1887

Abstract

The phylum is constituted by bacteria with unique features that are well adapted to a vast range of habitats. Here, we describe a novel planctomycete isolated from marine sediments collected on a beach in Matosinhos (Portugal) using an iChip-based culturing technique. Strain ICM_H10 forms beige-coloured colonies in modified M14 medium and its cells are spherical to ovoid in shape, stalked, rosette-forming and showing motility in a phase of the life cycle. Transmission electron microscopy observations showed a typical planctomycetal cell plan and cell division by budding. This strain requires salt for growth and grows in the range of 2.0–5.0 % (w/v) NaCl, from 20 to 37 °C, within a pH of 6.0–9.0 and is able to use diverse nitrogen and carbon sources. It is heterotrophic, aerobic and capable of microaerobic growth. This strain has a genome size of approximately 6.0 Mb and a G+C content of 58.1 mol%. A 16S rRNA gene-based phylogenetic analysis supports the association of strain ICM_H10 to the phylum and the family , as it shares only 96.8 and 96.4% similarity to its closest relatives Pan54 and IFAM 1448, respectively. Other phylogenetic markers also support the separation of this strain into a novel species. Morphological, physiological and genomic comparisons between strain ICM_H10 and its closest relatives strongly suggest that ICM_H10 represents a new species of the genus , for which we propose the name sp. nov., with ICM_H10 (=CECT 30326=LMG 32234) as type strain.

Funding
This study was supported by the:
  • Norte Portugal Regional Operational Program (NORTE 2020) (Award NORTE-01-0145-FEDER-000040)
    • Principle Award Recipient: NotApplicable
  • Fundação para a Ciência e Tecnologia (Award UIDP/04423/2020)
    • Principle Award Recipient: OlgaMaria Lage
  • Fundação para a Ciência e Tecnologia (Award UIDB/04423/2020)
    • Principle Award Recipient: OlgaMaria Lage
  • Fundação para a Ciência e Tecnologia (Award SFRH/BD/145577/2019)
    • Principle Award Recipient: InêsRosado Vitorino
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/content/journal/ijsem/10.1099/ijsem.0.005425
2022-06-10
2024-10-03
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