{"refrec":{"BRefID":334956,"RR":"<b>Roux, P.; Siano, R.; Collin, K.; Bilien, G.; Sinquin, C.; Marchand, L.; Zykwinska, A.; Delbarre-Ladrat, C.; Schapira, M.</b> (2021). Bacteria enhance the production of extracellular polymeric substances by the green dinoflagellate <i>Lepidodinium chlorophorum</i>. <i>NPG Scientific Reports 11(1)</i>: 4795. <a href=\"https://dx.doi.org/10.1038/s41598-021-84253-2\" target=\"_blank\">https://dx.doi.org/10.1038/s41598-021-84253-2</a>","BEntID":331513,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>NPG Scientific Reports 11(1)</i>: 4795. <a href=\"https://dx.doi.org/10.1038/s41598-021-84253-2\" target=\"_blank\">https://dx.doi.org/10.1038/s41598-021-84253-2</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Roux, P.; Siano, R.; Collin, K.; Bilien, G.; Sinquin, C.; Marchand, L.; Zykwinska, A.; Delbarre-Ladrat, C.; Schapira, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Roux, P. <i>et al.</i>","Englishabstract":"High biomasses of the marine dinoflagellate <i>Lepidodinium chlorophorum</i> cause green seawater discolorations along Southern Brittany (NE Atlantic, France). The viscosity associated to these phenomena has been related to problems in oyster cultivation. The harmful effect of <i>L. chlorophorum</i> might originate from the secretion of Extracellular Polymeric Substances (EPS). To understand whether the EPS are produced by <i>L. chlorophorum</i> or its associated bacteria, or if they are a product of their interaction, batch cultures were performed under non-axenic and pseudo-axenic conditions for three strains. Maximum dinoflagellate cell abundances were observed in pseudo-axenic cultures. The non-sinking fraction of polymers (Soluble Extracellular Polymers, SEP), mainly composed of proteins and the exopolysaccharide sulphated galactan, slightly increased in pseudo-axenic cultures. The amount of Transparent Exopolymer Particles (TEP)&nbsp;per cell increased under non-axenic conditions. Despite the high concentrations of Particulate Organic Carbon (POC)&nbsp;measured, viscosity did not vary. These results suggest that the <i>L. chlorophorum</i>-bacteria interaction could have a detrimental consequence on the dinoflagellate, translating in a negative effect on <i>L. chlorophorum</i> growth, as well as EPS overproduction by the dinoflagellate, at concentrations that should not affect seawater viscosity.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Bacteria enhance the production of extracellular polymeric substances by the green dinoflagellate <i>Lepidodinium chlorophorum</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-15 01:33:30.069472","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2021-03-18","DateCreate":"2021-03-18","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000626626300010","VABBcode":null,"OpenAcc":1,"DOI":"10.1038/s41598-021-84253-2"},"refs":null,"anarec":{"AnaID":334956,"PubliDate":2021,"Pagination":"4795","XtraPublOfAnaID":null,"ISBN":null,"Volume":"11","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":208093,"SerRR":"Scientific Reports (Nature Publishing Group). 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