Bacillariophyceae

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Bacillariophyceae
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Domain: Eukaryota
Clade: Diaphoretickes
Clade: Sar
Clade: Stramenopiles
Phylum: Ochrophyta
Clade: Diatomeae
Subphylum: Bacillariophytina
Class: Bacillariophyceae
Haeckel 1878, emend. Adl et al. 2019 [1]

Bacillariophyceae is a class of diatoms. [1] Previously, this class was equivalent to Diatomeae, the taxonomic name for all diatoms. [2] However, due to both the known and estimated diversity of diatoms, since 2019 they have been expanded to several classes. In particular, Bacillariophyceae was given the following modified diagnosis: [1]

"Chain-forming, colonial or solitary; valve outline almost always bipolar; valve pattern organized bilaterally about an elongate axial rib (sternum), as in a feather; valve structure simple or chambered; rimoportulae generally only one or two per valve or none, sometimes accompanied (or replaced?) by special slits (the ‘raphe’) involved in motility; sexual reproduction involving gametangiogamy and almost always with gametes of equal size (although sometimes with behavioural differentiation and/or morphological differences); perizonium generally differentiated into two distinct series, transverse and longitudinal; chloroplasts usually only one, two or a few and large, less often many and small."

References

  1. 1 2 3 Adl, Sina M.; Bass, David; Lane, Christopher E.; Lukeš, Julius; Schoch, Conrad L.; Smirnov, Alexey; Agatha, Sabine; Berney, Cedric; Brown, Matthew W.; Burki, Fabien; Cárdenas, Paco; Čepička, Ivan; Chistyakova, Lyudmila; Del Campo, Javier; Dunthorn, Micah; Edvardsen, Bente; Eglit, Yana; Guillou, Laure; Hampl, Vladimír; Heiss, Aaron A.; Hoppenrath, Mona; James, Timothy Y.; Karnkowska, Anna; Karpov, Sergey; Kim, Eunsoo; Kolisko, Martin; Kudryavtsev, Alexander; Lahr, Daniel J.G.; Lara, Enrique; Le Gall, Line (26 September 2018). "Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes". The Journal of Eukaryotic Microbiology. 66 (1): 4–119. doi:10.1111/JEU.12691. PMC   6492006 . PMID   30257078.
  2. Cavalier-Smith, Thomas (5 September 2017). "Kingdom Chromista and its eight phyla: a new synthesis emphasising periplastid protein targeting, cytoskeletal and periplastid evolution, and ancient divergences". Protoplasma. 255 (1): 297–357. doi: 10.1007/s00709-017-1147-3 . PMC   5756292 . PMID   28875267.