We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Symbiotic effectiveness and plant growh promoting traits in some Rhizobium strains isolated from Phaseolus vulgaris L.
- Authors
Abbaszadeh-dahaji, P.; Savaghebi, Gh.; Asadi-rahmani, H.; Rejali, F.; Farahbakhsh, M.; Moteshareh-zadeh, B.; Omidvari, M.; Lindstrom, K.
- Abstract
The ability of Rhizobia to colonize roots of certain legumes and promote their growth has been proven previously. In this study the symbiotic efficiency of 47 Rhizobium strains with 6 common bean cultivars was evaluated under greenhouse condition. Fourteen strains showed the best symbiotic efficiency, whereas some isolates could not induce nodules on host plants. The ability of fourteen superior strains to solubilize phosphorus and zinc and to produce auxin, HCN and siderohores was evaluated in the laboratory assays. Rhizobium strain Rb102 produced the highest amount of auxin (14.2 mg l) in the medium containing l-tryptophan. None of the isolates were able to solubilize ZnO and ZnCO on solid medium but in liquid medium some of them had negligible solubilization. The highest P solubility in liquid and solid medium was observed in strains Rb113 and Rb130, respectively. Strain Rb102 produced the highest amount of siderophores. None of the isolates were able to produce HCN. This study showed that there was a great diversity between the strains of Rhizobium in terms of their plant growth promoting traits symbiotic efficiency which supports the importance of screening rhizobia for selecting the most efficient strains. The genetic diversity of the isolates was analyzed by PCR-RFLP of the 16S rDNA. Our rhizobia were clustered into 10 groups showing high levels of diversity.
- Subjects
RHIZOBIUM; LEGUMES; SYMBIOSIS; COMMON bean; AUXIN; SIDEROPHORES; SOLUBILIZATION; ZINC
- Publication
Plant Growth Regulation, 2012, Vol 68, Issue 3, p361
- ISSN
0167-6903
- Publication type
Article
- DOI
10.1007/s10725-012-9724-0