Pseudonocardiaceae

Pseudonocardiaceae

Pseudonocardiaceae

Family of bacteria


The Pseudonocardiaceae are a family of bacteria in the order Actinomycetales and the only member of the suborder Pseudonocardineae.

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Genomics

The species within the family Pseudonocardiaceae form a distinct clade in phylogenetic trees based on concatenated protein sequences. Additionally, Nakamurella multipartite, currently part of the order Frankiales, also formed a clade with the Pseudonocardiaceae species in 100% of the bootstrap replications of the phylogenetic trees. A conserved signature indel has been identified which is found in N. multipartite and all but one of the Pseudonocardiaceae species. This one-amino-acid insertion in UMP kinase serves to both provide a molecular marker for nearly all of the Pseudonocardiaceae and suggests N. multipartite is closely related to this group. Some evidence also suggests the orders Pseudonocardiales and Corynebacteriales are closely related. Several conserved signature indels have been identified which are found in both Pseudonocardiales and Corynebacteriales, including a three-amino-acid insertion in a conserved region of UDP-galactopyranose mutase. This insertion is also present in N. multipartite and Geodermatophilus obscurus, another member of Frankiales. Additionally, five conserved signature proteins have been identified which are found only in the orders Pseudonocardiales and Corynebacteriales. Homologs of the proteins are generally found in N. multipartite and G. obscurus, providing additional evidence of these two species being closely related to the orders Pseudonocardiales and Corynebacteriales.[3]

Genera

Pseudonocardiaceae comprises the following genera:[4]

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN).[4] The phylogeny is based on whole-genome analysis.[5][lower-alpha 1]

Notes

  1. Actinocrispum, Actinorectispora, Bounagaea, Crossiella, Gandjariella, Haloactinomyces, Halopolyspora, Halosaccharopolyspora, Herbihabitans, Labedaea, Longimycelium, Salinifilum, Solihabitans, Tamaricihabitans, and Thermotunica are not included in this phylogenetic tree.

References

  1. Labeda DP, Goodfellow M (2012). "Order XIII. Pseudonocardiales ord. nov.". In Goodfellow M, Kämpfer P, Trujillo ME, Suzuki K, Ludwig W, Whitman WB (eds.). Bergey's Manual of Systematic Bacteriology. Vol. 5 (2nd ed.). New York: Springer. p. 1301.
  2. Embley MT, Smida J, Stackebrandt E (1988). "The phylogeny of mycolate-less wall chemotype IV Actinomycetes and description of Pseudonocardiaceae fam. nov". Syst. Appl. Microbiol. 11: 16–19. doi:10.1016/S0723-2020(88)80047-X.
  3. Gao, B.; Gupta, R. S. (2012). "Phylogenetic Framework and Molecular Signatures for the Main Clades of the Phylum Actinobacteria". Microbiology and Molecular Biology Reviews. 76 (1): 66–112. doi:10.1128/MMBR.05011-11. PMC 3294427. PMID 22390973.
  4. Euzéby JP, Parte AC. "Pseudonocardiaceae". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved June 9, 2021.
  5. Nouioui I, Carro L, García-López M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Göker M (2018). "Genome-Based Taxonomic Classification of the Phylum Actinobacteria". Front. Microbiol. 9: 2007. doi:10.3389/fmicb.2018.02007. PMC 6113628. PMID 30186281.

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