Seasonal dynamics of photosynthetic picoeukaryote abundance and diversity in the Yellow Sea and East China Sea

Title
Seasonal dynamics of photosynthetic picoeukaryote abundance and diversity in the Yellow Sea and East China Sea
Author(s)
양은찬; 최동한; 최중기; 노재훈
KIOST Author(s)
Yang, Eun Chan(양은찬)Choi, Dong Han(최동한)Noh, Jae Hoon(노재훈)
Publication Year
2015-05-12
Abstract
Background: Marine photosynthetic picoplanktons, cell size less than 3 um, contribute significantly to phytoplankton biomass and perform essential ecological roles in vast marine area. Compared with photosynthetic picoprokaryotes(PPPs) dominated by two genera, Prochlorococcus and Synechococcus, photosynthetic picoeukaryotes(PPEs)are much more diverse, with virtually every algal class being represented. Despite importance of PPEs, the true extent of their diversity and composition has only recently been uncovered by molecular methods. However, the genetic diversity and ecology of PPEs are still poorly described for the Yellow Sea and the East China Sea.Results: Surface water samples were collected from the YS and ECS, and analyzed for PPEs cell abundance and genetic diversity. PPEs cell abundance enumerated using flow cytometry, showed seasonal variations ranging 102~105 cells ml-1. PPEs genetic diversity was analyzed using Illumina MiSeq sequencing of Plastid 16S rRNA gene amplicons. At the division level, the most abundant PPEs were Chlorophyta and Haptophyta, followed by Ochrophyta, Crytophyta, and Dinophyta. In the East China Sea, relative abundance of Chlorophyta group to total PPEs showed seasonally variable contribution of 7.3~755.7%, and mostly dominated by Mamiellopphyceae and Prasionophyceae. However, in the Yellow Sea, Haptophyta was the most abundant group dominated by Prymnesiophyceae. nated by two genera, Prochlorococcus and Synechococcus, photosynthetic picoeukaryotes(PPEs)are much more diverse, with virtually every algal class being represented. Despite importance of PPEs, the true extent of their diversity and composition has only recently been uncovered by molecular methods. However, the genetic diversity and ecology of PPEs are still poorly described for the Yellow Sea and the East China Sea.Results: Surface water samples were collected from the YS and ECS, and analyzed for PPEs cell abundance and genetic diversity. PPEs cell abundance enumerated using flow cytometry, showed seasonal variations ranging 102~105 cells ml-1. PPEs genetic diversity was analyzed using Illumina MiSeq sequencing of Plastid 16S rRNA gene amplicons. At the division level, the most abundant PPEs were Chlorophyta and Haptophyta, followed by Ochrophyta, Crytophyta, and Dinophyta. In the East China Sea, relative abundance of Chlorophyta group to total PPEs showed seasonally variable contribution of 7.3~755.7%, and mostly dominated by Mamiellopphyceae and Prasionophyceae. However, in the Yellow Sea, Haptophyta was the most abundant group dominated by Prymnesiophyceae.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25580
Bibliographic Citation
8th International Symposium on the Marine Sciences of the Yellow Sea and East Sea (ISMY-8), 2015
Publisher
CKJORC
Type
Conference
Language
English
Publisher
CKJORC
Related Researcher
Research Interests

Algae,Systematics,Ecology,조류,계통,생태

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