Pseudonocardiaceae

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Pseudonocardiaceae
Pseudonocardia pini on agar plate
Scientific classification Edit this classification
Domain: Bacteria
Phylum: Actinomycetota
Class: Actinomycetia
Order: Pseudonocardiales
Labeda and Goodfellow 2015[2]
Family: Pseudonocardiaceae
Embley et al. 1989[1]
Genera

See text.

Synonyms
  • Pseudonocardiales:
    • Actinopolysporales Goodfellow and Trujillo 2015
  • Pseudonocardiaceae:
    • Actinopolysporaceae Zhi et al. 2009
    • Actinopolysporineae Zhi et al. 2009
    • Actinosynnemataceae Labeda and Kroppenstedt 2000
    • Mzabimycetaceae Saker et al. 2015
    • Pseudonocardineae Stackebrandt et al. 1997

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

Genomics[edit]

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[edit]

Pseudonocardiaceae comprises the following genera:[4]

Phylogeny[edit]

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][a]

Notes[edit]

  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[edit]

  1. ^ 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.
  2. ^ 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.
  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. ^ a b 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.