title: Effects of phosphorus concentration on the growth and enzyme production of Phanerochaete chrysosporium.
abstract: The effects of different phosphorus concentrations in culture media on the growth and enzyme production of Phanerochaete chrysosporium was investigated at a glucose concentration of 10 g L(-1). The results showed that the optimal KH(2)PO(4) concentration was 2.0 g L(-1). Optimal phosphorus content not only supported robust growth of P. chrysosporium, but also helped produce higher yields of manganese-dependent peroxidase (MnP) (324.9 U L(-1)). In addition, the results revealed that a relationship between the consumption of total phosphorus (TP) and fungal growth and enzyme production existed in P. chrysosporium cultures. Over a range of 0-0.5 g L(-1) KH(2)PO(4) concentration in the medium, the biomass and MnP activity increased in proportion to phosphorus concentration. When the KH(2)PO(4) concentration reached 0.5 g L(-1), it was generally found that the increase in biomass gradually slowed down, while MnP production decreased greatly with an increase in phosphorus concentration.
authors.affiliation: School of Forestry, Northeast Forestry University, Harbin 150040, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Liang
authors.forename: Da-Wen
authors.initials: DW
authors.lastname: Gao
authors.forename: Yong-Gang
authors.initials: YG
authors.lastname: Zeng
mesh_terms: D006863:Hydrogen-Ion Concentration; D020075:Phanerochaete / Q000201:enzymology* / Q000254:growth & development; D010758:Phosphorus / Q000032:analysis*
chemical_list: D010758:Phosphorus