Possible bloom of free trichomes in the Bay of Marseille, NW Mediterranean Sea: an anomaly evidenced by flow cytometry

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	Possible bloom of free trichomes in the Bay of Marseille, NW Mediterranean Sea: an anomaly evidenced by flow cytometry
	Zhao, Li 1,2,3; Denis, Michel 2; Barani, Aude 2; Beker, Beatriz 4; Mante, Claude 2; Xiao, Tian 1; Gregori, Gerald 2
刊名	JOURNAL OF PLANKTON RESEARCH
	2012-08-01
卷号	34 期号:8 页码:711-718
关键词	ultraphytoplankton trichomes Bay of Marseille flow cytometry cell sorting
ISSN号	0142-7873
通讯作者	Zhao, L (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China.
英文摘要	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.
学科主题	Marine & Freshwater Biology ; Oceanography
收录类别	SCI
原文出处	10.1093/plankt/fbs038
语种	英语
WOS记录号	WOS:000305827100006
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12436]
专题	海洋研究所_海洋生态与环境科学重点实验室
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
推荐引用方式 GB/T 7714	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.,...&Gregori, Gerald.(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.