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Taxonomic Diversity of Pico-/Nanoeukaryotes Is Related to Dissolved Oxygen and Productivity, but Functional Composition Is Shaped by Limiting Nutrients in Eutrophic Coastal Oceans

文献类型：期刊论文

作者Wang, Yaping2,3; Li, Guihao2,3; Shi, Fei5; Dong, Jun5; Gentekaki, Eleni6; Zou, Songbao5; Zhu, Ping4; Zhang, Xiaoli5; Gong, Jun1,2,3
刊名FRONTIERS IN MICROBIOLOGY
出版日期2020-12-03
卷号11页码:15
关键词functional redundancy metabarcoding mixotrophy nutrient limitation productivity
ISSN号1664-302X
DOI10.3389/fmicb.2020.601037
通讯作者Gong, Jun(gongj27@mail.sysu.edu.cn)
英文摘要Pico-/nanoeukaryotes (P/NEs) comprise both primary producers and bacterial predators, playing important biogeochemical and ecological roles in the marine microbial loop. Besides the difference in size, these small-sized fractions can be distinguished from microplankton by certain functional and ecological traits. Nevertheless, little information is available regarding patterns of their taxonomic and functional diversity and community composition along environmental gradients in coastal marine ecosystems. In this study, we applied high-throughput sequencing of 18S rRNA gene to assess the taxonomic species richness and community composition of P/NEs in surface waters of Bohai Sea and North Yellow Sea, northern China spanning a 600-km distance during summer and winter of 2011. The richness of operational taxonomic units (OTUs) formed a U-shaped relationship with concentration of chlorophyll a (Chl-a, a proxy of primary productivity), but a stronger, negative relationship with concentration of dissolved oxygen (DO). These two factors also significantly co-varied with the OTU-based community composition of P/NEs. The effect of geographic distance on community composition of P/NEs was negligible. Among the three functional groups defined by trophic traits, heterotrophs had the highest OTU richness, which exhibited a U-shaped relationship with both DO and Chl-a. The community of P/NEs was dominated by heterotrophs and mixotrophs in terms of read numbers, which showed a trade-off along the gradient of phosphate, but no significant changes along DO and Chl-a gradients, indicating functional redundancy. Similarly, the proportion of phototrophs was significantly and positively correlated with the concentration of silicate. Our results indicate that taxonomic and functional composition of P/NEs are decoupled on a regional scale, and limiting nutrients are important factors in modulating functional composition of these microorganisms in the studied area. These findings contribute toward gaining a better understanding of how diversity of small eukaryotes and their functions are structured in coastal oceans and the effect of environmental changes on the structuring process.
WOS关键词BOHAI SEA ; SPECIES RICHNESS ; ORGANIC-MATTER ; PHYTOPLANKTON ; MARINE ; BACTERIAL ; FRESH ; DISTRIBUTIONS ; PICOPLANKTON ; COMMUNITIES
资助项目National Natural Science Foundation of China[41976128] ; Marine S and T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2018SDKJ04064] ; Research Fund Program of Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering ; Key Research Project of Frontier Science, CAS[QYZDB-SSW-DQC013-1] ; Fundamental Research Funds for the Central Universities, China[42000-31611178]
WOS研究方向Microbiology
语种英语
WOS记录号WOS:000599328200001
资助机构National Natural Science Foundation of China ; Marine S and T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao) ; Research Fund Program of Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering ; Key Research Project of Frontier Science, CAS ; Fundamental Research Funds for the Central Universities, China
源URL[http://ir.yic.ac.cn/handle/133337/27531]  
专题海岸带生物学与生物资源利用重点实验室
烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
通讯作者Gong, Jun
作者单位1.Guangdong Prov Key Lab Marine Resources & Coastal, Guangzhou, Peoples R China
2.Sun Yat Sen Univ, Sch Marine Sci, Zhuhai, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China
4.Ludong Univ, Sch Life Sci, Yantai, Peoples R China
5.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China
6.Mae Fah Luang Univ, Sch Sci, Chiang Rai, Thailand
推荐引用方式
GB/T 7714		 Wang, Yaping,Li, Guihao,Shi, Fei,et al. Taxonomic Diversity of Pico-/Nanoeukaryotes Is Related to Dissolved Oxygen and Productivity, but Functional Composition Is Shaped by Limiting Nutrients in Eutrophic Coastal Oceans[J]. FRONTIERS IN MICROBIOLOGY,2020,11:15.
APA Wang, Yaping.,Li, Guihao.,Shi, Fei.,Dong, Jun.,Gentekaki, Eleni.,...&Gong, Jun.(2020).Taxonomic Diversity of Pico-/Nanoeukaryotes Is Related to Dissolved Oxygen and Productivity, but Functional Composition Is Shaped by Limiting Nutrients in Eutrophic Coastal Oceans.FRONTIERS IN MICROBIOLOGY,11,15.
MLA Wang, Yaping,et al."Taxonomic Diversity of Pico-/Nanoeukaryotes Is Related to Dissolved Oxygen and Productivity, but Functional Composition Is Shaped by Limiting Nutrients in Eutrophic Coastal Oceans".FRONTIERS IN MICROBIOLOGY 11(2020):15.

入库方式： OAI收割

来源：烟台海岸带研究所

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