ENVIRONMENTAL STRESS RESISTANCES OF ROOT-NODULE BACTERIA FROM MEDICAGO FALCATE L.
<p>The symbiotic system of Legumes and root-nodule bacteria is a significant process for enriching barren and dry soils and supporting plant growth. The aim of this study was to isolate root-nodule bacteria from Medicago falcate and to select high activity strains with resistance to environmen...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Mongolian Academy of Sciences
2018-09-01
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| Series: | Proceedings of the Mongolian Academy of Sciences |
| Subjects: | |
| Online Access: | https://www.mongoliajol.info/index.php/PMAS/article/view/1005 |
| Summary: | <p>The symbiotic system of Legumes and root-nodule bacteria is a significant process for enriching barren and dry soils and supporting plant growth. The aim of this study was to isolate root-nodule bacteria from Medicago falcate and to select high activity strains with resistance to environmental stress. <br />As a result, only MSZ-25 strain grew in the medium containing 0.8M NaCl, with pH4.8-9.8 and at temperatures of 4-45°С. All rhizobial isolates were tolerant to the concentrations of 0.01-0.1% Pb(NO<sub>3</sub>)<sub>2</sub>, 0.01% ZnSO<sub>4</sub>, CdCI<sub>2</sub>, CuCI<sub>2</sub> and NiCI<sub>2</sub>. The strains were also resisted to penicillin 10μ/ml, erythromycin 10μ/ml, and chlorampenicol 10μ/ml but the growths of all isolates were inhibited by kanamycin 30μ/ml, novobiocin 30μ/ml and tetracycline 10μ/ml.</p> |
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| ISSN: | 2310-4716 2312-2994 |