The Testate Lobose Amoebae (Order Arcellinida Kent, 1880) Finally Find their Home within Amoebozoa

Article Article scientifique Article The Testate Lobose Amoebae (Order Arcellinida Kent, 1880) Finally Find their Home within Amoebozoa eng 2005-08-18 author Nikolaev Sergey Igorievich 593779 author Mitchell Edward 735198 author Petrov Nikolay B. author Berney Cédric 94950 author Fahrni José 26420 author Pawlowski Jan Wojciech 23432 191-202 10.1016/j.protis.2005.03.002 16171186 1434-4610 Testate lobose amoebae (order Arcellinida Kent, 1880) are common in all aquatic and terrestrial habitats, yet they are one of the last higher taxa of unicellular eukaryotes that has not found its place in the tree of life. The morphological approach did not allow to ascertain the evolutionary origin of the group or to prove its monophyly. To solve these challenging problems, we analyzed partial small-subunit ribosomal RNA (SSU rRNA) genes of seven testate lobose amoebae from two out of the three suborders and seven out of the 13 families belonging to the Arcellinida. Our data support the monophyly of the order and clearly establish its position among Amoebozoa, as a sister-group to the clade comprising families Amoebidae and Hartmannellidae. Complete SSU rRNA gene sequences from two species and a partial actin sequence from one species confirm this position. Our phylogenetic analyses including representatives of all sequenced lineages of lobose amoebae suggest that a rigid test appeared only once during the evolution of the Amoebozoa, and allow reinterpretation of some morphological characters used in the systematics of Arcellinida. Testate amoebae Phylogeny Evolution SSU rRNA gene Actin Amoebozoa Dewey 590 44 Département de génétique et évolution 162 false Protist 156 2 7e8c771a-700b-4069-a19d-8596479b6265 Article (Published version) Restricted Nikolaev_PRT_2005156191.pdf 582592 application/pdf ce1b8fc0c781c4f5a521e6ff09e9b03fcc9e79acc43d3098281b149effa3b5d3 restrictedAccess Faculté des sciences / Section de biologie / Département de génétique et évolution

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The Testate Lobose Amoebae (Order Arcellinida Kent, 1880) Finally Find their Home within Amoebozoa	Protist			2005	64	0

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Mitchell, Edward