Harmful algal bloom-forming dinofl agellate Prorocentrum donghaiense inhibits the growth and photosynthesis of seaweed Sargassum fusiformis embryos

作     者：Caixia WANG Min WANG Binbin CHEN Wenli QIN Lidong LIN Chuanjun DAI Hengguo YU Renhui LI Min ZHAO Zengling MA Caixia WANG;Min WANG;Binbin CHEN;Wenli QIN;Lidong LIN;Chuanjun DAI;Hengguo YU;Renhui LI;Min ZHAO;Zengling MA

作者机构：Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources ProtectionWenzhou UniversityWenzhou 325035China National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water PollutionWenzhou UniversityWenzhou 325035China Dongtou Fisheries Science and Technology Research InstituteWenzhou 325700China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2021年第39卷第6期

页      面：2237-2251页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：Supported by the National Key R&D Program of China(No.2018YFD0901500) the National Natural Science Foundation(Nos.41876124,61871293,41706147,42007372) 

主　　题：embryo JIP-test photosynthesis Prorocentrum donghaiense Sargassum fusiformis harmful algal bloom 

摘      要：Harmful algal bloom(HAB)is an ecological disaster to local *** present,its impact on macrophytes has not been well *** this study,we cultivated sexually propagated embryos of S argassum fusiformis-an edible seaweed-in Prorocentrum donghaiense suspensions at different cell densities(0,0.50×10^(5),0.75×10^(5),1.00×10^(5),and 1.50×10^(5) cells/mL)for 10 days,during which growth and photosynthetic activities of the embryos were determined,and a monocultivation was set up for *** show that the relative growth rate and photosynthetic activities of the embryos co-cultivated with *** were inhibited mostly and significantly in the cell densities of 0.75×10^(5),1.00×10^(5),and 1.50×10^(5) cells/mL,and the inhibitory effects increased in overall with increased cell *** maximum relative electron transport rates(rETR max)and apparent photosynthetic efficiency(a)of co-cultivated embryos were all significantly lower than monocultivation ones on the 10 th ***,the photosynthetic activity detected by chlorophyll-a fluorescence transient(i.e.,OJIP),the electron transport among electron transfer accepters of PSII(photosystem II)and that from PSII to PSI(photosystem I)was restricted,which is probably responsible for the decreases of rETR max andain the co-cultivated *** addition,parts of the photosynthetic reaction centers of PSII in the co-cultivated embryos were ***,*** bloom could restrain the development and photosynthetic activities of *** embryos,reduce the seedlings stock,and eventually hinder the development of *** production industry.