Abstract
Eight novel strains of the phylum Planctomycetes were isolated from different aquatic habitats. Among these habitats were the hydrothermal vent system close to Panarea Island, a public beach at Mallorca Island, the shore of Costa Brava (Spain), and three sites with brackish water in the Baltic Sea. The genome sizes of the novel strains range from 4.33 to 6.29 Mb with DNA G+C contents between 52.8 and 66.7%. All strains are mesophilic (Topt 24–30 °C) and display generation times between 17 and 94 h. All eight isolates constitute novel species of either already described or novel genera within the family Lacipirellulaceae. Two of the novel species, Posidoniimonas polymericola (type strain Pla123aT = DSM 103020T = LMG 29466T) and Bythopirellula polymerisocia (type strain Pla144T = DSM 104841T = VKM B-3442T), belong to established genera, while the other strains represent the novel genera Aeoliella gen. nov., Botrimarina gen. nov., Pirellulimonas gen. nov. and Pseudobythopirellula gen. nov. Based on our polyphasic analysis, we propose the species Aeoliella mucimassa sp. nov. (type strain Pan181T = DSM 29370T = LMG 31346T = CECT 9840T = VKM B-3426T), Botrimarina colliarenosi sp. nov. (type strain Pla108T = DSM 103355T = LMG 29803T), Botrimarina hoheduenensis sp. nov. (type strain Pla111T = DSM 103485T = STH00945T, Jena Microbial Resource Collection JMRC), Botrimarina mediterranea sp. nov. (type strain Spa11T = DSM 100745T = LMG 31350T = CECT 9852T = VKM B-3431T), Pirellulimonas nuda sp. nov. (type strain Pla175T = DSM 109594T = CECT 9871T = VKM B-3448T) and Pseudobythopirellula maris sp. nov. (type strain Mal64T = DSM 100832T = LMG 29020T).
Highlights
Together with Verrucomicrobia, Chlamydiae and other sister phyla, the bacterial phylum Planctomycetes is part of the PVC superphylum (Wagner and Horn 2006)
The class Planctomycetia was recently reclassified and comprises four different orders: Pirellulales, Gemmatales, Isosphaerales and the revised Planctomycetales (Dedysh et al 2020). The latter three taxa harbour only a single family each, whereas the order Pirellulales currently consists of three families: Pirellulaceae, which contain most described genera and species (Kallscheuer et al 2019b, c, d, 2020c; Rensink et al 2020; Schubert et al 2020); Thermoguttaceae, which feature the only known thermophilic Planctomycetes (Slobodkina et al 2015, 2016); and Lacipirellulaceae (Dedysh et al 2020)
We extend the current collection of Lacipirellulaceae strains by the description of eight novel species belonging to two known and four hitherto undescribed genera
Summary
Together with Verrucomicrobia, Chlamydiae and other sister phyla, the bacterial phylum Planctomycetes is part of the PVC superphylum (Wagner and Horn 2006). The class Planctomycetia was recently reclassified and comprises four different orders: Pirellulales, Gemmatales, Isosphaerales and the revised Planctomycetales (Dedysh et al 2020) The latter three taxa harbour only a single family each, whereas the order Pirellulales currently consists of three families: Pirellulaceae, which contain most described genera and species (Kallscheuer et al 2019b, c, d, 2020c; Rensink et al 2020; Schubert et al 2020); Thermoguttaceae, which feature the only known thermophilic Planctomycetes (Slobodkina et al 2015, 2016); and Lacipirellulaceae (Dedysh et al 2020). We extend the current collection of Lacipirellulaceae strains by the description of eight novel species belonging to two known and four hitherto undescribed genera
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