Hosta

Tetramyxa is a cercozoan protist, member of the plasmodiophores, parasite of several flowering plants.^[2] It was first described by Karl von Goebel in 1884, in his work Flora.^[1] The genus is characterized by the appearance of resting spores (or cysts) in groups of four.^[3]

Taxonomy

There are two accepted species:^[2]^[4]

Tetramyxa parasitica K. Goebel, 1884 (=Thecaphora ruppiae W. A. Setchell, 1924) – parasite of Zannichellia, Potamogeton and Ruppia roots.
Tetramyxa marina Y. Lipkin & A. Avidor, 1974 – parasite of Halophila stipulacea petioles.

The following additional species, though recognized as Tetramyxa, are listed as doubtful in some sources:^[2]

Tetramyxa rhizophaga D. Lihnell, 1942 – parasite of Juniperus communis roots.
Tetramyxa triglochinis M. Molliard, 1909 (=Molliardia triglochinis (M. Molliard) R. Maire & A. Tison, 1911) – parasite of Triglochin maritimum stems, ovaries and stamens.
Tetramyxa elaeagni Y. Yendo & K. Takase, 1932 – parasite of Elaeagnus multiflora roots.

^ ^a ^b ^c Flora oder Allgemeine Botanische Zeitung [Flora or General Botanical Newspaper] (PDF) (in German). Vol. 67. Regensburgische Botanische Gesellschaft von 1790 e.V. 1884. p. 517. Archived (PDF) from the original on 2022-10-21. Retrieved 2022-10-21.
^ ^a ^b ^c Dick, Michael W. (2001). Straminipilous Fungi: Systematics of the Peronosporomycetes Including Accounts of the Marine Straminipilous Protists, the Plasmodiophorids and Similar Organisms (1 ed.). Springer Dordrecht. doi:10.1007/978-94-015-9733-3. ISBN 978-94-015-9733-3. S2CID 28755980.
^ Braselton JP (1 March 1990). "Ultrastructure and karyology of Tetramyxa parasitica (Plasmodiophoromycetes)". Canadian Journal of Botany. 68 (3): 594–598. doi:10.1139/b90-078.
^ K.I. Goebel (1884). "Tetramyxa". WoRMS. World Register of Marine Species.