Editing Acidobacteriota

{{Short description|Phylum of bacteria}}
{{automatic taxobox
| image = Acidobacterium.jpg
| image_caption = ''Acidobacterium'' cf. ''capsulatum''
| taxon = Acidobacteriota
| authority = Thrash and Coates 2021<ref>{{cite journal | vauthors = Oren A, Garrity GM | title = Valid publication of the names of forty-two phyla of prokaryotes | journal = Int J Syst Evol Microbiol | year = 2021 | volume = 71 | issue = 10 | pages = 5056 | doi = 10.1099/ijsem.0.005056 | pmid = 34694987 | s2cid = 239887308 | doi-access = free }}</ref>
| type_genus = ''[[Acidobacterium]]''
| type_genus_authority = Kishimoto et al. 1991
| subdivision_ranks = Classes<ref name="LPSN">{{cite web | vauthors = Euzéby JP, Parte AC | url = https://lpsn.dsmz.de/phylum/acidobacteriota | title = ''Acidobacteriota'' | access-date = May 6, 2022 | publisher = [[List of Prokaryotic names with Standing in Nomenclature]] (LPSN)}}</ref>
| subdivision = 
* "[[Acidobacteriia]]"
* [[Blastocatellia]]
* "''Ca.'' [[Guanabacteria]]"
* [[Holophagae]]
* "''Ca.'' [[Polarisedimenticolia]]"
* [[Thermoanaerobaculia]]
* [[Vicinamibacteria]]
| synonyms =
* "Acidobacteria" <small>Thrash and Coates 2010</small><ref>{{cite journal | year = 2012 | title = Validation List no. 143 | doi = 10.1099/ijs.0.68147-0 | journal = Int. J. Syst. Evol. Microbiol. | volume = 62 | pages = 1–4 }}</ref>
* "Acidobacteraeota" <small>Oren ''et al''. 2015</small>
* "Acidobacteriota" <small>Whitman ''et al''. 2018</small>
}}

'''Acidobacteriota''' is a [[phylum]] of [[Gram-negative]] [[bacteria]]. Its members are physiologically diverse and ubiquitous, especially in soils, but are under-represented in culture.<ref name="Barns2007">{{cite journal |author=Barns SM |author2= Cain EC |author3=Sommerville L |author4=Kuske CR |title=''Acidobacteria'' phylum sequences in uranium-contaminated subsurface sediments greatly expand the known diversity within the phylum |journal=Appl. Environ. Microbiol. |volume=73 |issue=9 |pages=3113–6 |date=2007 |pmid=17337544 |doi=10.1128/AEM.02012-06 |pmc=1892891|bibcode= 2007ApEnM..73.3113B }}</ref><ref name=Quaiser>{{cite journal |author=Quaiser A |author2=Ochsenreiter T |author3=Lanz C |title=''Acidobacteria'' form a coherent but highly diverse group within the bacterial domain: evidence from environmental genomics |journal=Mol. Microbiol. |volume=50 |issue=2 |pages=563–75 |date=2003 |pmid=14617179 |doi=10.1046/j.1365-2958.2003.03707.x|s2cid=25162803 |display-authors=etal}}</ref><ref name="Rappe">{{Cite journal
| last1 = Rappe | first1 = M. S.
| last2 = Giovannoni | first2 = S. J.
| title = The Uncultured Microbial Majority
| journal = Annual Review of Microbiology
| volume = 57
| pages = 369–394
| date = 2003
| pmid = 14527284
| doi = 10.1146/annurev.micro.57.030502.090759
}}</ref>

==Description==
Members of this phylum are physiologically diverse, and can be found in a variety of environments including soil, decomposing wood,<ref>{{Cite journal|last1=Tláskal|first1=Vojtěch|last2=Baldrian|first2=Petr|date=2021-06-17|title=Deadwood-Inhabiting Bacteria Show Adaptations to Changing Carbon and Nitrogen Availability During Decomposition|journal=Frontiers in Microbiology|volume=12|pages=685303| pmid=34220772 | doi=10.3389/fmicb.2021.685303 |pmc=8247643|issn=1664-302X|doi-access=free}}</ref> [[hot spring]]s, oceans, caves, and metal-contaminated soils.<ref name=Bergey>{{cite book|title=Bergey's Manual of Systematics of Archaea and Bacteria |pages=1–5 |chapter=''Acidobacteria'' phyl. nov. |date=2015 |doi=10.1002/9781118960608.pbm00001 |vauthors=Thrash JC, Coates JD |editor=Whitman WB |publisher=John Wiley & Sons|isbn=9781118960608 }}</ref> The members of this phylum are particularly abundant in soil habitats representing up to 52% of the total bacterial community.<ref>{{Cite journal|title=Empirical and Theoretical Bacterial Diversity in Four Arizona Soils|author=Dunbar, John|author2=Barns, Susan M.|author3=Ticknor, Lawrence O.|author4=Kuske, Cheryl R.|journal=Applied and Environmental Microbiology|year=2002|volume=68|issue=6|pages=3035–3045|publisher=American Society for Microbiology|doi=10.1128/AEM.68.6.3035-3045.2002|pmid=12039765|pmc=123964|bibcode=2002ApEnM..68.3035D |oclc=679526952}}</ref> Environmental factors such as pH and nutrients have been seen to drive Acidobacteriota dynamics.<ref name=":022">{{Cite journal|last1=Kielak|first1=Anna M.|last2=Barreto|first2=Cristine C.|last3=Kowalchuk|first3=George A.|last4=van Veen|first4=Johannes A.|last5=Kuramae|first5=Eiko E.|date=2016-05-31|title=The Ecology of ''Acidobacteria'': Moving beyond Genes and Genomes|journal=Frontiers in Microbiology|volume=7|pages=744|doi=10.3389/fmicb.2016.00744|pmid=27303369|issn=1664-302X|pmc=4885859|doi-access=free}}</ref><ref>{{Cite journal|last1=Jones|first1=Ryan T|last2=Robeson|first2=Michael S|last3=Lauber|first3=Christian L|last4=Hamady|first4=Micah|last5=Knight|first5=Rob|last6=Fierer|first6=Noah|date=2009-01-08|title=A comprehensive survey of soil acidobacterial diversity using pyrosequencing and clone library analyses|journal=The ISME Journal|volume=3|issue=4|pages=442–453|doi=10.1038/ismej.2008.127|pmid=19129864|issn=1751-7362|pmc=2997719|bibcode=2009ISMEJ...3..442J }}</ref><ref>{{Cite journal|last1=Fierer|first1=Noah|last2=Bradford|first2=Mark A.|last3=Jackson|first3=Robert B.|s2cid=7687418|date=June 2007|journal=Ecology|volume=88|issue=6|pages=1354–1364|doi=10.1890/05-1839|pmid=17601128|issn=0012-9658|title=Toward an Ecological Classification of Soil Bacteria|bibcode=2007Ecol...88.1354F }}</ref> Many Acidobacteriota are [[Acidophile|acidophilic]], including the first described member of the phylum, ''[[Acidobacterium capsulatum]]''.<ref name="Kuske1997">{{cite journal |author=Kuske CR |author2=Barns SM |author3=Busch JD |title=Diverse uncultivated bacterial groups from soils of the arid southwestern United States that are present in many geographic regions |journal=Appl. Environ. Microbiol. |volume=63 |issue=9 |pages=3614–21 |date=1 September 1997|doi=10.1128/AEM.63.9.3614-3621.1997 |pmid=9293013 |pmc=168668 |bibcode=1997ApEnM..63.3614K }}</ref>

There is much that is unknown about Acidobacteria both in their form and function. Thus, this is a growing field of microbiology. Some of this uncertainty can be attributed to the difficulty with which these bacteria are grown in the laboratory. There has been recent success in propagation by using low concentrations of nutrients in combination with high amounts of CO<sub>2</sub>,<ref name=":022" /> yet, progress is still quite slow. These new methods have only allowed approximately 30% of subdivisions to have species documented.<ref name=":022" />

Additionally, many of the samples sequenced do not have taxonomic names as they have not yet been fully characterized. This area of study is a very current topic, and scientific understanding is expected to grow and change as new information comes to light.

Other notable species are ''[[Holophaga foetida]]'',<ref name="pmid8085918">{{cite journal|last=Liesack|first=Werner|author2=Bak, Friedhelm|author3= Kreft, Jan-Ulrich|author4= Stackebrandt, E.|title=Holophaga foetida gen. nov., sp. nov., a new, homoacetogenic bacterium degrading methoxylated aromatic compounds|journal=Archives of Microbiology|date=30 June 1994|volume=162|issue=1–2|pages=85–90|doi=10.1007/BF00264378|pmid=8085918|bibcode=1994ArMic.162...85L |s2cid=23516245}}</ref> ''[[Geothrix fermentans]]'',<ref name="pmid10555343">{{cite journal|last=Coates|first=J. D.|author2=Ellis, D. J.|author3= Gaw, C. V.|author4= Lovley, D. R.|title=Geothrix fermentans gen. nov., sp. nov., a novel Fe(III)-reducing bacterium from a hydrocarbon-contaminated aquifer|journal=International Journal of Systematic Bacteriology|date=1 October 1999|volume=49|issue=4|pages=1615–1622|doi=10.1099/00207713-49-4-1615|pmid=10555343|doi-access=free}}</ref> ''[[Acanthopleuribacter pedis]]''<ref name="pmid18984699">{{cite journal|last=Fukunaga|first=Y|author2=Kurahashi, M|author3= Yanagi, K|author4= Yokota, A|author5= Harayama, S|title=Acanthopleuribacter pedis gen. nov., sp. nov., a marine bacterium isolated from a chiton, and description of Acanthopleuribacteraceae fam. nov., Acanthopleuribacterales ord. nov., Holophagaceae fam. nov., Holophagales ord. nov. and Holophagae classis nov. in the phylum 'Acidobacteria'|journal=International Journal of Systematic and Evolutionary Microbiology|date=November 2008|volume=58|issue=Pt 11|pages=2597–2601|doi=10.1099/ijs.0.65589-0|pmid=18984699|doi-access=free}}</ref> and ''[[Bryobacter aggregatus]]''.<ref name="pmid19651730">{{cite journal|last=Kulichevskaya|first=IS|author2=Suzina, NE|author3= Liesack, W|author4= Dedysh, SN|title=''Bryobacter aggregatus'' gen. nov., sp. nov., a peat-inhabiting, aerobic chemo-organotroph from subdivision 3 of the ''Acidobacteria''|journal=International Journal of Systematic and Evolutionary Microbiology|date=February 2010|volume=60|issue=Pt 2|pages=301–6|doi=10.1099/ijs.0.013250-0|pmid=19651730}}</ref>
Since they have only recently been discovered and the large majority have not been cultured, the [[ecology]] and [[metabolism]] of these bacteria is not well understood.<ref name=Quaiser/> However, these bacteria may be an important contributor to [[ecosystem]]s, since they are particularly abundant within [[soil]]s.<ref name="Eichorst2007">{{cite journal |author=Eichorst SA |author2=Breznak JA |author3=Schmidt TM |title=Isolation and characterization of soil bacteria that define ''Terriglobus'' gen. nov., in the phylum ''Acidobacteria'' |journal=Appl. Environ. Microbiol. |volume=73 |issue=8 |pages=2708–17 |date=2007 |pmid=17293520 |doi=10.1128/AEM.02140-06 |pmc=1855589|bibcode=2007ApEnM..73.2708E }}</ref> Members of subdivisions 1, 4, and 6 are found to be particularly abundant in soils.<ref>{{Cite journal|last=Janssen|first=P. H.|date=2006-03-01|title=Identifying the Dominant Soil Bacterial Taxa in Libraries of 16S rRNA and 16S rRNA Genes|journal=Applied and Environmental Microbiology|volume=72|issue=3|pages=1719–1728|doi=10.1128/aem.72.3.1719-1728.2006|pmid=16517615|issn=0099-2240|pmc=1393246|bibcode=2006ApEnM..72.1719J }}</ref>

As well as their natural soil habitat, unclassified subdivision 2 Acidobacteriota have also been identified as a contaminant of DNA extraction kit reagents, which may lead to their erroneous appearance in microbiota or metagenomic datasets.<ref>{{Cite journal|last1=Salter|first1=Susannah J.|last2=Cox|first2=Michael J.|last3=Turek|first3=Elena M.|last4=Calus|first4=Szymon T.|last5=Cookson|first5=William O.|last6=Moffatt|first6=Miriam F.|last7=Turner|first7=Paul|last8=Parkhill|first8=Julian|last9=Loman|first9=Nicholas J.|date=2014-01-01|title=Reagent and laboratory contamination can critically impact sequence-based microbiome analyses|journal=BMC Biology|volume=12|pages=87|doi=10.1186/s12915-014-0087-z|issn=1741-7007| pmc=4228153 |pmid=25387460 |doi-access=free }}</ref>

Members of subdivision 1 have been found to dominate in low pH conditions.<ref>{{Cite journal|last1=Sait|first1=M.|last2=Davis|first2=K. E. R.|last3=Janssen|first3=P. H.|date=2006-03-01|title=Effect of pH on Isolation and Distribution of Members of Subdivision 1 of the Phylum ''Acidobacteria'' Occurring in Soil|journal=Applied and Environmental Microbiology|volume=72|issue=3|pages=1852–1857|doi=10.1128/aem.72.3.1852-1857.2006|pmid=16517631|pmc=1393200|bibcode=2006ApEnM..72.1852S |issn=0099-2240}}</ref><ref name=":022"/> Additionally, Acidobacteriota from acid mine drainage have been found to be more adapted to acidic pH conditions (pH 2–3) compared to Acidobacteriota from soils,<ref>{{Cite journal|last1=Kleinsteuber|first1=Sabine|last2=Müller|first2=Frank-Dietrich|last3=Chatzinotas|first3=Antonis|last4=Wendt-Potthoff|first4=Katrin|last5=Harms|first5=Hauke|date=January 2008|title=Diversity and ''in situ'' quantification of ''Acidobacteria'' subdivision 1 in an acidic mining lake|journal=FEMS Microbiology Ecology|volume=63|issue=1|pages=107–117|doi=10.1111/j.1574-6941.2007.00402.x|pmid=18028401|bibcode=2008FEMME..63..107K |issn=0168-6496|doi-access=free}}</ref> potentially due to cell specialization and enzyme stability.<ref name=":022"/>

The [[GC-content|G+C content]] of Acidobacteria genomes are consistent within their subdivisions - above 60% for group V fragments and roughly 10% lower for group III fragments.<ref name=Quaiser/>

The majority of Acidobacteriota are considered [[aerobes]].<ref>{{Cite book|title=Influence of Plant Polymers on the Distribution and Cultivation of Bacteria in the Phylum ''Acidobacteria'' ▿ †|last=Eichorst, Stephanie A. Kuske, Cheryl R. Schmidt, Thomas M.|publisher=American Society for Microbiology (ASM)|oclc=744821434}}</ref><ref name=":03">{{Cite book|title=Genomic insights into the ''Acidobacteria'' reveal strategies for their success in terrestrial environments.|last=Eichorst, Stephanie A. Trojan, Daniela. Roux, Simon. Herbold, Craig. Rattei, Thomas. Woebken, Dagmar.|oclc=1051354840}}</ref> There are some Acidobacteriota that are considered [[anaerobes]] within subdivision 8<ref name="pmid10555343"/> and subdivision 23.<ref>{{Cite journal|last1=Losey|first1=N. A.|last2=Stevenson|first2=B. S.|last3=Busse|first3=H.-J.|last4=Damste|first4=J. S. S.|last5=Rijpstra|first5=W. I. C.|last6=Rudd|first6=S.|last7=Lawson|first7=P. A.|s2cid=32574193|date=2013-06-14|title=''Thermoanaerobaculum aquaticum'' gen. nov., sp. nov., the first cultivated member of ''Acidobacteria'' subdivision 23, isolated from a hot spring|journal=International Journal of Systematic and Evolutionary Microbiology|volume=63|issue=Pt 11|pages=4149–4157|doi=10.1099/ijs.0.051425-0|pmid=23771620|issn=1466-5026}}</ref> It has been found that some strains of Acidobacteriota originating from soils have the genomic potential to respire oxygen at atmospheric and sub-atmospheric concentrations.<ref name=":03"/>

Members of the ''Acidobacteriota'' phylum have been considered oligotrophic bacteria due to high abundances in low organic carbon environments.<ref name=":022"/> However, the variation in this phylum may indicate that they may not have the same ecological strategy.<ref name=":022"/>

==History==
The first species, ''[[Acidobacterium capsulatum]]'', of this phylum was discovered in 1991.<ref>{{cite journal|last=Kishimoto|first=Noriaki|author2=Kosako, Yoshimasa|author3= Tano, Tatsuo|title=Acidobacterium capsulatum gen. nov., sp. nov.: An acidophilic chemoorganotrophic bacterium containing menaquinone from acidic mineral environment|journal=Current Microbiology|date=31 December 1990|volume=22|issue=1|pages=1–7|doi=10.1007/BF02106205|s2cid=20636659}}</ref> However, Acidobacteriota were not recognized as a distinct clade until 1997,<ref name="Kuske1997"/> and were not recognized as a phylum until 2012.<ref name=Euzeby>{{cite web|url=http://www.bacterio.net/-aboveclass.html#acidobacteria |title=Taxa above the rank of class - Acidobacteria |website=LPSN |author=Euzeby JP |access-date=26 November 2017}}</ref> First genome was sequenced in 2006.<ref>{{Cite web |title=Genome List - Genome - NCBI |url=https://www.ncbi.nlm.nih.gov/genome/browse#!/prokaryotes/Acidobacteria |access-date=2022-06-19 |website=www.ncbi.nlm.nih.gov}}</ref>

== Subdivisions ==
In an effort to further classify Acidobacteria, 16S rRNA gene regions were sequenced from many different strains. These sequences lead to the formation of subdivisions within the phyla. Today, there are 26 accepted subdivisions recognized in the Ribosomal Database Project.<ref name=":022" />

Much of this variety comes from populations of acidobacteria found in soils contaminated with uranium. Therefore, most of the known species in this phyla are concentrated in a few of the subdivisions, the largest being #1. Most of these microbes are aerobes, and they are all heterotrophic. Subdivision 1 contains 11 of the known genera in addition to the majority of the species that have been able to be cultivated thus far.<ref name=":022" />

Within the 22 known genera, there are 40 conclusive species. The genera are divided amongst subdivisions 3, 4, 8, 10, 23, and 1. As the Acidobateria are a developing area of microbiology, it is hypothesized that these numbers will change drastically with further study.<ref name=":022" />

== Metabolism ==

=== Carbon ===
Some members of subdivision 1 are able to use [[glucose|<small>D</small>-glucose]], [[xylose|<small>D</small>-xylose]], and [[lactose]] as carbon sources,<ref name=":022"/> but are unable to use [[fucose]] or [[sorbose]].<ref>{{Cite journal|last1=Li|first1=Zijie|last2=Gao|first2=Yahui|last3=Nakanishi|first3=Hideki|last4=Gao|first4=Xiaodong|last5=Cai|first5=Li|date=2013-11-12|title=Biosynthesis of rare hexoses using microorganisms and related enzymes|journal=Beilstein Journal of Organic Chemistry|volume=9|pages=2434–2445|doi=10.3762/bjoc.9.281|pmid=24367410|issn=1860-5397|doi-access=free|pmc=3869271}}</ref> Members of subdivision 1 also contain enzymes such as [[galactosidases]] used in the breakdown of sugars.<ref name=":022"/> Members of subdivision 4 have been found to use [[chitin]] as a carbon source.<ref>{{Cite journal|last1=Huber|first1=K. J.|last2=Wust|first2=P. K.|last3=Rohde|first3=M.|last4=Overmann|first4=J.|last5=Foesel|first5=B. U.|date=2014-02-26|title=''Aridibacter famidurans'' gen. nov., sp. nov. and ''Aridibacter kavangonensis'' sp. nov., two novel members of subdivision 4 of the ''Acidobacteria'' isolated from semiarid savannah soil|journal=International Journal of Systematic and Evolutionary Microbiology|volume=64|issue=Pt 6|pages=1866–1875|doi=10.1099/ijs.0.060236-0|pmid=24573163|issn=1466-5026|hdl=10033/344212|hdl-access=free}}</ref><ref>{{Cite journal|last1=Foesel|first1=Bärbel U.|last2=Rohde|first2=Manfred|last3=Overmann|first3=Jörg|date=March 2013|title=''Blastocatella fastidiosa'' gen. nov., sp. nov., isolated from semiarid savanna soil – The first described species of ''Acidobacteria'' subdivision 4|journal=Systematic and Applied Microbiology|volume=36|issue=2|pages=82–89|doi=10.1016/j.syapm.2012.11.002|pmid=23266188|issn=0723-2020}}</ref><ref name=":022"/>

Despite the presence of genetic information generally known to encode for carbohydrate processing machinery in various genera of Acidobacteria, several experimental studies have demonstrated the inability to break down various polysaccharides.<ref name=":022" />

Cellulose is the main component of plant cell walls and a seemingly opportune resource for carbon. However, only a single species across all subdivisions has been shown to process it, ''Telmactobacter bradus'' from subvision 1. Scientists note that it is much too early in their understanding of the field to draw conclusions about carbon processing in Acidobacteria, but believe that xylan degradation (a polysaccharide primarily found in the secondary cell wall of plants) currently appears to be the most universal carbon breakdown ability.<ref name=":022" />

Researchers believe that an additional factor in the lack of understanding of carbon degradation by acidobacteria may stem from the present limited ability to provide adequate cultivation conditions.<ref name=":022" /> To study the natural behavior of these bacteria, they must grow and live in a controlled, observable environment. If such a habitat cannot be provided, recorded data cannot reliably report on the activity of the microbes in question. Therefore, the inconsistencies between genome sequence based predictions and observed carbon processes may be explained by present study methods.

=== Nitrogen ===
There has been no clear evidence that Acidobacteriota are involved in nitrogen-cycle processes such as [[nitrification]], [[denitrification]], or [[nitrogen fixation]].<ref name=":022"/> However, ''[[Geothrix fermentans|Geothrix fermantans]]'' was shown to be able to reduce nitrate and contained the norB gene.<ref name=":022"/> The NorB gene was also identified in ''[[Koribacter versatilis|Koribacter verstailis]]'' and ''[[Solibacter usitatus]]''.<ref>{{Cite journal|last1=Coates|first1=J. D.|last2=Ellis|first2=D. J.|last3=Gaw|first3=C. V.|last4=Lovley|first4=D. R.|date=1999-10-01|title=Geothrix fermentans gen. nov., sp. nov., a novel Fe(III)-reducing bacterium from a hydrocarbon-contaminated aquifer|journal=International Journal of Systematic Bacteriology|volume=49|issue=4|pages=1615–1622|doi=10.1099/00207713-49-4-1615|pmid=10555343|issn=0020-7713|doi-access=free}}</ref><ref name=":022"/> In addition, the presence of the nirA gene has been observed in members of subdivision 1.<ref name=":022"/> Additionally, to date, all genomes have been described to directly uptake ammonium via ammonium channel transporter family genes.<ref name=":03"/><ref name=":022"/> Acidobacteriota can use both inorganic and organic nitrogen as their nitrogen sources.

==Phylogeny==
The currently accepted taxonomy is based on the [[List of Prokaryotic names with Standing in Nomenclature]]<ref name="LPSN"/> and [[National Center for Biotechnology Information]].<ref>{{cite web |author = Sayers| url=https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Undef&id=57723&lvl=3&lin=f&keep=1&srchmode=1&unlock |title=Acidobacteriota |access-date=2021-03-20 |publisher=[[National Center for Biotechnology Information]] (NCBI) taxonomy database |display-authors=etal}}</ref>

{| class="wikitable"
|-
! colspan=1 | [[16S rRNA]] based phylogeny<ref name="D&Y">{{cite journal | vauthors = Dedysh SN, Yilmaz P | title = Refining the taxonomic structure of the phylum ''Acidobacteria'' | journal = Int J Syst Evol Microbiol | year = 2018 | volume = 68 | issue = 12 | pages = 3796–3806 | doi = 10.1099/ijsem.0.003062 | pmid = 30325293| s2cid = 53502177 | doi-access = free }}</ref>
! colspan=1 | 16S rRNA based [[The All-Species Living Tree Project|LTP]]_10_2024<ref>{{cite web|title=The LTP |url=https://imedea.uib-csic.es/mmg/ltp/#LTP| access-date=10 December 2024}}</ref><ref>{{cite web|title=LTP_all tree in newick format| url=https://imedea.uib-csic.es/mmg/ltp/wp-content/uploads/ltp/LTP_all_10_2024.ntree |access-date=10 December 2024}}</ref><ref>{{cite web|title=LTP_10_2024 Release Notes| url=https://imedea.uib-csic.es/mmg/ltp/wp-content/uploads/ltp/LTP_10_2024_release_notes.pdf |access-date=10 December 2024}}</ref>
! colspan=1 | 120 marker proteins based [[Genome Taxonomy Database|GTDB]] 09-RS220<ref name="about">{{cite web |title=GTDB release 09-RS220 |url=https://gtdb.ecogenomic.org/about#4%7C |website=[[Genome Taxonomy Database]]|access-date=10 May 2024}}</ref><ref name="tree">{{cite web |title=bac120_r220.sp_labels |url=https://data.gtdb.ecogenomic.org/releases/release220/220.0/auxillary_files/bac120_r220.sp_labels.tree |website=[[Genome Taxonomy Database]]|access-date=10 May 2024}}</ref><ref name="taxon_history">{{cite web |title=Taxon History |url=https://gtdb.ecogenomic.org/taxon_history/ |website=[[Genome Taxonomy Database]]|access-date=10 May 2024}}</ref>
|- 
| style="vertical-align:top|
{{Clade | style=font-size:90%;line-height:80%
|1={{clade
  |1=''[[Nitrospirota]]'' ([[Outgroup (cladistics)|outgroup]])
  |2={{clade
    |1={{clade
      |1="''Candidatus'' [[Aminicenantes]]"
      |2="''Candidatus'' [[Fischerbacteria]]"
       }}
    |2={{clade
    |label1=Acidobacteriota
    |1={{clade
      |1=Class 1-11
      |2={{clade
        |1=Class 4-3
        |2={{clade
          |1=[[Thermoanaerobaculia]]
          |2={{clade
            |1=Class 4-1
            |2={{clade
              |1=Class 1-10
              |2={{clade
                |1=[[Holophagae]]
                |2={{clade
                  |1=Class 1-6
                  |2={{clade
                    |1=[[Vicinamibacteria]]
                    |2={{clade
                      |1={{clade
                        |1=Class 6-2
                        |2=Class 1-4
                         }}
                      |2={{clade
                        |1={{clade
                          |1=Class 6-1
                          |2=Class 1-3
                           }}
                        |2={{clade
                          |1=Class 1-2
                          |2={{clade
                            |1="[[Acidobacteriia]]"
                            |2=[[Blastocatellia]]
                             }}
                             }}
                           }}
                         }}
                       }}
                     }}
                   }}
                 }}
               }}
             }}
           }}
         }}
       }}
     }}
   }}
}}
|
{{Clade | style=font-size:90%;line-height:80%
|label2='''Acidobacteriota'''
|1={{clade
  |1={{clade
    |1=[[Thermoanaerobaculia]]
    |2=[[Holophagae]]
     }}
  |2={{clade
    |1=[[Vicinamibacteria]]
    |2={{clade
      |1=[[Blastocatellia]]
      |2=[[Acidobacteria]]
       }}
     }}
   }}
}}
|
{{Clade | style=font-size:90%;line-height:80%
|label2='''Acidobacteriota'''
|1={{clade
  |1={{clade
    |1={{clade
      |1="[[Fischerbacteria]]"
      |2="[[Guanabacteria]]" <small>Tschoeke et al. 2020</small><ref>{{cite journal | vauthors = Tschoeke DA, Coutinho FH, Leomil L, Cavalcanti G, Silva BS, Garcia GD, Dos Anjos LC, Nascimento LB, Moreira LS, Otsuki K, Cordeiro RC, Rezende CE, Thompson FL, Thompson CC | title = New bacterial and archaeal lineages discovered in organic rich sediments of a large tropical Bay | journal = Mar Genomics | year = 2020 | volume = 54 | pages = 100789 | pmid = 32563694 | doi = 10.1016/j.margen.2020.100789| bibcode = 2020MarGn..5400789T | s2cid = 219971745 }}</ref>
       }}
    |2="[[Aminicenantia]]" <small>Chuvochina et al. 2023</small>
     }}
  |2={{clade
    |1={{clade
      |1=[[Thermoanaerobaculia]] <small>Dedysh and Yilmaz 2018</small>
      |2="[[Holophagae|Holophagia]]" <small>Oren, Parte & Garrity 2016</small>
       }}
    |2={{clade
      |1="[[Polarisedimenticolia]]" <small>Flieder et al. 2021</small>
      |2={{clade
        |1=[[Vicinamibacteria]] <small>Dedysh and Yilmaz 2018</small>
        |2={{clade
          |1=[[Blastocatellia]] <small>Thrash and Coates 2010</small>
          |2="[[Acidobacteriia]]" <small>Pascual et al. 2016</small>
           }}
         }}
       }}
     }}
   }}
}}
|}

==See also==
* [[List of bacterial orders]]
* [[List of bacteria genera]]

==References==
{{Reflist|30em}}

==External links==
* [https://archive.today/20140223073550/http://cmr.jcvi.org/tigr-scripts/CMR/GenomePage.cgi?org=ntab02 ''Acidobacteria bacterium Ellin345'' Genome Page]
* [http://www.genomesonline.org/search.cgi?colcol=all&goldstamp=ALL&gen_type=ALL&org_name1=genus&gensp=Acidobacterium&org_domain=ALL&org_status=ALL&size2=ALL&org_size=Kb&gen_gc=ALL&phylogeny2=ALL&gen_institution=ALL&gen_funding=ALL&gen_data=ALL&cont=ALL&gen_country=ALL&gen_pheno=ALL&gen_eco=ALL&gen_disease=ALL&gen_relevance=ALL&gen_avail=ALL&selection=submit+search Acidobacterium Genome Projects] (from [http://www.genomesonline.org Genomes OnLine Database])
* [https://www.sciencedaily.com/releases/2007/07/070726142026.htm Science Daily article]
* [http://www.sciam.com/article.cfm?articleID=098146BA-E7F2-99DF-352819E585277D72&chanID=sa003 Scientific American article]
* [https://github.com/sap218/acidoseq acidoseq, A Python package for studying Acidobacteria]

{{Extremophile}}
{{Bacteria classification}}
{{Life on Earth}}
{{Taxonbar|from=Q73346630|from2=Q41579}}

[[Category:Acidobacteriota| ]]
[[Category:Acidophiles]]