Plasmodiophoromycota: Endoparasitic Fungi Causing Plant Diseases
Explore the world of Plasmodiophoromycota, endoparasitic fungi causing plant diseases such as club root disease in cabbage and powdery scab in potato. Learn about their life cycle and common species, including Plasmodiophora brassicae and Spongospora. Discover the main characteristics of these fungi and how they impact plant hosts.
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Presentation Transcript
Basrah University Basrah University Faculty Education of Faculty Education of Qurna Biology Dept. Biology Dept. MYCOLOGY MYCOLOGY Lec Lec. . No. No.4 4 Phylum Phylum: : Plasmodiophoromycota Plasmodiophoromycota Qurna Dr. Dr. Ismail Ismail jumha Abbas jumha Abbas PH. PH.D D in Microbiology in Microbiology & & molecular biology molecular biology
Phylum: Phylum: Plasmodiophoromycota Plasmodiophoromycota Class: Class: Plasmodiophoromycetes Plasmodiophoromycetes Main Characters: Main Characters: 1 1. . Endoparasitic Endoparasitic fungi (obligates) 2 2. Causing several plant diseases . Causing several plant diseases 3 3. . Bifiagellated Bifiagellated zoospores present zoospores present 4 4. plasmodium formed inside the . plasmodium formed inside the host tissues host tissues 5 5. Common in water and moist soils . Common in water and moist soils fungi (obligates)
Most common species are Most common species are Plasmodiophora causes causes club root disease of cabbage club root disease of cabbage and subterrana subterrana causes causes powdery scab of powdery scab of potato The The life cycle of the fungus life cycle of the fungus Plasmodiophora can be summarized as, after the spore germination, can be summarized as, after the spore germination, biflagellate zoospores are released. Zoospores infecting biflagellate zoospores are released. Zoospores infecting the roots of plant host, hyphae are formed inside the the roots of plant host, hyphae are formed inside the root tissues. The disease symptom appears as club root tissues. The disease symptom appears as club- - shape shape, so , so it is called club it is called club- -root disease Resting spores root disease Resting spores are produced within the root tissues, spores are are produced within the root tissues, spores are released and a new infection of host plant ( released and a new infection of host plant (eg Cabbage Cabbage) is ) is occurred occurred Plasmodiophora brassicae and Spongospora potato. . Plasmodiophora brassicae brassicae Spongospora brassicae eg. .
