Initial Identification of an Manganese Resistant Microorgnism

On the basis of the systematic investigation of manganese tolerating plants which grew in Xiangtan manganese tailings, rhizosphere soils of Chenopodium album Linn were collected. 1 yellow manganese-resistant strain numbered XY was isolated from the rhizosphere of fresh plant through concentration gradient screening technique, and the cellular form, physiological and biochemical tests were conducted, as the growth curve and effects of temperature, pH, NaCl concentration to growth of the strain tested were investigated. The results of the tests showed that 1) the strain reached logarithmic phase in 10-12h; 2) the optimal temperature range of the strain was 35°C-40°C; 3) the optimal pH range of the strain was 7.0-7.3; 4) the optimal NaCl concentration range of the strain was 10g/L.The status of the strain XY in the taxonomy and phylogeny has been conformed according to 16S rDNA sequences, the strainXY belongs to Planococcus genus.