Plants+HC+SAR megagroup

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Plants+HC+SAR megagroup
Diaphoretickes collage.jpg
Scientific classification e
Domain: Eukaryota
(unranked): Diaphoretickes
unranked groups
  • Corticata

The Archaeplastida+HC+SAR megagroup (Archaeplastida comprising the red algae, the green algae, and the land plants) is a group of eukaryotes proposed by Burki et al. (2008).[1]

It includes:

This description includes all Bikonts that are not excavates and Hemimastigophora. It is also referred to as Diaphoretickes (/ˌdəfəˈrɛtɪkz/) or the SAR/HA Supergroup, or the Corticata with Rhizaria now included in the SAR supergroup.[2] The name Corticata comes from Cavalier-Smith's hypothesis about the common origin of the cortical alveoli of glaucophytes and alveolates.[3]

It was previously described as the sum of Archaeplastida, Rhizaria, and chromalveolates.[4] However, this description is obsolete, largely due to the discovery that chromalveolata was not monophyletic.

It includes most of the species engaging in photosynthesis, except for the Euglenozoa and Cyanobacteria.


  1. ^ Burki, F.; Shalchian-Tabrizi, K.; Pawlowski, J. (2008). "Phylogenomics reveals a new 'megagroup' including most photosynthetic eukaryotes". Biology Letters. 4 (4): 366–369. doi:10.1098/rsbl.2008.0224. PMC 2610160. PMID 18522922.
  2. ^ Cavalier-Smith, Thomas; Chao, Ema E.; Snell, Elizabeth A.; Berney, Cédric; Fiore-Donno, Anna Maria; Lewis, Rhodri (2014). "Multigene eukaryote phylogeny reveals the likely protozoan ancestors of opisthokonts (animals, fungi, choanozoans) and Amoebozoa". Molecular Phylogenetics and Evolution. 81: 71–85. doi:10.1016/j.ympev.2014.08.012. ISSN 1055-7903. PMID 25152275.
  3. ^ Cavalier-Smith, Thomas (January 2003). "Protist phylogeny and the high-level classification of Protozoa". European Journal of Protistology. 39 (4): 338–348. doi:10.1078/0932-4739-00002.
  4. ^ Hampl, V.; Hug, L.; Leigh, J.; Dacks, J.; Lang, B.; Simpson, A.; Roger, A. (2009). "Phylogenomic analyses support the monophyly of Excavata and resolve relationships among eukaryotic "supergroups"". Proceedings of the National Academy of Sciences of the United States of America. 106 (10): 3859–3864. Bibcode:2009PNAS..106.3859H. doi:10.1073/pnas.0807880106. PMC 2656170. PMID 19237557.