Lignipirellula cremea gen. nov., sp. nov., a planctomycete isolated from wood particles in a brackish river estuary

Abstract

A novel planctomycetal strain, designated Pla85_3_4T, was isolated from the surface of wood incubated at the discharge of a wastewater treatment plant in the Warnow river near Rostock, Germany. Cells of the novel strain have a cell envelope architecture resembling that of Gram-negative bacteria, are round to pear-shaped (length: 2.2 ± 0.4 µm, width: 1.2 ± 0.3 µm), form aggregates and divide by polar budding. Colonies have a cream colour. Strain Pla85_3_4T grows at ranges of 10–30 °C (optimum 26 °C) and at pH 6.5–10.0 (optimum 7.5), and has a doubling time of 26 h. Phylogenetically, strain Pla85_3_4T (DSM 103796T = LMG 29741T) is concluded to represent a novel species of a novel genus within the family Pirellulaceae, for which we propose the name Lignipirellula cremea gen. nov., sp. nov.

Analysis of bacterial communities in a municipal duck pond during a phytoplankton bloom and isolation of Anatilimnocola aggregata gen. nov., sp. nov., Lacipirellula limnantheis sp. nov. and Urbifossiella limnaea gen. nov., sp. nov. belonging to the phylum Planctomycetes

“…A striking difference when comparing members of the two phylogenetically distinct groups is their genome size. Strains of the class Phycisphaerae characterized so far have rather small genomes of 3.1–4.3 Mb (Fukunaga et al ., 2009; Pradel et al ., 2020), whereas Pirellulaceae have considerably larger genomes of 6–10 Mb (Clum et al ., 2009; Peeters et al ., 2020). Planctomycetes are believed to degrade compounds released by (dying) phototrophs or the biomass itself, which then serve as nutrient source.…”

Anatilimnocola floriformis sp. nov., a novel member of the family Pirellulaceae from a boreal lake, and emended description of the genus Anatilimnocola

“…The type genus of this family is the genus Pirellula (Schlesner and Hirsch 1987). Other described genera in the family Pirellulaceae with validly published names are Aureliella (Rast et al 2020), Blastopirellula (Schlesner et al 2004;Kallscheuer et al 2020b), Bremerella (Rensink et al 2020), Lignipirellula (Peeters et al 2020a), Crateriforma (Peeters et al 2020b), Mariniblastus (Lage et al 2017), Novipirellula (Kallscheuer et al 2020c), Rhodopirellula (Schlesner et al 2004;Kallscheuer et al 2020d), Roseimaritima (Bondoso et al 2015), Rosistilla (Waqqas et al 2020), Rubripirellula (Bondoso et al 2015) and Stieleria (Kallscheuer et al 2020a). Two additional described genera in this family with pending validation status are 'Anatilimnocola' (Kallscheuer et al 2021) and 'Roseiconus' (Kumar et al 2021).…”