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Pathogenesis and Seedling Diseases

Pathogenesis and Seedling Diseases. LEARNING OBJECTIVES:. The Disease Triangle Heterotrophy and Pathogenesis Saprotrophs, Necrotrophs, and Biotrophs Growth and Reproduction of Fungi in Plants Seedling Diseases Damping-off Fusarium root rot Top Blight Phytophthora root rot. PATHOGEN.

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Pathogenesis and Seedling Diseases

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  1. Pathogenesis and Seedling Diseases LEARNING OBJECTIVES: The Disease Triangle Heterotrophy and Pathogenesis Saprotrophs, Necrotrophs, and Biotrophs Growth and Reproduction of Fungi in Plants Seedling Diseases Damping-off Fusarium root rot Top Blight Phytophthora root rot

  2. PATHOGEN ENVIRONMENT HOST PLANT DISEASE TRIANGLE

  3. FOMITOPSIS PINICOLA RED BELT CONK SAPROTROPHIC FUNGI “BROWN CRUMBLY ROT”

  4. NECROTROPHIC PATHOGENS SYCAMORE ANTHRACNOSE

  5. BIOTROPHIC PATHOGENS POWDERY MILDEW HYPHAE ASCOCARPS

  6. Growth of Fungi in Plants HYPHAE

  7. PATHOGENESIS TOXINS ENZYMES GROWTH REGULATORS

  8. RHYTISMA PUNCTATUM ACER MACROPHYLLUM

  9. Cedar root rot Phytophthora lateralis

  10. Oomycetes- Zoospores Ascomycetes - Conidiospores Asexual Reproduction of Fungi

  11. Ascospores SWISS NEEDLE CAST PHAEOCRYPTOPUS GAEUMANNII Sexual Reproduction of Fungi

  12. FUMIGATION CROP ROTATION

  13. PRECISION SOWING

  14. PATHOGEN ENVIRONMENT HOST PLANT DISEASE TRIANGLE

  15. PATHOGEN ENVIRONMENT HOST DAMPING OFF– PYTHIUM – a Watermold

  16. SPORANGIA Release Zoospores

  17. SEXUAL OOSPORES

  18. FUSARIUM ROOT ROT or 4TH OF JULY DISEASE– FUSARIUM OXYSPORUM

  19. PATHOGEN ENVIRONMENT HOST

  20. TOP BLIGHT– PHOMA, FUSARIUM

  21. PATHOGEN ENVIRONMENT HOST

  22. WINTER INJURY--ABIOTIC

  23. “STORAGE BLIGHT” -- ABIOTIC

  24. PHYTOPHTHORA ROOT ROT IN DOUGLAS-FIR

  25. PATHOGEN ENVIRONMENT HOST SPORANGIA

  26. OOSPORE

  27. PATHOGEN ENVIRONMENT HOST DAMPING OFF– PYTHIUM

  28. SPORANGIA

  29. FUSARIUM ROOT ROT or 4TH OF JULY DISEASE– FUSARIUM OXYSPORUM

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