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Atacama desert is a source of new Micromonospora strains: description of Micromonospora sicca sp. nov

Lookup NU author(s): Professor Hans-Peter Klenk, Emeritus Professor Michael Goodfellow

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Abstract

© 2024 The Author(s)Several strains were isolated from subsurface soil of the Atacama Desert and were previously assigned to the Micromonospora genus. A polyphasic study was designed to determine the taxonomic affiliation of isolates 4G51T, 4G53, and 4G57. All the strains showed chemotaxonomic properties in line with their classification in the genus Micromonospora, including meso-diaminopimelic acid in the cell wall peptidoglycan, MK-9(H4) as major respiratory quinone, iso-C15:0 and iso-C16:0 as major fatty acids and diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol as major polar lipids. The 16S rRNA gene sequences of strains 4G51T, 4G53, and 4G57 showed the highest similarity (97.9 %) with the type strain of Micromonospora costi CS1-12T, forming an independent branch in the phylogenetic gene tree. Their independent position was confirmed with genome phylogenies, being most closely related to the type strain of Micromonospora kangleipakensis. Digital DNA-DNA hybridization and average nucleotide identity analyses between the isolates and their closest phylogenomic neighbours confirmed that they should be assigned to a new species within the genus Micromonospora for which the name Micromonospora sicca sp. nov. (4G51T=PCM 3031T=LMG 30756T) is proposed.

Publication metadata

Author(s): Carro L, Golinska P, Saati-Santamaria Z, Igual JM, Klenk H-P, Goodfellow M

Publication type: Article

Publication status: Published

Journal: Systematic and Applied Microbiology

Year: 2024

Volume: 47

Issue: 5

Print publication date: 01/09/2024

Online publication date: 03/08/2024

Acceptance date: 30/07/2024

Date deposited: 19/08/2024

ISSN (print): 0723-2020

ISSN (electronic): 1618-0984

Publisher: Elsevier GmbH

URL: https://doi.org/10.1016/j.syapm.2024.126542

DOI: 10.1016/j.syapm.2024.126542

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