{"refrec":{"BRefID":329567,"RR":"<b>Edvardsen, B.; Eikrem, W.; Throndsen, J.; Sáez, A.G.; Probert, I.; Medlin, L.K.</b> (2011). Ribosomal DNA phylogenies and a morphological revision provide the basis for a revised taxonomy of the Prymnesiales (Haptophyta). <i>Eur. J. Phycol. 46(3)</i>: 202-228. <a href=\"https://dx.doi.org/10.1080/09670262.2011.594095\" target=\"_blank\">https://dx.doi.org/10.1080/09670262.2011.594095</a>","BEntID":323174,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Eur. J. Phycol. 46(3)</i>: 202-228. <a href=\"https://dx.doi.org/10.1080/09670262.2011.594095\" target=\"_blank\">https://dx.doi.org/10.1080/09670262.2011.594095</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Edvardsen, B.; Eikrem, W.; Throndsen, J.; Sáez, A.G.; Probert, I.; Medlin, L.K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Edvardsen, B. <i>et al.</i>","Englishabstract":"Nucleotide sequences of the nuclear-encoded small subunit (18S rDNA) and partial large subunit (28S rDNA) ribosomal DNA were determined in 30 different species of the haptophyte genera <i>Prymnesium</i>, <i>Chrysocampanula</i>, <i>Chrysochromulina</i>, <i>Imantonia</i> and <i>Platychrysis</i>, all belonging to the order Prymnesiales. Phylogenies based on these and other available haptophyte 18S, 28S and plastid 16S rDNA sequences were reconstructed, and compared with available morphological and ultrastructural data. The rDNA phylogenies indicate that the genus <i>Chrysochromulina</i> is paraphyletic and is divided into two major clades. This is supported by ultrastructural and morphological data. There is a major split between <i>Chrysochromulina</i> species with a saddle-shaped cell form (clade B2) and the remaining species in the genus (clade B1). Clade B2 includes the type species <i>C. parva</i> and taxa belonging to this clade thus retain the name <i>Chrysochromulina</i>. The non-saddle-shaped <i>Chrysochromulina</i> species analysed are closely related to <i>Hyalolithus</i>, <i>Prymnesium</i> and <i>Platychrysis</i> species. <i>Imantonia</i> species are sister taxa to these species within clade B1. An amendment to the classification of the order Prymnesiales and the genera <i>Prymnesium</i>, <i>Platychrysis</i> and <i>Chrysochromulina</i> is proposed with one new and one emended family (Chrysochromulinaceae and Prymnesiaceae, respectively), two new genera (<i>Haptolina</i> and <i>Pseudohaptolina</i>), and one new species (<i>Pseudohaptolina arctica</i>). We suggest a revision of the taxonomy of the Prymnesiales that is in accordance with available molecular evidence and supported by morphological data.","AbstractOtherLang":" Chrysochromulinaceae, Haptophyta, phylogeny, phytoplankton, Prymnesiales,  Pseudohaptolina arctica , ribosomal DNA, taxonomy","BibLvlCode":"AS","StandardTitle":"Ribosomal DNA phylogenies and a morphological revision provide the basis for a revised taxonomy of the Prymnesiales (Haptophyta)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-18 01:32:19.474547","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Chrysochromulinaceae,  ribosomal DNA","OtherDescriptors":null,"Notes":null,"AnaPub":2011,"MonPub":null,"DateUpdate":"2020-09-28","DateCreate":"2020-09-28","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000299417500004","VABBcode":null,"OpenAcc":1,"DOI":"10.1080/09670262.2011.594095"},"refs":null,"anarec":{"AnaID":329567,"PubliDate":2011,"Pagination":"202-228","XtraPublOfAnaID":null,"ISBN":null,"Volume":"46","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42675,"SerRR":"European Journal of Phycology. 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