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Chytridiomycetes.pptx
- 2. • Production of motile cells (Zoospores or planogamets) • Have single posterior Whiplash flagellum • Flagellum attached on the blepharoplast • Aquatic fungi • Saprophytes or parasites on aquatic organism • Some in habitat on soil (Saprophytic or parasitic on economically important plants) eg. Synchytrium endobioticum, that causes wart disease in potatoes https://archive.bio.ed.ac.uk/jdeacon/microbes/chytrid.htm
- 3. • Most of them are unicellular • Vegetative body consists of single cell • Holocarpic (At maturity the entire cell converted into reproductive structure) Eg. Olpidium, Micromyces, Rozella • Some Eucarpic (some portion of the thallus converted into reproductive structures) • Branched Rhizoid system Eg. Rhizophidium • More extensive Hypha like rhizoidal system called rhizomycelium Asexual reproduction takesplace by zoospore produced by sporangia https://archive.bio.ed.ac.uk/jdeacon/microbes/chytrid.htm
- 4. • Zoospores released from the sporangium through porea on the wall through discharge tube (inoperculate sps) • Sexual reproduction is only few sps • Isogamous or anisogamous • In some sps sexual reproduction is Oogamous- Eg. Monoblepharides https://www.semanticscholar.org/paper/First- records-of-Monoblepharella-taylori-Sparrow-in-Jrs- Ndc/603f18fb151ef5f9cb58fbab1a993e801a67ea8 9
- 5. Chytridiomycetes Chytridates Blastocladiales Monoblepharidales On the basis of vegetative and reproductive structures this subclass have three orders
- 6. Chytridiales • Small order • Two genera • Hapochytrium • Oedogoniomyces https://umaine.edu/chytrids/monoblepharidales__trashed/oedogoniomyces/
- 7. Blastocladiales • Vegetative body is a typical mycelium • Sexual reproduction is or aniso- planogamous. • The sporangia are thick-walled and resistant. • The zoospores has no refractive oil globule but has a nuclear cap. It swims evenly. • Family Hypochytriaceae belongs to this order https://www.davidmoore.org.uk/21st_century_guidebook_to_f ungi_platinum/Ch03_04.htm
- 8. Monoblepharidales • Typical mycelium • Sexual reproduction is heterogamous • Motile male and non-motile female gamets • Resistant sporangia is lacking https://en.wikipedia.org/wiki/Monoblepharidomycetes