Identification of a marine woloszynskioid dinoflagellate Biecheleriopsis adriatica and germination of its cysts from southern Chinese coasts  

作　　者：Wei Kang Zhao-Hui Wang 

机构地区：[1]Key and Open Laboratory of Marina and Estuary Fisheries, Ministry of Agriculture of China, East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences [2]College of Life Science and Technology, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes,Jinan University [3]Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education

出　　处：《Journal of Environmental Sciences》2018年第4期246-254,共9页环境科学学报（英文版）

基　　金：was supported by the National Natural Foundation of China (Nos. 41276154, 41476132)

摘　　要：A strain of small-sized dinoflagellates, isolated from the culture of sediment incubation collected from the coastal areas in southern China, has been identified under microscopical observation and r DNA sequence. Surface sediments from two sea areas in the southern Chinese coastal waters were incubated for 20 and 40 days, and germinated vegetative cells were observed. The cells were identified as species in the Suessiaceae based on the morphological characteristics, ultrastructural features of the cell, as well as its swimming behavior. The studied strain clusters into a well-supported clade together with six sequences of Biecheleriopsis adriatica in the phylogenetic tree based on the large subunit（LSU） rDNA sequence. Therefore, the strain has been identified as B. adriatica based on morphological observation and phylogenetic analysis. B. adriatica was the dominant dinoflagellate species in the germinated phytoplankton community from both sea areas,which contributed 50%–83% to the total germinated dinoflagellates averagely. However,B. adriatica has not been reported in previous phytoplankton surveys, and was probably ignored or misidentified due to its small size and thin wall. The frequent and abundant occurrence of B. adriatica in the germinated phytoplankton community of many sea areas of the southern Chinese coastal waters suggests its wide and abundant distribution in these sea areas.A strain of small-sized dinoflagellates, isolated from the culture of sediment incubation collected from the coastal areas in southern China, has been identified under microscopical observation and r DNA sequence. Surface sediments from two sea areas in the southern Chinese coastal waters were incubated for 20 and 40 days, and germinated vegetative cells were observed. The cells were identified as species in the Suessiaceae based on the morphological characteristics, ultrastructural features of the cell, as well as its swimming behavior. The studied strain clusters into a well-supported clade together with six sequences of Biecheleriopsis adriatica in the phylogenetic tree based on the large subunit（LSU） rDNA sequence. Therefore, the strain has been identified as B. adriatica based on morphological observation and phylogenetic analysis. B. adriatica was the dominant dinoflagellate species in the germinated phytoplankton community from both sea areas,which contributed 50%–83% to the total germinated dinoflagellates averagely. However,B. adriatica has not been reported in previous phytoplankton surveys, and was probably ignored or misidentified due to its small size and thin wall. The frequent and abundant occurrence of B. adriatica in the germinated phytoplankton community of many sea areas of the southern Chinese coastal waters suggests its wide and abundant distribution in these sea areas.

关 键 词：Biecheleriopsis adriatica Cyst Germination Phylogeny Southern China 

分 类 号：Q949.2[生物学—植物学]