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Possible bloom of free trichomes in the Bay of Marseille, NW Mediterranean Sea: an anomaly evidenced by flow cytometry
Zhao, Li1,2,3; Denis, Michel2; Barani, Aude2; Beker, Beatriz4; Mante, Claude2; Xiao, Tian1; Gregori, Gerald2; Zhao, L (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China.
2012-08-01
发表期刊JOURNAL OF PLANKTON RESEARCH
ISSN0142-7873
卷号34期号:8页码:711-718
文章类型Article
摘要The composition of ultraphytoplankton (10 m) sampled in surface waters (1 m depth) was investigated during summer 2010 in the Bay of Marseille (NW Mediterranean) using flow cytometry. In addition to groups of Synechococcus, Prochlorococcus, picoeukaryotes and nanoeukaryotes, an unidentified additional cluster was observed. The particles forming this cluster had a high abundance (7 10(4) events mL(1)), with both orange and red fluorescence intensities like Synechococcus, but with a size signal larger than that of 2 m fluorospheres (beads). These unknown particles were sorted out by flow cytometry and then observed by epifluorescence microscopy: they appeared to be chain-forming microorganisms, just like trichomes of some diazotroph cyanobacteria with one heterocyst, but not unambiguously distal. The chains observed after cell sorting were not straight, but rather folded. To our knowledge, this is the first report of a possible bloom of such free trichomes. The small sample volume available for the delayed analysis and the limited resolution of our photomicrography did not allow for species identification. The brief occurrence of free trichomes in the Bay of Marseille with such a high abundance remains to be explained. High temperature in summer, induced stratification of the water column and nitrate depletion may be related to this event. High-frequency surveys of ultraphytoplankton assemblages at the single cell level appear to be necessary to observe such phenomenon more efficiently and document their dynamics.
关键词Ultraphytoplankton Trichomes Bay Of Marseille Flow Cytometry Cell Sorting
学科领域Marine & Freshwater Biology ; Oceanography
DOI10.1093/plankt/fbs038
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收录类别SCI
语种英语
WOS记录号WOS:000305827100006
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/12436
专题海洋生态与环境科学重点实验室
通讯作者Zhao, L (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China.
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Aix Marseille Univ, Mediterranean Inst Oceanol, CNRS INSU, F-13288 Marseille 09, France
3.Grad Univ, Chinese Acad Sci, Beijing 10086, Peoples R China
4.Inst Univ Europeen Mer IUEM, Lab Sci Environm Marin, CNRS INSU, F-29280 Plouzane, France
第一作者单位中国科学院海洋研究所
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Zhao, Li,Denis, Michel,Barani, Aude,et al. Possible bloom of free trichomes in the Bay of Marseille, NW Mediterranean Sea: an anomaly evidenced by flow cytometry[J]. JOURNAL OF PLANKTON RESEARCH,2012,34(8):711-718.
APA Zhao, Li.,Denis, Michel.,Barani, Aude.,Beker, Beatriz.,Mante, Claude.,...&Zhao, L .(2012).Possible bloom of free trichomes in the Bay of Marseille, NW Mediterranean Sea: an anomaly evidenced by flow cytometry.JOURNAL OF PLANKTON RESEARCH,34(8),711-718.
MLA Zhao, Li,et al."Possible bloom of free trichomes in the Bay of Marseille, NW Mediterranean Sea: an anomaly evidenced by flow cytometry".JOURNAL OF PLANKTON RESEARCH 34.8(2012):711-718.
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