Transcript Lecture12, Classification of Eumycota

Classification of Eumycota
‫تصنيف الفطريات الحقيقية‬
Classification of Eumycota
True fungi are grouped into five subdivision based on their method of reproduction.
1. Mastigomycotina
2. Zygomycotina
3. Ascomycotina
4. Basidiomycotina
5. Deuteromycotina
(Imperfect fungi)
Non-septate
(coenocytic)
hyphae
septate
hyphae
Asexual
& sexual
spores
Asexual
spores
motile spores
Zoospores
Non-motile
spores
Sub-division: Mastigomycotina
Class: Oomycetes
1.
Hyphae are coenocytic (non-septate)
2.
Sexual gametangia are dissimilar
• Female gametangia (oogonia)
• Male gametangia (antheridia)
Zygomycotina
‫الفطريات التزاوجية او االقترانية‬
1. Hyphae are coenocytic (non-septate).
2. The hyphae are filled or lined with continuous
multinucleated protoplasm.
3. This includes both parasitic and saprophytic species.
Zygomycotina
‫الفطريات التزاوجية او االقترانية‬
3. Sexual gametangia are similar
4. Sexual reproduction is by conjugation (fusing) hyphae from
two different strains, followed by plasmogamy, karyogamy,
meiosis and then the production of Zygospores.
5. For example: Rhizopus
Rhizopus (Black bread mold ) ‫عفن ال ُخبز األسود‬
 It is a saprophytic fungus, which can grow on moist bread,
stored fruits, vegetables, and synthetic nutritive media.
 Sexual reproduction by the production of zygospores.
 Asexual reproduction by the production of sporangispores
Vegetative structure
• The mycelium consists of branched non-septate
hyphae, which grow creeping upon the substratum
called stolon
• Rhizoids for absorption of the necessary food
material.
• Sporangiophores with a single sporangium.