title: Psalteriomonas lanterna gen. nov., sp. nov., a free-living amoeboflagellate isolated from freshwater anaerobic sediments.
abstract: A novel amoeboflagellate, isolated from anoxic sediment samples, is described and named Psalteriomonas lanterna gen. nov., sp. nov. The cells of the flagellate stage show a fourfold rotational symmetry with four nuclei, four ventral grooves and four mastigont systems. Each mastigont has four flagella of equal length. Microtubular roots, striated roots or rhizoplasts and electron-dense structures are associated with their basal bodies. A Golgi apparatus is absent. Organelles surrounded by rough endoplasmic reticulum (RER) are presumably modified mitochondria. Methanogenic endosymbiotic bacteria are closely associated with microbodies and form a central body. Nuclear division shows the characteristics of a closed mitosis. Cells of the amoeboid stage are mononucleated and lack the methanogenic endosymbionts. Reproduction occurs in both stages of the life cycle.
authors.affiliation: Department of Microbiology, Faculty of Science, University of Nijmegen, Toernooiveld, Nijmegen, The Netherlands.
authors.forename: C A
authors.initials: CA
authors.lastname: Broers
authors.forename: C K
authors.initials: CK
authors.lastname: Stumm
authors.forename: G D
authors.initials: GD
authors.lastname: Vogels
authors.forename: G
authors.initials: G
authors.lastname: Brugerolle