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#bacterial taxonomy

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Microbial Classification

The second edition of Bergey’s Manual has

The second edition of Bergey's Manual of Systematic Bacteriology expanded to five volumes published between 2001 and 2012 to accommodate explosive growth of 16S rRNA phylogeny and genomic taxonomy. Volume 1 covers introductory essays on systematics, Volume 2 Proteobacteria, Volume 3 Firmicutes, Volume 4 Bacteroidetes, Spirochaetes, Tenericutes and allied phyla, Volume 5 Actinobacteria and Archaea. This reorganization shifted from phenotype-based clustering to molecular phylogenetic framework, reflecting deeper understanding of monophyletic groups and necessitating additional volume beyond original four-volume first edition for comprehensive coverage.

Ref: Auraria Library Guide 2nd edition five volumes overview; Springer Bergey's Manual Systematic Bacteriology publication history 2001-2012

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Microbial Classification

Mendosicutes are similar to

Mendosicutes was historically proposed term for organisms with defective or faulty cell walls lacking muramic acid-based peptidoglycan, encompassing what are now recognized as Archaea. These prokaryotes possess ether-linked isoprenoid lipids, pseudomurein or proteinaceous S-layers, and distinctive 16S rRNA signatures diverging from eubacteria. Physiologically they include methanogens, extreme halophiles, and thermoacidophiles. Modern phylogeny reclassified Mendosicutes into domain Archaea, sharing prokaryotic organization but transcription and translation machinery closer to Eukarya, explaining similarity cited in early classification schemes focused specifically on wall chemistry evolution.

Ref: Woese et al. 1977 archaebacteria Mendosicutes definition; Bergey's Manual Volume 3 Archaeobacteria; NCBI Bookshelf Archaea ether lipids pseudomurein

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