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Filum Hyphochytridiomycota.pptx
- 1. FILUM HYPHOCHYTRIDIOMYCOTA Class hyphochytridiomycetes MATERI KULIAH KE 13 PENGANTAR MIKOLOGI TUMBUHAN
- 2. Classification Hyphochytridiomycetes Order Hyphochytriales • Family Anisolpidiaceae • Family Rhizidiomycetaceae • Rhizidiomyces, Reesia, Latrostium • Family Hyphochytriaceae • Hyphochytrium, Cystochytrium, Centeriomyces
- 3. Characteristics • Hyphochytridiomycetes are aquatic, freshwater or marine chytrid-like fungi • Motile cells are anteriorly uniflagellate, • Tinsel type flagellum • Parasitic on algae, saprobic on plant and insect debris in the waters in which they live. • The walls of all species contain chitin. • Cellulose is present in some
- 4. Continue… • The thallus wich may holocarpic or eurocarpic - in holocarpic species the thallus is endobiotic and is converted into zoosporangium - in eucarpic form the thallus may consist of a single reproductive organ bearing a branched rhizoidal system, or may be polycentric and consist of branched hyphae with some septa. holocarpic eucarpic
- 5. Continue.. • The zoosporangia are inoperculate and release their zoospores through discharge tubes. • The zoospora germinate and reproduce the thallus. • Sexual reproduction is known only in the genus Reesia, whose systematic position is still uncertain and whose morphology requires reinvestigation.
- 6. Rhizidiomyces • The thallus is monocentric, consisting of a single cell that bears a system branched rhizoids sunken into substratum. • Sexual reproduction has not been observed • Example Rhizidiomyces apophysatus
- 7. Life Cycle of Rhizidiomyce s apophysatus • Parasitic on the oogonis of water molds of family Saprolegniaceae or on the green alga Vaucheria. But, it also Isolated from soil and pine pollen. •Zoospore bears a tinsel flagellum