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TEM - Epixenosomes.jpg
Transmission electron micrograph of stage II epixenosomes.
Scientific classification e
Domain: Bacteria
Phylum: Verrucomicrobia
Hedlund 2012
  • Verrucomicrobaeota Oren et al. 2015

Verrucomicrobia is a phylum of Gram-negative bacteria that contains only a few described species. The species identified have been isolated from fresh water, marine and soil environments and human faeces. A number of as-yet uncultivated species have been identified in association with eukaryotic hosts including extrusive explosive ectosymbionts of protists and endosymbionts of nematodes residing in their gametes.[]

Verrucomicrobia are abundant within the environment, though relatively inactive.[1] This phylum is considered to have two sister phyla: Chlamydiae and Lentisphaerae within the PVC group.[2] The Verrucomicrobia phylum can be distinguished from neighbouring phyla within the PVC group by the presence of several conserved signature indels (CSIs).[3] These CSIs represent unique, synapomorphic characteristics that suggest common ancestry within Verrucomicrobia and an independent lineage amidst other bacteria.[4] CSIs have also been found that are shared by Verrucomicrobia and Chlamydiae exclusively of all other bacteria.[5] These CSIs provide evidence that Chlamydiae is the closest relative to Verrucomicrobia, and that they are more closely related to one another than to the Planctomycetales.

Verrucomicrobia might belong in the clade Planctobacteria in the larger clade Gracilicutes.[6]

In 2008, the whole genome of Methylacidiphilum infernorum (2.3 Mbp) was published. On the single circular chromosome, 2473 predicted proteins were found, 731 of which had no detectable homologs. These analyses also revealed many possible homologies with Proteobacteria.[7][8]


The phylogeny based on the work of the All-Species Living Tree Project.[9]


P. croceus

P. mobilis (type sp.)

P. albus

P. litoralis


Limisphaera ngatamarikiensis


Terrimicrobium sacchariphilum

Verrucomicrobium spinosum

Roseimicrobium gellanilyticum


Brevifollis gellanilyticus

P. algae

P. dejongeii

P. debontii

P. fusiformis (type sp.)

Akkermansia muciniphila


L. cuticulihirudinis

L. pohnpeiensis (type sp.)

L. algae

L. luojiensis

L. yonseiensis


H. luteola

H. sargassicola

H. helveola

H. phyci

H. harenae

H. chungangensis

H. rosea (type sp.)


R. persicicus

R. ishigakijimensis (type sp.)

R. ponti

Persicirhabdus sediminis


R. sabuli

R. marina (type sp.)

R. spongiae

R. tangerina


The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LSPN)[10] and the National Center for Biotechnology Information (NCBI).[11]

? Strain found at the National Center for Biotechnology Information (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:


  1. ^ White, Richard Allen; Bottos, Eric M.; Roy Chowdhury, Taniya; Zucker, Jeremy D.; Brislawn, Colin J.; Nicora, Carrie D.; Fansler, Sarah J.; Glaesemann, Kurt R.; Glass, Kevin; Jansson, Janet K. (2016-06-28). Langille, Morgan (ed.). "Moleculo Long-Read Sequencing Facilitates Assembly and Genomic Binning from Complex Soil Metagenomes". mSystems. 1 (3): mSystems.00045-16, e00045-16. doi:10.1128/mSystems.00045-16. ISSN 2379-5077. PMC 5069762. PMID 27822530.
  2. ^ Cho J, Vergin K, Morris R, Giovannoni S (2004). "Lentisphaera araneosa gen. nov., sp. nov, a transparent exopolymer producing marine bacterium, and the description of a novel bacterial phylum, Lentisphaerae". Environ Microbiol. 6 (6): 611-21. doi:10.1111/j.1462-2920.2004.00614.x. PMID 15142250.
  3. ^ Gupta RS, Bhandari V, Naushad HS (2012). "Molecular Signatures for the PVC Clade (Planctomycetes, Verrucomicrobia, Chlamydiae, and Lentisphaerae) of Bacteria Provide Insights into Their Evolutionary Relationships". Front Microbiol. 3: 327. doi:10.3389/fmicb.2012.00327. PMC 3444138. PMID 23060863.
  4. ^ Gupta RS (2016). "Impact of genomics on the understanding of microbial evolution and classification: the importance of Darwin's views on classification". FEMS Microbiol Rev. 40 (4): 520-53. doi:10.1093/femsre/fuw011. PMID 27279642.
  5. ^ Griffiths E, Gupta RS (2007). "Phylogeny and shared conserved inserts in proteins provide evidence that Verrucomicrobia are the closest known free-living relatives of chlamydiae". Microbiology. 153 (Pt 8): 2648-54. doi:10.1099/mic.0.2007/009118-0. PMID 17660429. S2CID 2094762.
  6. ^ Wagner, M; Horn, M (2006). "The Planctomycetes, Verrucomicrobia, Chlamydiae and sister phyla comprise a superphylum with biotechnological and medical relevance". Current Opinion in Biotechnology. 17 (3): 241-9. doi:10.1016/j.copbio.2006.05.005. PMID 16704931.
  7. ^ Hou, S; Makarova, KS; Saw, JH; Senin, P; Ly, BV; Zhou, Z; Ren, Y; Wang, J; Galperin, MY; Omelchenko, Marina V; Wolf, Yuri I; Yutin, Natalya; Koonin, Eugene V; Stott, Matthew B; Mountain, Bruce W; Crowe, Michelle A; Smirnova, Angela V; Dunfield, Peter F; Feng, Lu; Wang, Lei; Alam, Maqsudul (2008). "Complete genome sequence of the extremely acidophilic methanotroph isolate V4, Methylacidiphilum infernorum, a representative of the bacterial phylum Verrucomicrobia". Biology Direct. 3: 26. doi:10.1186/1745-6150-3-26. PMC 2474590. PMID 18593465.
  8. ^ Ludwig, W., Euzéby, J., & Whitman W.B. (2008). "Bergey's Taxonomic Outlines: Volume 4 - Draft Taxonomic Outline of the Bacteroidetes, Planctomycetes, Chlamydiae, Spirochaetes, Fibrobacteres, Fusobacteria, Acidobacteria, Verrucomicrobia, Dictyoglomi, and Gemmatimonadetes" (PDF). Bergey's Manual Trust: 15. Archived from the original (PDF) on 2016-11-08. Retrieved .CS1 maint: multiple names: authors list (link)
  9. ^ "16S rRNA-based LTP release 123 (full tree)" (PDF). Silva Comprehensive Ribosomal RNA Database. Retrieved .
  10. ^ J.P. Euzéby. "Verrucomicrobia". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved .
  11. ^ Sayers; et al. "Verrucomicrobia". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved .

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