Posibacteria
Posibacteria est un embranchement du règne des bactéries. L'innovation évolutive correspondant aux posibactéries et qui les distingue des négibactéries est la disparition de la membrane externe et l'épaississement du peptidoglycane. Les posibactéries, en tant que taxon paraphylétique, comprennent les bactéries gram-positives (d'où le préfixe posi-) mais excluent les archébactéries et les eucaryotes.
Les posibactéries comprennent trois embranchements :
- Les Chlorobacteria
- Les Endobacteria
- Les Actinobacteria
| Posibacteria |
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- Position dans l’arbre phylogénétique du vivant
─o Bacteria ├─o Chlorobacteria └─o ├─o Hadobacteria └─o ├─o Cyanobacteria └─o ├─o Gracilicutes └─o Eurybacteria ├─o Togobacteria (ou Thermotogales) ├─o Selenobacteria │ ├─o Sporomusales │ └─o Heliobacteriales ├─o Fusobacteriales └─o Posibacteria
Notes et références
Liens externes
(fr + en) ITIS : Posibacteria Cavalier-Smith, 2002
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