Pleurocapsales

{{Short description|Order of bacteria}} {{Automatic taxobox | image = | image_caption = Pleurocapsa sp | taxon = Pleurocapsales | authority = Geitler | subdivision_ranks = Families | subdivision_ref = <ref name="Komárek">{{cite journal |vauthors=Komárek J, Kaštovský J, Mareš J, Johansen JR | year = 2014 | title = Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach | url = http://www.preslia.cz/P144Komarek.pdf | journal = Preslia | volume = 86 | pages = 295–335 }}</ref> | subdivision = * [[Dermocarpellaceae]] Ginsburg-Ardré ex Christensen * [[Hydrococcaceae]] Kützing * [[Hyellaceae]] Borzi * [[Xenococcaceae]] Ercegović }}

The '''Pleurocapsales''' are an order of coccooid [[cyanobacteria]]. Pleurocapsales are characterized by having boocytes, specialized cells where multiple fission takes place.<ref>{{Cite journal|last1=Waterbury|first1=J B|last2=Stanier|first2=R Y|date=1978|title=Patterns of growth and development in pleurocapsalean cyanobacteria.|journal=Microbiological Reviews|volume=42|issue=1|pages=2–44|doi=10.1128/mmbr.42.1.2-44.1978|pmid=111023|pmc=281417|issn=0146-0749|doi-access=free}}</ref>

Their ecology is mainly endolytic and calcareous, they are found inside rocks and in low light conditions.<ref>{{Cite journal|last1=Stivaletta|first1=N.|last2=Barbieri|first2=R.|date=January 2009|title=Endolithic microorganisms from spring mound evaporite deposits (southern Tunisia)|url=http://dx.doi.org/10.1016/j.jaridenv.2008.09.024|journal=Journal of Arid Environments|volume=73|issue=1|pages=33–39|doi=10.1016/j.jaridenv.2008.09.024|issn=0140-1963|url-access=subscription}}</ref> Pleurocapsales were thought to be related to ''Chroococcidiopsis'' but recent work with phylogenetics of the 16S rDNA gene has shown that ''Chroococcidiopsis'' belongs to its own order Chroococcidiopsidales.<ref>{{Cite journal|last1=Fewer|first1=David|last2=Friedl|first2=Thomas|last3=Büdel|first3=Burkhard|date=April 2002|title=Chroococcidiopsis and Heterocyst-Differentiating Cyanobacteria Are Each Other's Closest Living Relatives|url=http://dx.doi.org/10.1006/mpev.2001.1075|journal=Molecular Phylogenetics and Evolution|volume=23|issue=1|pages=82–90|doi=10.1006/mpev.2001.1075|pmid=12182405|issn=1055-7903|url-access=subscription}}</ref>

Some genera within Pleurocapsales form pseudo-ramifications such as ''Pleurocapsa'' sp., ''Odorella'' sp, and all the genera within the Hyellaceae family.<ref>{{Cite journal|last1=Shalygin|first1=Sergei|last2=Huang|first2=I‐Shuo|last3=Allen|first3=Elle H.|last4=Burkholder|first4=JoAnn M.|last5=Zimba|first5=Paul V.|date=2019-02-13|title=Odorella benthonicagen. & sp. nov. (Pleurocapsales, Cyanobacteria): an odor and prolific toxin producer isolated from a California aqueduct|url=http://dx.doi.org/10.1111/jpy.12834|journal=Journal of Phycology|volume=55|issue=3|pages=509–520|doi=10.1111/jpy.12834|pmid=30637743|s2cid=58616115 |issn=0022-3646|url-access=subscription}}</ref>

Historically, the order Pleurocapsales has been one of the least studied orders of cyanobacteria, due to its endolithic ecology making them difficult to observe.<ref>{{Cite journal|last1=Shalygin|first1=Sergei|last2=Kavulic|first2=Katherine J.|last3=Pietrasiak|first3=Nicole|last4=Bohunická|first4=Markéta|last5=Vaccarino|first5=Melissa A.|last6=Chesarino|first6=Nicholas M.|last7=Johansen|first7=Jeffrey R.|date=2019-02-19|title=Neotypification of Pleurocapsa fuliginosa and epitypification of P. minor (Pleurocapsales): resolving a polyphyletic cyanobacterial genus|url=https://biotaxa.org/Phytotaxa/article/view/phytotaxa.392.4.1|journal=Phytotaxa|volume=392|issue=4|pages=245|doi=10.11646/phytotaxa.392.4.1|s2cid=92676499 |issn=1179-3163|url-access=subscription}}</ref>

Most recently, the order Pleurocapsales has been subsumed within the order [[Chroococcales]].<ref>https://lpsn.dsmz.de/order/pleurocapsales</ref>

==References== {{Reflist}}

[[Category:Pleurocapsales| ]] [[Category:Bacteria orders]]