title: [ALPase activity and the distribution of phosphate solubilizing bacteria and the relationship between them in sediments of Lake Taihu].
abstract: The abundance of phosphate solubilizing bacteria, together with the alkaline phosphatase (ALPase) activity in the sediment samples of Lake Taihu in different seasons, sites and depths, was analyzed. And the relationship between the distribution of phosphate solubilizing bacteria and the ALPase activity was discussed. Results show that phosphate solubilizing bacteria is universally detected in surface sediments. With the increasing depth, the amount of phosphate solubilizing bacteria decreases. The number of phosphate solubilizing bacteria strains reaches the maximum in autumn while the minimum in winter. ALPase activity ranges from 0.001 mmol (g x min)(-1) to 0.006 mmol (g x min)(-1) and it varies with different sites and seasons and declines with the increasing depth. ALPase activity varies widely above 12cm, and stabilizes about 0.001 mmol x (g x min)(-1) under 12 cm in each site. There is a correlation between ALPase activity and the number of phosphate solubilizing bacteria and the correlation coefficients range from 0.50 to 0.85.
authors.affiliation: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China. swing_402@163.com
authors.forename: Wei
authors.initials: W
authors.lastname: Song
authors.forename: Li-na
authors.initials: LN
authors.lastname: Yuan
authors.forename: Lin
authors.initials: L
authors.lastname: Xiao
authors.forename: Zhong
authors.initials: Z
authors.lastname: Zhan
authors.forename: Liu-yan
authors.initials: LY
authors.lastname: Yang
authors.forename: Li-juan
authors.initials: LJ
authors.lastname: Jiang
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism*; D001419:Bacteria / Q000254:growth & development / Q000302:isolation & purification / Q000378:metabolism*; D002681:China; D005618:Fresh Water / Q000032:analysis; D019015:Geologic Sediments / Q000737:chemistry / Q000382:microbiology*; D010710:Phosphates / Q000737:chemistry / Q000378:metabolism*; D012621:Seasons; D012995:Solubility; D014871:Water Microbiology
chemical_list: D010710:Phosphates; D000469:Alkaline Phosphatase