Phylogeny of lobose amoebae based on actin and small-subunit ribosomal RNA genes

被引:89
|
作者
Fahrni, JF [1 ]
Bolivar, I
Berney, U
Nassonova, E
Smirnov, A
Pawlowski, J
机构
[1] Univ Geneva, Dept Zool & Anim Biol, Geneva, Switzerland
[2] RAS, Inst Cytol, Lab Cytol Unicellular Organisms, St Petersburg, Russia
[3] St Petersburg State Univ, Dept Invertebrate Zool, St Petersburg, Russia
关键词
actin; Amoebozoa; Lobosea; molecular phylogeny; small-subunit ribosomal RNA;
D O I
10.1093/molbev/msg201
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Lobose amoebae are abundant free-living protists and important pathogenic agents, yet their evolutionary history and position in the universal tree of life are poorly known. Molecular data for lobose amoebae are limited to a few species, and all phylogenetic studies published so far lacked representatives of many of their taxonomic groups. Here we analyze actin and small-subunit ribosomal RNA (SSU rRNA) gene sequences of a broad taxon sampling of naked, lobose amoebae. Our results support the existence of a monophyletic Amoebozoa clade, which comprises all lobose amoebae examined so far, the amitochondriate pelobionts and entamoebids, and the slime molds. Both actin and SSU rRNA phylogenies distinguish two well-defined clades of amoebae, the "Gymnamoebia sensu stricto" and the Archamoebae (pelobionts + entamoebids), and one weakly supported and ill-resolved group comprising some naked, lobose amoebae and the Mycetozoa.
引用
收藏
页码:1881 / 1886
页数:6
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