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Volume 74, Issue 1

sp. nov., a member of the from marine beach sediment of the north coast of Portugal No Access

Abstract

The oceans harbour a myriad of unknown micro-organisms that remain unstudied because of a failure to establish the right growth conditions under laboratory conditions. To overcome this limitation, an isolation effort inspired by the iChip was performed using marine sediments from Memória beach, Portugal. A novel strain, PMIC_1C1B, was obtained and subjected to a polyphasic study. Cells of strain PMIC_1C1B were Gram-positive, rod-shaped, divided by binary fission and formed colonies that were shiny light-yellow. Based on its full 16S rRNA gene sequence, strain PMIC_1C1B was phylogenetically associated to the genus and its closest relatives were KACC 15219 (98.55 %), RZ63 (98.48 %) and JCM 14558 (98.13 %). Strain PMIC_1C1B had a genome size of 2 761 607 bp with 67.71 mol% of G+C content and 2582 coding sequences, which is lower than the genus average. Strain PMIC_1C1B grew from 15 to 30 °C, optimally at 25 °C, at pH 6.0 to 11.0, optimally between pH 6.0 and 8.0, and from 0 to 5 % (w/v) NaCl, optimally between 2.0 and 3.0 %. It grew with casamino acids, glutamine, methionine, -acetylglucosamine, sodium nitrate, tryptophan, urea and valine as sole nitrogen sources, and arabinose and cellobiose as sole carbon sources. The major cellular fatty acids were anteiso-C, iso-C and iso-C. Genome mining revealed the presence of four biosynthetic gene clusters (BGCs) with low similarities to other known BCGs. Based on the polyphasic data, strain PMIC_1C1B is proposed to represent a novel species, for which the name sp. nov. (=CECT 30366=LMG 32350) is proposed.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): Actinomycetia , iChip , Microbacteriaceae and novel taxon
Funding
This study was supported by the:
  • Fonds National de la Recherche Luxembourg (Award 14583934)
    • Principle Award Recipient: DominikaKlimek
  • Fundação para a Ciência e a Tecnologia (Award SFRH/BD/145576/2019)
    • Principle Award Recipient: JoséDiogo Neves dos Santos
  • Fundação para a Ciência e a Tecnologia (Award UIDP/04423/2020)
    • Principle Award Recipient: OlgaMaria Lage
  • Fundação para a Ciência e a Tecnologia (Award UIDB/04423/2020)
    • Principle Award Recipient: OlgaMaria Lage
© 2024 The Authors
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Microbacterium memoriense sp. nov., a member of the Actinomycetota from marine beach sediment of the north coast of Portugal
Int J Syst Evol Microbiol 74, 006230 (2024); https://doi.org/10.1099/ijsem.0.006230
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