Microcystaceae

Microcystaceae
Microcystis aeruginosa
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Cyanobacteriota
Class:	Cyanophyceae
Order:	Chroococcales
Family:	Microcystaceae Elenkin
Genera [1] [2] [3]
See #Genera

Microcystaceae is family of cyanobacteria which contains the harmful algal bloom Microcystis aeruginosa . ^[4]

Characteristics

The family is characterized by single, floating cells or colonies which are embedded to a matrix. There is also a lack of differentiation between apical and basal structures. ^[5]

Genera

The following genera are accepted within Microcystaceae: ^[3]

• Altericista Averina et al. 2021
• Anacystis Meneghini 1837
• Aphanocapsa Nägeli 1849
• Aphanothece Nägeli 1849
• Aplococcus Roze 1896
• Asterocapsa Chu 1952
• Bichatia Turpin 1828 nom.rej. without replacement
• Cagniardia Trevisan 1848
• Chalicogloea Roldán et al. 2013
• Coccopedia Troitzkaja 1922
• Coelomoron Buell 1938
• Coelosphaeriopsis Lemmermann 1899
• Coelosphaerium Nägeli 1849
• Crocosphaera Zehr et al. 2019
• Cyanoaggregatum Werner et al. 2008
• Cyanocatena Hindák 1975
• Cyanocomperia Hindák 2002
• Cyanodorina Chen et al. 2023
• Cyanogranis Hindák 1982
• Cyanonephron Hickel 1985
• Cyanostylon Geitler 1928
• Cyanotetras Hindák 1988
• Dzensia Woronichin 1929
• Eucapsis Clements and Shantz 1909
• Eucapsopsis de Oliveira et al. 2024
• Globuloella Korde 1958
• Gloeothece Nägeli 1849
• Gonidium Ehrenberg ex Meneghini 1840
• Hormothece Jao 1944
• Mantellum Dangeard 1941
• Merismoarcus Hindák 1988
• Merismopedia Meyen 1839
• Microcystis Kützing 1833
• "Microhaloa" Kützing 1843 nom.nud.
• Palaeomicrocystis Korde 1955
• Pannus Hickel 1991
• Pilgeria Schmidle 1901
• Planktocyanocapsa Hindák 2002
• Prochloron Lewin ex Hoffmann and Greuter 1993
• Pseudoholopedia (Ryppowa 1925) Elenkin 1938
• Pseudoncobyrsa Geitler 1925
• Radiocystis Skuja 1948
• Rhyniococcus Edwards and Lyon 1983
• Rippkaea Johansen and Mareš 2019
• Rubidibacter Choi et al. 2008
• Siphonosphaera Hindák 1988
• Snowella Elenkin 1938
• Sorospora Hassall 1845
• Spelaeotes corrig. Panou and Gkelis 2022
• Sphaerocavum Azevedo and Sant'Anna 2003
• Sphinctosiphon West 1907
• Synechocystis Sauvageau 1892
• Thaumaleocystis Trevisan 1848
• Uranovia Korde 1958
• Woronichinia Elenkin 1933
• Zehria Johansen and Mareš 2019

Phylogeny

GTDB (partial)

Phylogeny per GTDB Release 10-RS226 (April 2025). ^[6]

	Crocosphaera 100 Atelocyanobacterium 100 100 JBCDDV01 sp039180145 80 UHCC-0190 100 Aphanothece_B sacrum 99 Rippkaea 100 100 JBGTNM01 sp041743025 86 JBGTGT01 sp041746575 91 Hydrococcus 100 28 Microcystis Pannus brasiliensis 100 Chroococcopsis gigantea 100 JBBAUO01 sp040398185 45 Chroococcus 100 100 Gloeothece 100 64

References

1. Komárek J, Kaštovský J, Mareš J, Johansen JR (2014). "Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach" (PDF). Preslia. 86: 295–335.
2. Jan Mareš; Jeffrey R. Johansen; Tomáš Hauer; Jan Zima Jr.; Stefano Ventura; Oana Cuzman; Bruno Tiribilli; Jan Kaštovský (June 2019). "Taxonomic resolution of the genus Cyanothece (Chroococcales, Cyanobacteria), with a treatment on Gloeothece and three new genera, Crocosphaera, Rippkaea, and Zehria". Journal of Phycology. 55 (3): 578–610. doi:10.1111/jpy.12853.
3. "Family Microcystaceae". LPSN.dsmz.de.
4. "Chroococcales". EOL. Retrieved 24 June 2011.
5. "Chroococcales". Digital Specimen Archives. Protist Information Server. Retrieved 24 June 2011.
6. "bac120_r226.sp_labels.tree".