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On the semisolid medium containing the vital dye Congo red, P. After being stab inoculated into the semisolid (0.4% agar) medium, all strains except CCM 1460 switched to collective swarming and formed concentric macrocolonies with different diameters, depending on the strain and the carbon source used. In the liquid medium, all strains except CCM 1460 were motile and swam by peritrichous flagella. polymyxa strains differing in exopolysaccharide yield and properties (CCM 1465, CCM 1460, CCM 1459 T, 88A, and 92) were investigated for motility in a liquid and a semisolid nutrient medium with either glucose or sucrose as the carbon source.
polymyxa adaptation to changing environmental conditions. These bacteria produce exopolysaccharides, which are very important for P. Paenibacillus polymyxa rhizobacteria associate with a wide range of plants and promote plant growth and development.
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