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Global-Scale Diversity and Distribution Characteristics of Reef-Associated Symbiodiniaceae via the Cluster-Based Parsimony of Internal Transcribed Spacer 2 Sequences

查看全文 作　　者：GONG [1,2,3]Sanqiang;CHAI [1]Guangjun;SUN [1]Wei;ZHANG [1]Fengli;YU [4]Kefu;LI [1]Zhiyong 高影响力作者 机构地区：[1]Marine Biotechnology Laboratory,State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology,Shanghai Jiao Tong University,Shanghai 200240,China;[2]Key Laboratory of Tropical Marine Bioresources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology,South China Sea Institute of Oceanology,Guangzhou 510301,China;[3]Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China;[4]Coral Reef Research Center of China,Guangxi University,Nanning 530004,China高影响力机构 出　　处：《Journal of Ocean University of China》索引2021年第20卷第2期,共11页高影响力期刊 基　　金：funded by the National Key Basic Research Program of China (No. 2013CB956103);the Key Ecological Processes and Health Regulation Principles of Marine Ecosystem in Guangdong-Hong Kong-Macao Grea-ter Bay Area (No. GML2019ZD0405);the CAS Pioneer Hundred Talents Program,and the South China Sea Insti-tute of Oceanography,CAS (Nos. Y8SL031001 and Y9YB021001)。 摘　　要：Photosynthetic species belonging to Symbiodiniaceae play important ecological roles in coral reef ecosystems. Nine phylogenetically supported Symbiodiniaceae clades(each containing multiple genetically distinct molecular types) have been detected in reef-associated animals and in seawater or sediments near coral reef areas. Although major advances in research on Symbiodiniaceae diversity have been made, information on the global-scale diversity and distribution characteristics of Symbiodiniaceae clades/types is still limited or must be expanded because most studies on Symbiodiniaceae have mainly focused on a limited number of hosts associated with Symbiodiniaceae or coral reef areas. Here, the diversity and distribution characteristics of Symbiodiniaceae data derived from reef-associated animals and seawater or sediments near coral reef areas were analyzed using 3899 qualified Symbiodiniaceae internal transcribed spacer 2(ITS2) sequences retrieved from the GenBank database in May 2017. These sequences were annotated as Symbiodiniaceae ITS2 types via sequence alignment against database of Symbiodiniaceae ITS2 types. Results showed that photosynthetic Symbiodiniaceae ITS2 sequences could be annotated as 119 Symbiodiniaceae ITS2 types within nine clades(A–I), and Symbiodiniaceae ITS2 types mainly inhabited coral reefs between 30?N and 30?S. Symbiodiniaceae ITS2 types could be associated with multiple host taxa. Interestingly, these results implied that the distribution of Symbiodiniaceae ITS2 types was distinct in the Atlantic Ocean, the Red Sea, the Mediterranean Sea, and the Indo-Pacific Ocean. Although future field research should be performed to verify our results, this study provided a broad perspective of the diversity of Symbiodiniaceae clades/types on a global scale. 关 键 词：Symbiodiniaceae DIVERSITY reef-dwelling animals coral reefs global scale
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