Effect of pH and NaCl Concentration on Benzoate Utilization of Anoxygenic Photosynthetic Bacteria

Abstract

l'otal geno~nic analysis of three anorygenic photosynthetic bacteria. 1)s-I, 1)s-4 and Cas-13, was done using hlaero-l~estrictiao Fragment 1,ength Polymorphism technique employing pulsecl-field gel electrophoresis. 'L'lie constructed pl~ylogenie trce of the profile analysis showed that DS-1 and Cas-I3 were closely related rattier than to 1)s- 4. l'l~eira bility to use benzoate as their sole C source were optirnr~rna t NaCI conce~~tratioonf 0.5% (wlv) and pll of 7.5. rcspcetivcly. The isolates could grow in benzoate-containing media r~p to 10 1nh1. Crowing in other C-sources was optimum in 3.0% casamino acid and 1.0% dertrine, but exhibited different response for otlier compounds.