Identification and Characterization of Metabolic Potential of Different Strains from Genus Rhizobium
Abstract
Bacteria of the Rhizobium genus form a group of microorganisms existing in the environment in two forms: symbiotic, in the root nodules of Fabaceae sp. plants and free-living, and saprophytic in the soil environment. The subject of this study was genetic identification and characterization of metabolic activity of different strains from Rhizobium genus bacteria. The study was conducted on the 16 bacteria strains from the collection of the Department of Agricultural Microbiology, Institute of Soil Science and Plant Cultivation in Puławy, Poland. Based on the sequencing of PCR products, we found that all strains belong to one species—Rhizobium leguminosarum. The study of metabolic activity was performed using the GEN III BIOLOG system method (Biolog Inc., Hayward, CA, USA). Metabolism analysis of all R. leguminosarum strains with the use of GEN III™ plates showed that carbohydrates (CH) were the most intensively utilised group of substrates. Between the Rhizobium leguminosarum strains, there are metabolic differences in terms of the studied features.
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