Negative effects of Phaeocystis globosa on microalgae  

作　　者：刘洁生 VAN RIJSSEL Marion 杨维东 彭喜春 吕颂辉 王艳 陈菊芳 王朝晖 齐雨藻 

机构地区：[1]College of Life Sciences and Technology,Jinan University [2]Department of Marine Biology,University of Groningen [3]Research Center for Harmful Algae and Aquatic Environments,Jinan University

出　　处：《Chinese Journal of Oceanology and Limnology》2010年第4期911-916,共6页中国海洋湖沼学报（英文版）

基　　金：Supported by the NSFC-Guangdong Province Association Foundation(No.U0733006);the National Natural Science Foundation of China(No.30970502);the State Key Laboratory of Marine Environmental Science(Xiamen University MEL0403)

摘　　要：The potential allelopathic effects of the microalga,Phaeocystis globosa Scherffel,on three harmful bloom algae,Prorocentrum donghaiense Lu,Chattonella marina(Subrahmanyan) Hara et Chihara and Chattonella ovata Hara et Chihara were studied.The growth of C.marina and C.ovata was markedly reduced when the organisms were co-cultured with P.globosa or cultured in cell-free spent medium.Haemolytic extracts from P.globosa cells in the senescence phase had a similar inhibitory effect on the three harmful bloom algae.However,P.globosa had less influence on the brine shrimp,Artemia salina.These results indicate that P.globosa may have an allelopathic effect on microalgae,which would explain the superior competitive abilities of P.globosa.Because the addition of the haemolytic toxins from P.globosa had similar effects on algae as spent media,these compounds may be involved in the allelopathic action of P.globosa.The potential allelopathic effects of the microalga,Phaeocystis globosa Scherffel,on three harmful bloom algae,Prorocentrum donghaiense Lu,Chattonella marina（Subrahmanyan） Hara et Chihara and Chattonella ovata Hara et Chihara were studied.The growth of C.marina and C.ovata was markedly reduced when the organisms were co-cultured with P.globosa or cultured in cell-free spent medium.Haemolytic extracts from P.globosa cells in the senescence phase had a similar inhibitory effect on the three harmful bloom algae.However,P.globosa had less influence on the brine shrimp,Artemia salina.These results indicate that P.globosa may have an allelopathic effect on microalgae,which would explain the superior competitive abilities of P.globosa.Because the addition of the haemolytic toxins from P.globosa had similar effects on algae as spent media,these compounds may be involved in the allelopathic action of P.globosa.

关 键 词：Phaeocystis globosa ALLELOPATHY haemolytic toxin 

分 类 号：Q945[生物学—植物学]