三角褐指藻与东海原甲藻间的他感作用研究

本文主要探究了东海原甲藻(Prorocentrum donghaiense)与三角褐指藻(Phaeodactylum tricornutum)之间的他感作用。在实验室模拟条件下,分别研究了添加比例为10%、40%、60%、90%、100%的三角褐指藻无藻细胞滤液的培养基对东海原甲藻生长的影响,以及相同比例的东海原甲藻无藻细胞滤液培养基对三角褐指藻生长的影响。结果表明,低浓度三角褐指藻滤液对东海原甲藻(P.donghaiense)的生长表现为促进作用,高浓度则抑制其生长,因此,不同浓度的三角褐指藻藻液对东海原甲藻生长表现出两种相反的他感作用效果;而东海原甲藻滤液对三角褐指藻(P.tricornutum)的生长没有显著影响,说明东海原甲藻并未对三角褐指藻表现出他感作用。

Allelopathic effects between Phaeodactylum tricornutum and Prorocentrum donghaiense

The primary aim of this study was to explore and compare the allelopathic effects between Prorocentrum donghaiense and Phaeodactylum tricornutum. Using experimental conditions simulating the natural environment, we investigated the effects of different ratios (10%, 40%, 60%, 90%, and 100%) of cell-free filtrates of P. tricornutum on the growth of P. donghaiense and the effects of the same cell-free filtrate ratios of P. donghaiense on the growth of P. tricornutum. Results demonstrated that the growth of P. donghaiense increased at low concentrations of cell-free filtrates of P. tricornutum, whereas high concentrations of cell-free filtrates of P. tricornutum inhibited the growth of P. donghaiense. This implied that P. tricornutum with different biomass had two opposite effects on the growth of P. donghaiense.The filtrate of P. donghaiense had no effect on the growth of P. tricornutum, indicating that the allelopathic effect of P. donghaiense on P. tricornutum was not significant.