Invalidation of Hyperamoeba by transferring its species to other genera of Myxogastria

The Journal of Eukaryotic Microbiology
Anna Maria Fiore-DonnoThomas Cavalier-Smith

Abstract

The genus Hyperamoeba Alexeieff, 1923 was established to accommodate an aerobic amoeba exhibiting three life stages-amoeba, flagellate, and cyst. As more species/strains were isolated, it became increasingly evident from small subunit (SSU) gene phylogenies and ultrastructure that Hyperamoeba is polyphyletic and its species occupy different positions within the class Myxogastria. To pinpoint Hyperamoeba strains within other myxogastrid genera we aligned numerous myxogastrid sequences: whole small subunit ribosomal (SSU or 18S rRNA) gene for 50 dark-spored (i.e. Stemonitida and Physarida) Myxogastria (including a new "Hyperamoeba"/Didymium sequence) and a approximately 400-bp SSU fragment for 147 isolates assigned to 10 genera of the order Physarida. Phylogenetic analyses show unambiguously that the type species Hyperamoeba flagellata is a Physarum (Physarum flagellatum comb. nov.) as it nests among other Physarum species as robust sister to Physarum didermoides. Our trees also allow the following allocations: five Hyperamoeba strains to the genus Stemonitis; Hyperamoeba dachnaya, Pseudodidymium cryptomastigophorum, and three other Hyperamoeba strains to the genus Didymium; and two further Hyperamoeba strains to the family Physa...Continue Reading

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Nov 26, 2009·Mycologia·Anna Maria Fiore-DonnoThomas Cavalier-Smith

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Citations

Apr 25, 2012·PloS One·Anna Maria Fiore-DonnoThomas Cavalier-Smith
Jul 30, 2011·Protist·Alexey V SmirnovThomas Cavalier-Smith
Mar 31, 2015·The ISME Journal·Stefan GeisenTim Urich
Mar 26, 2013·European Journal of Protistology·Aaron A HeissAlastair G B Simpson
Nov 22, 2012·FEMS Microbiology Ecology·Akiko KamonoAnna Maria Fiore-Donno
Jun 29, 2016·Protist·Laura M Walker, Steven L Stephenson
Jul 8, 2021·Applied and Environmental Microbiology·Félix BornierXavier Charpentier

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