Article · Wikipedia archive · Last revised Aug 1, 2026

Phagomyxid

Phagomyxids are a group of obligate endoparasitic protists belonging to the subphylum Endomyxa in Cercozoa. Taxonomically, they are united under a single family Phagomyxidae, order Phagomyxida, sister to the plasmodiophores.

Last revised
Aug 1, 2026
Read time
≈ 1 min
Length
234 w
Citations
6
Source
Phagomyxids
Right column: Phagomyxida.
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Sar
Clade: Rhizaria
Phylum: Cercozoa
Subphylum: Endomyxa
Superclass: Proteomyxia
Class: Phytomyxea
Order: Phagomyxida
Cavalier-Smith, 1993
Family: Phagomyxidae
Cavalier-Smith, 1993
Genera

Phagomyxids are a group of obligate endoparasitic protists belonging to the subphylum Endomyxa in Cercozoa.1 Taxonomically, they are united under a single family Phagomyxidae, order Phagomyxida, sister to the plasmodiophores.2

Ecology

Phagomyxids are mainly parasites of brown algae,3 but some can parasite oomycetes.4

Taxonomy

The group was created in 1993 by Cavalier-Smith, when it contained only the genus Phagomyxa.2 Since then, Maullinia, a genus previously in Plasmodiophoridae, has joined the phagomyxids.4

  • Phagomyxa Karling, 1944
  • Maullinia I. Maier, E.R. Parodi, Westermeier & D.G. Müll., 2000
References

References

  1. Cavalier-Smith T (1 March 2002). "The phagotrophic origin of eukaryotes and phylogenetic classification of Protozoa". International Journal of Systematic and Evolutionary Microbiology. 52 (2): 297–354. doi:10.1099/00207713-52-2-297.
  2. Cavalier-Smith T (September 1993). "The Protozoan Phylum Opalozoa". Eukaryotic Microbiology. 40 (5): 609–615. doi:10.1111/j.1550-7408.1993.tb06117.x.
  3. Schwelm A, Badstöber J, Bulman S, Desoignies N, Etemadi M, Falloon RE, Gachon CMM, Legreve A, Lukeš J, Merz U, Nenarokova A, Strittmatter M, Sullivan BK, Neuhauser S (April 2018). "Not in your usual Top 10: protists that infect plants and algae". Mol Plant Pathol. 19 (4): 1029–1044. doi:10.1111/mpp.12580. PMC 5772912. PMID 29024322.
  4. Neuhauser S, Kirchmair M, Bulman S, et al. (23 February 2014). "Cross-kingdom host shifts of phytomyxid parasites". BMC Evol Biol. 14 (33). doi:10.1186/1471-2148-14-33. PMC 4016497. PMID 24559266.