[Allelopathic Effects and Allelochemicals of on and ].

The allelopathic effects of on algal growth were investigated and potential allelochemicals secreted by were analyzed. were co-cultivated with different initial concentrations (10, 10, 10, 10, and 10 ind.·L) of and . The optical density of each group was measured daily. The results showed that 2.5 g·(200 mL) of has significant inhibition effect on growth with initial concentrations of 10 ind.·L and 10 ind.·L. However, there was no significant inhibition on the growth of . Through solvent extraction and GC-MS analysis, hexadecanoic acid was extracted and determined as an allelochemical in . Additionally, three potentially novel allelochemical compounds secreted by were determined as follows:3-ethyl-3-methylheptane, triethyl phosphate and dibutyl phthalate.