{"refrec":{"BRefID":362774,"RR":"<b>Wetherbee, R.; Bringloe, T.T.; Costa, J.F.; van de Meene, A.; Andersen, R.A.; Verbruggen, H.</b> (2021). New pelagophytes show a novel mode of algal colony development and reveal a perforated theca that may define the class. <i>J. Phycol. 57(2)</i>: 396-411. <a href=\"https://dx.doi.org/10.1111/jpy.13074\" target=\"_blank\">https://dx.doi.org/10.1111/jpy.13074</a>","BEntID":360492,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>J. Phycol. 57(2)</i>: 396-411. <a href=\"https://dx.doi.org/10.1111/jpy.13074\" target=\"_blank\">https://dx.doi.org/10.1111/jpy.13074</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Wetherbee, R.; Bringloe, T.T.; Costa, J.F.; van de Meene, A.; Andersen, R.A.; Verbruggen, H.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Wetherbee, R. <i>et al.</i>","Englishabstract":"Pelagophytes (Heterokonta) are a morphologically diverse class of marine algae historically united only by DNA sequences. We established clonal cultures of sand-dwelling pelagophytes collected from intertidal pools around Australia. Phylogenetic trees based on nuclear 18S rDNA and plastid <i>rbc</i>L, <i>psa</i>A, <i>psa</i>B, <i>psb</i>A, and <i>psb</i>C sequences revealed two new genera, <i>Gazia</i> and <i>Glomerochrysis</i>, related to <i>Aureoumbra</i> in a distinct lineage within the Sarcinochrysidaceae (Pelagophyceae). The three new species (<i>Gazia</i> <i>saundersii</i>, <i>Gazia australica,</i> and <i>Glomerochrysis psammophila</i>), along with an Australian strain of <i>Aureoumbra</i> <i>geitleri,</i> are characterized by dominant benthic stages that differ significantly from one another, while occasionally producing classic heterokont zoospores. The benthic stage of <i>Ga. saundersii</i> has a novel development not observed in any other colonial alga, consisting of large, spherical colonies (up to 140&nbsp;μm in diameter) containing c. 2,500 cells that eventually differentiate and segregate into a large number of daughter colonies that are subsequently liberated. Alternatively, colonies may differentiate into a mass of zoospores that escape and settle to develop into new colonies. In <i>Gl. psammophila</i>, cubic packets of cells form large sticky clusters that bind sand together, while <i>Ga. australica</i> and <i>A. geitleri</i> are unicellular species. Using fixation by high-pressure freezing, a distinctive perforated theca was observed by TEM in all genera of this lineage, and we hypothesize this unique covering may be the first morphological feature to characterize most, if not all, pelagophytes. This study substantiates the diverse nature of sand-dwelling pelagophytes as well as their mechanisms for thriving in a dynamic habitat.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"New pelagophytes show a novel mode of algal colony development and reveal a perforated theca that may define the class","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-09 01:32:31.959127","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Aureoumbra; Gazia; Glomerochrysis; Sarcinochrysidaceae; Pelagophyceae; molecular phylogeny; perforated theca; sand dwelling","OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2023-03-28","DateCreate":"2023-03-27","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000594402700001","VABBcode":null,"OpenAcc":0,"DOI":"10.1111/jpy.13074"},"refs":null,"anarec":{"AnaID":362774,"PubliDate":2021,"Pagination":"396-411","XtraPublOfAnaID":null,"ISBN":null,"Volume":"57","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43251,"SerRR":"Journal of Phycology. 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