International Journal of Systematic and Evolutionary Microbiology

Aims & Scope

Published by the Microbiology Society and owned by the International Committee on Systematics of Prokaryotes (ICSP), a committee of the Bacteriology and Applied Microbiology Division of the International Union of Microbiological Societies, International Journal of Systematic and Evolutionary Microbiology is the leading forum for the publication of novel microbial taxa and the ICSP’s official journal of record for prokaryotic names.

The journal welcomes high-quality research on all aspects of microbial evolution, phylogenetics and systematics, encouraging submissions on all prokaryotes, yeasts, microfungi, protozoa and microalgae across the full breadth of systematics including: Identification, characterisation and culture preservation Microbial evolution and biodiversity Molecular environmental work with strong taxonomic or evolutionary content Nomenclature Taxonomy and phylogenetics.

View Aims & Scope

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Metrics & Ranking

Impact Factor

Year	Value
2025	2
2024	2.00

Journal Rank

Year	Value
2024	7407

Journal Citation Indicator

Year	Value
2024	3064

SJR (SCImago Journal Rank)

Year	Value
2024	0.749

Quartile

Year	Value
2024	Q1

h-index

Year	Value
2024	205

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Abstracting & Indexing

Journal is indexed in leading academic databases, ensuring global visibility and accessibility of our peer-reviewed research.

• Scopus
• Google Scholar
• Web of Science

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Subjects & Keywords

Journal’s research areas, covering key disciplines and specialized sub-topics in Agricultural and Biological Sciences, Immunology and Microbiology and Medicine, designed to support cutting-edge academic discovery.

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Most Cited Articles

The Most Cited Articles section features the journal's most impactful research, based on citation counts. These articles have been referenced frequently by other researchers, indicating their significant contribution to their respective fields.

• Introducing EzBioCloud: a taxonomically united database of 16S rRNA gene sequences and whole-genome assemblies

  Citation: 6500

  Authors: Seok-Hwan, Sung-Min, Soonjae, Jeongmin, Yeseul, Hyungseok, Jongsik

• Report of the Ad Hoc Committee on Reconciliation of Approaches to Bacterial Systematics

  Citation: 6093

  Authors: L. G., W. E. C., E., O., R. R., M. I., H. G., R. G. E., P. A. D., D. J., M. P., L. H.

• Approved Lists of Bacterial Names

  Citation: 5587

  Authors: V. B. D., P. H. A., VICKI

• Taxonomic Note: A Place for DNA-DNA Reassociation and 16S rRNA Sequence Analysis in the Present Species Definition in Bacteriology

  Citation: 5408

  Authors: E., B. M.

• Introducing EzTaxon-e: a prokaryotic 16S rRNA gene sequence database with phylotypes that represent uncultured species

  Citation: 4822

  Authors: Ok-Sun, Yong-Joon, Kihyun, Seok-Hwan, Mincheol, Hyunsoo, Sang-Cheol, Yoon Seong, Jae-Hak, Hana, Sungho, Jongsik

• DNA–DNA hybridization values and their relationship to whole-genome sequence similarities

  Citation: 4157

  Authors: Johan, Konstantinos T., Joel A., Tom, Peter, James M.

• A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae

  Citation: 3451

  Authors: Jinshui, Stijn, Elisa, Charles M.A.P., Hugh M.B., Paola, Paul W., Bruno, Peter, Jens, Koichi, Sander, Giovanna E., Michael G., Sarah

• Towards a taxonomic coherence between average nucleotide identity and 16S rRNA gene sequence similarity for species demarcation of prokaryotes

  Citation: 2710

  Authors: Mincheol, Hyun-Seok, Sang-Cheol, Jongsik

• Proposed minimal standards for the use of genome data for the taxonomy of prokaryotes

  Citation: 2673

  Authors: Jongsik, Aharon, Antonio, Henrik, David Ruiz, Milton S., Alejandro P., Hana, Xue-Wei, Sofie, Martha E.

• OrthoANI: An improved algorithm and software for calculating average nucleotide identity

  Citation: 2661

  Authors: Imchang, Yeong, Sang-Cheol, Jongsik

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