Hyphochytriomycetes

From Infogalactic: the planetary knowledge core
Jump to: navigation, search
Hyphochytrids
Scientific classification
Domain:
(unranked):
(unranked):
Phylum:
Hyphochytriomycota

Whittaker, 1969[1]
Class:
Hyphochytriomycetes

Dick, 1983[2]
Subclass:
Hyphochytriomycetidae

Dick, 2001[3]
Order:
Hyphochytriales

Bessey, 1950[4]
Synonyms
  • Phylum Hyphochytridiomycota, orth. var.
    • Class Hyphochytridiomycetes Sparrow, 1958, Alexopoulos, 1962, orth. var.
    • Class Hyphochytrea Cavalier-Smith, 1986[5]
      • Order Hyphochytridae Cavalier-Smith, 1989[6]

Lua error in Module:Taxonbar/candidate at line 22: attempt to index field 'wikibase' (a nil value).

Hyphochytrids are eukaryotic organisms in the group of Stramenopiles (Heterokonta), formerly classified as fungi or as protists.

Characteristics

They are distinguished by an anterior tinsel flagellum[7] on their zoospores. Also they have a rhizoidal or hypha-like vegetative system (hence the prefix "Hypho-").

Classification

This group may be put alternatively at the phylum, class, subclass or order level, being referred to as Hyphochytriomycota, Hyphochytriomycetes (or Hyphochytrea), Hyphochytriomycetidae (or Hyphochytridae) and Hyphochytriales, respectively. The variants Hyphochytridiomycota and Hyphochytridiomycetes are also sometimes used, presumably by analogy to the Chytridiomycetes, or due to the perpetuation of a typographical error. However, the stem is Hyphochytri- (from Hyphochytrium) and not Hyphochytridi- (from Chytridium).[8]

In the past the classes Hyphochytridiomycetes, Oomycetes and Chytridiomycetes were grouped together in the now obsolete taxon Mastigomycotina as fungi with flagellate spores or gametes. Now the Chytridiomycetes are still considered true fungi, but the other two sub-groups are classified in the kingdom Protista, or in the group Stramenopiles.

Hyphochytriomycetes are closely related to Oomycetes.[9]

Diversity

This is a relatively small group, composed of about 16 known species, which may be due in part, to sampling methods of scientists.

References

  1. Lua error in package.lua at line 80: module 'strict' not found.
  2. Dick, M.W. 1983. Validation of the class name Hyphochytriomycetes. In: Buczacki (ed.), Zoosporic Plant Pathogens, A Modern Perspective. London & New York: Academic Press.
  3. M.W. Dick, Straminipilous Fungi: 330, 2001.
  4. Bessey, E. A. 1950. Morphology and taxonomy of fungi, [1].
  5. Cavalier-Smith, Prog. Phycol. Res. 4: 324, 1986.
  6. Cavalier-Smith, In: Green, Leadbeater, and Diver (eds.), The Chromophyte Algae: 385 (1989).
  7. Lua error in package.lua at line 80: module 'strict' not found.
  8. David, J. C. (2002). A preliminary catalogue of the names of fungi above the rank of order. Constancea 83: 1–30, [2].
  9. Lua error in package.lua at line 80: module 'strict' not found.

Bibliography

  • C.J. Alexopolous, Charles W. Mims, M. Blackwell et al., Introductory Mycology, 4th ed. John Wiley and Sons, Hoboken NJ, 2004. ISBN 0-471-52229-5.
  • Lua error in package.lua at line 80: module 'strict' not found.

External links

See also


<templatestyles src="Asbox/styles.css"></templatestyles>