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THE COELOMYCETES

THE COELOMYCETES. PROF. SYED QAISER ABBAS Ex-Chairman Department of Botany GC University, Faisalabad. THE COELOMYCETES. Fungi imperfecti or (Deuteromycotina) having conidia and conidiogenous cells in cavity lined by: fungal tissues; host tissues fungal tissues host tissues both

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THE COELOMYCETES

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  1. THE COELOMYCETES PROF. SYED QAISER ABBASEx-Chairman Department of BotanyGC University, Faisalabad

  2. THE COELOMYCETES • Fungi imperfecti or (Deuteromycotina) • having conidia and conidiogenous cells in cavity lined by: • fungal tissues; • host tissues • fungal tissues • host tissues both • The most important group causing diseases in; • Plants; • Animals; and • human beings.

  3. THE COELOMYCETES • Fungi of Cosmopolitan Distribution • well known plant pathogens with wide host range • Macrophomina phaseolina, • Lasiodiplodia undulata (=L. theobronae) • Ascochyta pisi

  4. Taxonomy in Historical Perspective • Grove (1919) Initial Treatment; • Phyllosticta, Phomopsis and Phloeospora • Grove (1935, 1937) • All fungi forming conidia in a cavity lined by fungal or fungal and host or only host tissues. • Sutton (1962, 1963) • Application the concept of conidiogenesis for taxonomic treatment of Hyphomycetes of Hughes (1953) to Coelomycetes • Kendrick (1979a, 1979b) • Refined taxonomic treatment based on the concept of conidiogenesis

  5. Taxonomy in Historical Perspective • Alexopoulos & Mims (1979) • kingdom Myceteae • Gymnomycota • Mastigomycota • Amastigomycota: Achlorophyllous; absorptive nutrition; generally without flagella; cells have spindle fiber which functions during nuclear division instead of a centriole. • Amastigomycota • sub-Division Zygomycotina; • sub-Division Ascomycotina; • sub-Division Basidiomycotina; • sub-Division Deutromycotina.

  6. Taxonomy in Historical Perspective • Division Deuteromycotina (an artificial taxon) • One class Deuteromycetes • Subclass Hyphomycetidae • Subclass Aganomycetidae: • Subclass Coelomycetidae • order Sphaeropsidales (Having pycnidial condiomata) • order Melanconiales (having acervular condiomata) • Sutton (1977, 1980) • Coelomycetes • order Sphaeropsidales (Having pycnidial condiomata) • order Melanconiales (Having acervular condiomata) • order Pycnothyriales (Having pycnothyrium conidiomata)

  7. Class Deuteromycetes • -Form-subclass: Coelomycetidae (Coelomycetes) • Form-order: Sphaeropsidales (pycnidial) • Form-family: Sphaeropsidaceae • Form-family: Nectrioidaceae • Form-family: Leptostromataceae • Form-family: Discellaceae • Form-order: Pycnothyriales (Pycnothyrium) • Form-family Pycnothyriacea • From-order: Melanconiales (acervulus) • Form-family: Melanconiaceae

  8. Class Deuteromycetes • Form-subclass: Hyphomycetidae (Hyphomycetes) • Form-order: Moniliales • Form-family: Moniliaceae (Hyaline conidia and conidiophore) • Form-family: Dematiaceae (Coloured conidia and conidiophore) • Form-family: Tuberculariaceae (Sporodochium) • Form-family: Stilbellaceae (Synemma) • Form-order: Agonomycetales (Mycelia Sterilia)

  9. CONIDIOMATAL STRUCTURES(Six variants morphological types) • Phoma-type(Conidiomata Pycnidial, dark colored, leathery to carbonaceous, stromatic or non-stromatic pycnidia generally with a circular ostiole) • Zythia (Nectria)-type(Conidiomata Pycnidial as in Phoma-type, but light colored, and sometimes waxy) • Leptostroma-type(Conidiomata shield-shaped) • Discella-type(Conidiomata more or less cup shaped) • Pycnothyrial Type(Conidiomata pycnothyrium) • EustomataType (Conidiomata Eustomatic, Multilocular of complex structure of different shapes)

  10. Current fungal Classification • (Before 1969, ) Three kingdom system concepts • Prokaryotae • Animalia • Plantae • Five kingdom system by Whittaker (1969) • Monera • Protista • Fungi • Animalia • Plantae

  11. Current Status • Dick 1995:(Using Genetic engineering and by rDNA finger printing methods) • Monera • Protista • Fungi • Animalia • plantae • kingdom Straminipila

  12. • Current Status • Alexopoulos et al (1995) Protista • Phylum Plasmodiophoromycota, • Phylum Dictyostleiomycota • Phylum Acrasiomycota • Phylum Myxomycota • Monera • Animalia • plantae kingdom • Fungi • Phylum Chytridiomycota • Phylum zygomycota • Phylum Ascomycota • Phylum Basidiomycota

  13. Current Status • Alexopoulos et al (1995) Stramenopila. • Phylum Oomycota • Phylum Hyphochytridiomycota • Phylum Laburinthulomycota • Diatoms • Brown algae

  14. Recent Position of Deuteromycetes • Alexopoulos et al (1995) • Second class members among “Perfect” sexually reproducing organism (Ascomycota). • Not sub divided this artificial class into sub classes or in orders. • Hawksworth et al (1995) • All asexually reproducing fungi as Mitosporic fungi and also not divided into orders and families.

  15. Thanks for now the rest will be discussed in practical session

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