR screening based on PGP activity under abiotic stress.en_US
dc.subjectplant growth promotionen_US
dc.subjectphosphate solubilizationen_US
dc.subjectindole acetic aciden_US
dc.titleIn-Vitro Plant Growth Promotion of Rhizobium Strains Isolated from Lentil Root Nodules under Abiotic Stressesen_US
dc.typeJournal Articleen_US
cg.creator.idsijilmassi, badreddine: 0000-0002-7642-8201en_US
cg.creator.idAgrawal, Shiv Kumar: 0000-0001-8407-3562en_US
cg.creator.idAmri, Ahmed: 0000-0003-0997-0276en_US
cg.subject.agrovocdrought stressen_US
cg.subject.agrovocsalt stressen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerMohammed V University - UM5en_US
cg.contributor.centerUniversité Hassan II Mohammedia Casablanca - UHIIen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionNorthern Africaen_US
cg.isijournalISI Journalen_US
dc.identifier.statusOpen accessen_US

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