A sweeping view of avian mycoplasmas biology drawn from comparative genomic analyses.
| Title: | A sweeping view of avian mycoplasmas biology drawn from comparative genomic analyses. |
|---|---|
| Authors: | Yacoub, Elhem, Baby, Vincent, Sirand-Pugnet, Pascal, Arfi, Yonathan, Mardassi, Helmi, Blanchard, Alain, Chibani, Salim, Ben Abdelmoumen Mardassi, Boutheina |
| Source: | BMC Genomics; 1/10/2025, Vol. 26 Issue 1, p1-28, 28p |
| Subject Terms: | COMPARATIVE genetics, MYCOPLASMATALES, COMPARATIVE genomics, GENOMICS, GENOME size, MYCOPLASMA gallisepticum |
| Abstract: | Background: Avian mycoplasmas are small bacteria associated with several pathogenic conditions in many wild and poultry bird species. Extensive genomic data are available for many avian mycoplasmas, yet no comparative studies focusing on this group of mycoplasmas have been undertaken so far. Results: Here, based on the comparison of forty avian mycoplasma genomes belonging to ten different species, we provide insightful information on the phylogeny, pan/core genome, energetic metabolism, and virulence of these avian pathogens. Analyses disclosed considerable inter- and intra-species genomic variabilities, with genome sizes that can vary by twice as much. Phylogenetic analysis based on concatenated orthologous genes revealed that avian mycoplasmas fell into either Hominis or Pneumoniae groups within the Mollicutes and could split into various clusters. No host co-evolution of avian mycoplasmas can be inferred from the proposed phylogenetic scheme. With 3,237 different gene clusters, the avian mycoplasma group under study proved diverse enough to have an open pan genome. However, a set of 150 gene clusters was found to be shared between all avian mycoplasmas, which is likely encoding essential functions. Comparison of energy metabolism pathways showed that avian mycoplasmas rely on various sources of energy. Superposition between phylogenetic and energy metabolism groups revealed that the glycolytic mycoplasmas belong to two distinct phylogenetic groups (Hominis and Pneumoniae), while all the arginine-utilizing mycoplasmas belong only to Hominis group. This can stand for different evolutionary strategies followed by avian mycoplasmas and further emphasizes the diversity within this group. Virulence determinants survey showed that the involved gene arsenals vary significantly within and between species, and could even be found in species often reported apathogenic. Immunoglobulin-blocking proteins were detected in almost all avian mycoplasmas. Although these systems are not exclusive to this group, they seem to present some particular features making them unique among mycoplasmas. Conclusion: This comparative genomic study uncovered the significant variable nature of avian mycoplasmas, furthering our knowledge on their biological attributes and evoking new hallmarks. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1186/s12864-024-11201-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 28 StartPage: 1 Subjects: – SubjectFull: COMPARATIVE genetics Type: general – SubjectFull: MYCOPLASMATALES Type: general – SubjectFull: COMPARATIVE genomics Type: general – SubjectFull: GENOMICS Type: general – SubjectFull: GENOME size Type: general – SubjectFull: MYCOPLASMA gallisepticum Type: general Titles: – TitleFull: A sweeping view of avian mycoplasmas biology drawn from comparative genomic analyses. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yacoub, Elhem – PersonEntity: Name: NameFull: Baby, Vincent – PersonEntity: Name: NameFull: Sirand-Pugnet, Pascal – PersonEntity: Name: NameFull: Arfi, Yonathan – PersonEntity: Name: NameFull: Mardassi, Helmi – PersonEntity: Name: NameFull: Blanchard, Alain – PersonEntity: Name: NameFull: Chibani, Salim – PersonEntity: Name: NameFull: Ben Abdelmoumen Mardassi, Boutheina IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 01 Text: 1/10/2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 14712164 Numbering: – Type: volume Value: 26 – Type: issue Value: 1 Titles: – TitleFull: BMC Genomics Type: main |
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