{"refrec":{"BRefID":208527,"RR":"<b>van Gremberghe, I.; Leliaert, F.; Mergeay, J.; Vanormelingen, P.; Van der Gucht, K.; Debeer, A.-E.; Lacerot, G.; De Meester, L.; Vyverman, W.</b> (2011). Lack of phylogeographic structure in the freshwater cyanobacterium <i>Microcystis aeruginosa</i> suggests global dispersal. <i>PLoS One 6(5)</i>: e19561. <a href=\"http://dx.doi.org/10.1371/journal.pone.0019561\" target=\"_blank\">dx.doi.org/10.1371/journal.pone.0019561</a>","BEntID":200516,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>PLoS One 6(5)</i>: e19561. <a href=\"https://dx.doi.org/10.1371/journal.pone.0019561\" target=\"_blank\">https://dx.doi.org/10.1371/journal.pone.0019561</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"van Gremberghe, I.; Leliaert, F.; Mergeay, J.; Vanormelingen, P.; Van der Gucht, K.; Debeer, A.-E.; Lacerot, G.; De Meester, L.; Vyverman, W.","OrigTitleTranslFlag":0,"Authorstringtrunc":"van Gremberghe, I. <i>et al.</i>","Englishabstract":"<i><b>Background</i></b>: Free-living microorganisms have long been assumed to have ubiquitous distributions with little biogeographic signature because they typically exhibit high dispersal potential and large population sizes. However, molecular data provide contrasting results and it is far from clear to what extent dispersal limitation determines geographicstructuring of microbial populations. We aimed to determine biogeographical patterns of the bloom-forming freshwatercyanobacterium <i>Microcystis aeruginosa</i>. Being widely distributed on a global scale but patchily on a regional scale, this prokaryote is an ideal model organism to study microbial dispersal and biogeography.<i><b>Methodology/Principal Findings</i></b>: The phylogeography of <i>M. aeruginosa</i> was studied based on a dataset of 311 rDNAinternal transcribed spacer (ITS) sequences sampled from six continents. Richness of ITS sequences was high (239 ITS typeswere detected). Genetic divergence among ITS types averaged 4% (maximum pairwise divergence was 13%). Preliminary analyses revealed nearly completely unresolved phylogenetic relationships and a lack of genetic structure among all sequences due to extensive homoplasy at multiple hypervariable sites. After correcting for this, still no clear phylogeographic structure was detected, and no pattern of isolation by distance was found on a global scale. Concomitantly, genetic differentiation among continents was marginal, whereas variation within continents was high and was mostly shared with all other continents. Similarly, no genetic structure across climate zones was detected.<i><b>Conclusions/Significance</i></b>: The high overall diversity and wide global distribution of common ITS types in combination with the lack of phylogeographic structure suggest that intercontinental dispersal of <i>M. aeruginosa</i> ITS types is not rare, and that this species might have a truly cosmopolitan distribution.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Lack of phylogeographic structure in the freshwater cyanobacterium <i>Microcystis aeruginosa</i> suggests global dispersal","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2011,"MonPub":null,"DateUpdate":"2014-10-09","DateCreate":"2011-10-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000290256400023","VABBcode":null,"OpenAcc":1,"DOI":"10.1371/journal.pone.0019561"},"refs":null,"anarec":{"AnaID":208527,"PubliDate":2011,"Pagination":"e19561","XtraPublOfAnaID":null,"ISBN":null,"Volume":"6","Issue":"5","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":123954,"SerRR":"PLoS One. 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