The effect of signal molecular produced by attached bacteria on the Microsystis aeruginosa phosphorus metabolism
附生假单胞菌信号分子对铜绿微囊藻磷代谢的影响

The effect of signal molecular(SM)produced by attached bacteria Pseudomonas sp. X on the Microsystis aeruginosa growth and phosphorus metabolism was studied. The experimental results showed that the signal molecular could inhibit the growth of M.aureginosa in high density, and accelerate its death in low density, but it could not inhibit the M. aeruginosa's absorption of phosphorus from water. And the signal molecular also could promote the accumulation of phosphorus in M. aureginosa in its decline period. These results indicated that signal molecular produced by attached bacteria could affect the growth and phosphorus metabolism of Microsystis aeruginosa in low concentration.