Berkelbacteria

{{Short description|Berkelbacteria (formerly ACD58) is a bacterial phylum.}}

{{Taxobox

|domain = Bacteria

|unranked_phylum = CPR group

|phylum = "Berkelbacteria"

|phylum_authority = Wrighton et al. 2014

}}

Berkelbacteria (formerly ACD58) is a bacterial phylum with candidate status, meaning there are no cultured representatives for this group. It is part of the Candidate Phyla Radiation.

Berkelbacteria was first reported in 2012, at which time it was classified as a divergent lineage of Parcubacteria (OD1) and referred to as ACD58.{{Cite journal|last1=Wrighton|first1=Kelly C.|last2=Thomas|first2=Brian C.|last3=Sharon|first3=Itai|last4=Miller|first4=Christopher S.|last5=Castelle|first5=Cindy J.|last6=VerBerkmoes|first6=Nathan C.|last7=Wilkins|first7=Michael J.|last8=Hettich|first8=Robert L.|last9=Lipton|first9=Mary S.|last10=Williams|first10=Kenneth H.|last11=Long|first11=Philip E.|date=2012-09-28|title=Fermentation, Hydrogen, and Sulfur Metabolism in Multiple Uncultivated Bacterial Phyla|url=https://www.science.org/doi/10.1126/science.1224041|journal=Science|language=en|volume=337|issue=6102|pages=1661–1665|doi=10.1126/science.1224041|issn=0036-8075|pmid=23019650|bibcode=2012Sci...337.1661W|s2cid=10362580}} It was proposed as a phylum in 2014.{{Cite journal|last1=Wrighton|first1=Kelly C.|last2=Castelle|first2=Cindy J.|last3=Wilkins|first3=Michael J.|last4=Hug|first4=Laura A.|last5=Sharon|first5=Itai|last6=Thomas|first6=Brian C.|last7=Handley|first7=Kim M.|last8=Mullin|first8=Sean W.|last9=Nicora|first9=Carrie D.|last10=Singh|first10=Andrea|last11=Lipton|first11=Mary S.|date=July 2014|title=Metabolic interdependencies between phylogenetically novel fermenters and respiratory organisms in an unconfined aquifer|journal=The ISME Journal|language=en|volume=8|issue=7|pages=1452–1463|doi=10.1038/ismej.2013.249|pmid=24621521|pmc=4069391|issn=1751-7370}} Representatives of this phylum have been detected in a variety of environments, including a deep thermokarst lake in the Sasapimakwananisikw River Valley (QC, Canada),{{Cite journal|last1=Vigneron|first1=Adrien|last2=Cruaud|first2=Perrine|last3=Langlois|first3=Valérie|last4=Lovejoy|first4=Connie|last5=Culley|first5=Alexander I.|last6=Vincent|first6=Warwick F.|date=2020|title=Ultra-small and abundant: Candidate phyla radiation bacteria are potential catalysts of carbon transformation in a thermokarst lake ecosystem|journal=Limnology and Oceanography Letters|language=en|volume=5|issue=2|pages=212–220|doi=10.1002/lol2.10132|issn=2378-2242|doi-access=free}} an acetate-amended alluvial aquifer adjacent to the Colorado River (CO, USA), and marine sediments from the Peru Margin seafloor.{{Cite journal|last1=Orsi|first1=William D.|last2=Richards|first2=Thomas A.|last3=Francis|first3=Warren R.|date=January 2018|title=Predicted microbial secretomes and their target substrates in marine sediment|url=https://www.nature.com/articles/s41564-017-0047-9|journal=Nature Microbiology|language=en|volume=3|issue=1|pages=32–37|doi=10.1038/s41564-017-0047-9|pmid=29062087|s2cid=3355333|issn=2058-5276}}