Frankineae is a suborder of the Actinomycetales

Actinomycetales

Actinomycetales is an order of Actinobacteria. They are very diverse and contain a variety of subdivisions as well as yet unclassified isolates. This is mainly because some genera are very difficult to classify because of a highly niche-dependent phenotype...

 order. Like all Actinobacteria

Actinobacteria

Actinobacteria are a group of Gram-positive bacteria with high guanine and cytosine content. They can be terrestrial or aquatic. Actinobacteria is one of the dominant phyla of the bacteria....

, the species are gram-positive

Gram-positive

Gram-positive bacteria are those that are stained dark blue or violet by Gram staining. This is in contrast to Gram-negative bacteria, which cannot retain the crystal violet stain, instead taking up the counterstain and appearing red or pink...

 with high G+C ratio. It is polyphyletic.

Taxonomy

Sub Order Frankiineae

• Family Acidothermaceae
  • Acidothermus
    Acidothermus
    Acidothermus is a genus in the phylum Actinobacteria .The genus contains a single species, namely A. cellulolyticus, which is thermophilic, acidophilic and cellulolytic...
    
    Mohagheghi et al. 1986
• Family Cryptosporangiaceae
  • Cryptosporangium
    Cryptosporangium
    Cryptosporangium is a genus in the phylum Actinobacteria .-Etymology:The name Cryptosporangium derives from:Gr . adj . kruptos, hidden; New Latin noun sporangium [from Greek noun spora , a seed , and Greek noun angeion , vessel], sporangium; New Latin neuter gender noun...
    
    Tamura et al. 1998
  • Fodinicola Carlsohn et al. 2008
• Family Frankiaceae
  • Frankia
    Frankia
    Frankia is a genus of nitrogen fixing, filamentous bacteria that live in symbiosis with actinorhizal plants, similar to the Rhizobia bacteria that are found in the root nodules of legumes in the Fabaceae family. Bacteria of this genus also form root nodules.The genus Frankia was originally named by...
    
    Brunchorst 1886
• Family Geodermatophilaceae
  • Actinotelluria♠ Bertazzo et al. 2005
  • Blastococcus Ahrens and Moll 1970 emend. Lee 2006
  • Geodermatophilus Luedemann 1968
  • Modestobacter Mevs et al. 2000 emend. Reddy et al. 2007
• Family Nakamurellaceae
  • Humicoccus Yoon et al. 2007
  • Nakamurella Tao et al. 2004
  • Saxeibacter Lee et al. 2008
• Family Sporichthyaceae
  • Sporichthya Lechevalier et al. 1968

Notes:

♠ Strain found at the National Center for Biotechnology Information

National Center for Biotechnology Information

The National Center for Biotechnology Information is part of the United States National Library of Medicine , a branch of the National Institutes of Health. The NCBI is located in Bethesda, Maryland and was founded in 1988 through legislation sponsored by Senator Claude Pepper...

 (NCBI) but has no standing with the Bacteriological Code (1990 and subsequent Revision) as detailed by List of Prokaryotic names with Standing in Nomenclature (LPSN) as a result of the following reasons:

• No pure culture isolated or available for Prokayotes.

• Not validly published because the effective publication only documents deposit of the type strain in a single recognized culture collection.

• Not approved and published by the International Journal of Systematic Bacteriology  or the International Journal of Systematic and Evolutionary Microbiology

International Journal of Systematic and Evolutionary Microbiology

The International Journal of Systematic and Evolutionary Microbiology is a peer-reviewed scientific journal in the field of microbial systematics, first published in 1951...

(IJSB/IJSEM).