{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["8"],"submitter":["Keller A"],"pubmed_abstract":["<h4>Background</h4>Within Chlorophyceae the ITS2 secondary structure shows an unbranched helix I, except for the 'Hydrodictyon' and the 'Scenedesmus' clade having a ramified first helix. The latter two are classified within the Sphaeropleales, characterised by directly opposed basal bodies in their flagellar apparatuses (DO-group). Previous studies could not resolve the taxonomic position of the 'Sphaeroplea' clade within the Chlorophyceae without ambiguity and two pivotal questions remain open: (1) Is the DO-group monophyletic and (2) is a branched helix I an apomorphic feature of the DO-group? In the present study we analysed the secondary structure of three newly obtained ITS2 sequences classified within the 'Sphaeroplea' clade and resolved sphaeroplealean relationships by applying diff"],"journal":["BMC evolutionary biology"],"pagination":["218"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC2519086"],"repository":["biostudies-literature"],"pubmed_title":["ITS2 data corroborate a monophyletic chlorophycean DO-group (Sphaeropleales)."],"pmcid":["PMC2519086"],"pubmed_authors":["Keller A","Schleicher T","Forster F","Ruderisch B","Dandekar T","Muller T","Wolf M"],"additional_accession":[]},"is_claimable":false,"name":"ITS2 data corroborate a monophyletic chlorophycean DO-group (Sphaeropleales).","description":"<h4>Background</h4>Within Chlorophyceae the ITS2 secondary structure shows an unbranched helix I, except for the 'Hydrodictyon' and the 'Scenedesmus' clade having a ramified first helix. The latter two are classified within the Sphaeropleales, characterised by directly opposed basal bodies in their flagellar apparatuses (DO-group). Previous studies could not resolve the taxonomic position of the 'Sphaeroplea' clade within the Chlorophyceae without ambiguity and two pivotal questions remain open: (1) Is the DO-group monophyletic and (2) is a branched helix I an apomorphic feature of the DO-group? In the present study we analysed the secondary structure of three newly obtained ITS2 sequences classified within the 'Sphaeroplea' clade and resolved sphaeroplealean relationships by applying diff","dates":{"release":"2008-01-01T00:00:00Z","publication":"2008 Jul","modification":"2025-04-04T19:31:13.272Z","creation":"2019-03-27T00:16:16Z"},"accession":"S-EPMC2519086","cross_references":{"pubmed":["18655698"],"doi":["10.1186/1471-2148-8-218"]}}