Classification of Microorganisms (Bergey's Manual) | Short Notes

• The Bergey’s Manual of Systematic Bacteriology is the main resource for determining the identity of bacteria species, utilizing every characterizing aspect.
• First published in 1923 by David Hendricks Bergey, it is used to classify bacteria based on their structural and functional attributes by arranging them into specific familial orders.
• It was published in four volumes
• Volume 1 included information on all types of Gram-negative bacteria that were considered to have "medical and industrial importance."
• Volume 2 included information on all types of Gram-positive bacteria.
• Volume 3 deals with all of the remaining, slightly different Gram-negative bacteria, along with the archaea.
• Volume 4 has information on filamentous actinomycetes and other, similar bacteria
• Bergey Division I = The Cyanobacteria (formerly the blue-green alga) - These bacteria can use light as their energy source under aerobic conditions. The use carbon dioxide and produce oxygen.
• Bergey Division II = The Bacteria (includes the photobacteria and all other classical bacteria) - See the 19 parts below.
• Archeobacteria = in the 8th Edition (1974) the archeobacteria were mixed within the 19 parts of the book. I have not yet decided how to handle these bacteria.

The Bergey Classification of Bacteria into 19 parts.

1. Phototrophic Bacteria: Rhodospirillum - Rhodopseudomonas - Chromatium
2. Gliding Bacteria: Myxococcus - Beggiatoa - Simonsiella - Leucothrix
3. Sheathed Bacteria: Sphaerotilus - Leptothrix
4. Budding / Appendaged Bacteria: Caulobacter - Gallionella
5. Spirochetes: Spirochaeta - Treponema - Borrelia
6. Spiral and Curved Bacteria: Spirillum - Auqaspirillum - Oceanospirillum - Bdellovibrio
7. Gram-negative Aerobic Rods and Cocci: Pseudomonas - Xanthanomonas - Zoogloea - Gluconobacter - Azotobacter - Rhizobium - Agrobacterium - Halobacterium - Acetobacter
8. Gram-Negative Facultative Anaerobic Rods: Escherichia - Citrobacter - Salmonella - Shigella - Klebsiella - Enterobacter - Serratia - Proteus - Yersinia - Erwinia - Vibrio - Aeromonas - Zymomonas - Chromobacterium - Flavobacterium -
9. Gram-negative anaerobes: Bacteriodes - Fusobacterium - Desulfovibrio - Succinimonas
10. Gram-Negative cocci: Nisseria - Branhamella - Acinetobacter - Paracoccus
11. Gram-negative anaerobic cocci: Veillonella - Acidaminococcus
12. Gram-Negative Chemolithotrophic: Nitrobacter - Thiobacillus - Siderocapsa
13. Methane producing: methanogens
14. Gram-Positive Cocci: Micrococcus - Staphylococcus - Streptococcus - Leuconostoc - Pediococcus - Aerococcus - Peptococcus - Ruminococcus - Sarcina
15. Endospore-forming Rods and cocci: Bacillus - Clostridium - Sporosarcina
16. Gram-positive, non-sporing rods: Lactobacillus - Listeria - Erysipelothrix - Caryophanon
17. Actinomycetes and Related: Corynebacterium - Arthobacter - Brevibacterium - Cellumonas - Kurthia - Propionibacterium - Eubacterium - Actinomyces - Archina - Bifidiobacterium - Rothia - Mycobacterium - Frankia - Streptosporangia - Nocardia - Streptomyces - Streptoverticillium - Micromonospora
18. Rickettsias: Rickettsia - Erhlichia - Wollbachia - Bartonella - Chlamydia
19. Mycoplasmas: Mycoplasma - Acoleplasma - Thermplasma – Spiroplasma