[1] The Acetobacteraceae comprise the acetic acid bacteria, which are heterotrophic and produce acetic acid during their respiration.

[2] The Rhodospirillaceae include mainly purple nonsulfur bacteria, which produce energy through photosynthesis.

[2] The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN).

[1] The phylogeny is based on whole-genome analysis.

[3][a] Zavarziniaceae Azospirillaceae Stellaceae Reyranellaceae Acetobacteraceae Rhodospirillaceae Thalassospiraceae Terasakiellaceae Kiloniellaceae Rhodovibrionaceae Thalassobaculaceae Rhodothalassiales