Name: Priestia megaterium (de Bary 1884) Gupta et al. 2020

Category: Species

Proposed as: comb. nov.

Basonym: Bacillus megaterium de Bary 1884 (Approved Lists 1980)

Etymology: me.ga.te’ri.um. Gr. masc. adj. megas, large; Gr. neut. n. teras, monster, beast; N.L. neut. n. megaterium, big beast (nominative in apposition)

Gender: feminine

Type strain: ATCC 14581; BCRC 10608; CCM 2007; CCRC 10608; CCUG 1817; CIP 66.20; DSM 32; HAMBI 2018; IAM 13418; IFO 15308; JCM 2506; KCTC 3007; LMG 7127; NBIMCC 8947; NBRC 15308; NCCB 75016; NCIB 9376; NCIMB 9376; NCTC 10342; NRIC 1710; NRRL B-14308; VKM B-512

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: KJ569088 Analyse FASTA

Valid publication: Gupta RS, Patel S, Saini N, Chen S. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species. Int J Syst Evol Microbiol 2020; 70:5753-5798.

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 11 of the IJSEM. Int J Syst Evol Microbiol 2021; 71:4645.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Bacillus megaterium de Bary 1884 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Priestia Gupta et al. 2020. Publication: Gupta RS, Patel S, Saini N, Chen S. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species. Int J Syst Evol Microbiol 2020; 70:5753-5798.
  • ⏰ According to Gupta et al. (2020), this species is not an earlier heterotypic synonym of Bacillus aryabhattai Shivaji et al. 2009. Publication: Gupta RS, Patel S, Saini N, Chen S. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species. Int J Syst Evol Microbiol 2020; 70:5753-5798.
  • ⏰ According to Gupta et al. (2020), this species is not an earlier heterotypic synonym of Priestia aryabhattai (Shivaji et al. 2009) Gupta et al. 2020. Publication: Gupta RS, Patel S, Saini N, Chen S. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species. Int J Syst Evol Microbiol 2020; 70:5753-5798.
  • ⏰ According to Narsing-Rao et al. (2019), this species is an earlier heterotypic synonym of Bacillus aryabhattai Shivaji et al. 2009. Publication: Narsing Rao MP, Dong ZY, Liu GH, Li L, Xiao M, Li WJ. Reclassification of Bacillus aryabhattai Shivaji et al. 2009 as a later heterotypic synonym of Bacillus megaterium de Bary 1884 (Approved Lists 1980). FEMS Microbiol Lett 2019; 366:fnz258.
  • ⏰ According to Narsing-Rao et al. (2019), this species is an earlier heterotypic synonym of Priestia aryabhattai (Shivaji et al. 2009) Gupta et al. 2020. Publication: Narsing Rao MP, Dong ZY, Liu GH, Li L, Xiao M, Li WJ. Reclassification of Bacillus aryabhattai Shivaji et al. 2009 as a later heterotypic synonym of Bacillus megaterium de Bary 1884 (Approved Lists 1980). FEMS Microbiol Lett 2019; 366:fnz258.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 1, note = "animal pathogen - biological class of risk animal: 2 - plant pathogen - biological class of risk plant: 2". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1".
  • 🎓 Name mentioned 81 times in PubMed until 2024-03-27.

Parent taxon: Priestia Gupta et al. 2020

Assigned by: Gupta RS, Patel S, Saini N, Chen S. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species. Int J Syst Evol Microbiol 2020; 70:5753-5798.

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Record number: 14830