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. PLANT DISEASE TRIANGLE ENVIRONMENT PATHOGEN HOST

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

4. SYCAMORE ANTHRACNOSE NECROTROPHIC PATHOGENS

5. POWDERY MILDEW HYPHAE ASCOCARPS BIOTROPHIC PATHOGENS

6. Growth of Fungi in Plants HYPHAE

7. PATHOGENESIS TOXINSENZYMES GROWTH REGULATORS

8. RHYTISMA PUNCTATUM ACER MACROPHYLLUM

10. Cedar root rot Phytophthora lateralis

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

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

14. CROP ROTATION FUMIGATION

15. PRECISION SOWING

21. PLANT DISEASE TRIANGLE ENVIRONMENT PATHOGEN HOST

22. DAMPING OFF– PYTHIUM – a Watermold HOSTENVIRONMENT PATHOGEN

23. SPORANGIA Release Zoospores

24. SEXUAL OOSPORES

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

27. HOSTENVIRONMENT PATHOGEN

28. TOP BLIGHT– PHOMA, FUSARIUM

31. HOSTENVIRONMENT PATHOGEN

32. WINTER INJURY--ABIOTIC

33. “STORAGE BLIGHT” -- ABIOTIC

34. PHYTOPHTHORA ROOT ROT IN DOUGLAS-FIR

35. SPORANGIA HOSTENVIRONMENT PATHOGEN

36. OOSPORE

39. DAMPING OFF– PYTHIUM HOSTENVIRONMENT PATHOGEN

40. SPORANGIA

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