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Plant Hormones and Responses

Plant Hormones and Responses. Environmental Factors. Etiolation (absence of light). Greening (presence of light). Signal Reception. More complicated. Hormones. Hormones. Early Experiments. Discovery of Auxin. Activity of Auxin. Gibberellins. Ethylene.

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Plant Hormones and Responses

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  1. Plant Hormones and Responses

  2. Environmental Factors Etiolation (absence of light) Greening (presence of light)

  3. Signal Reception

  4. More complicated ...

  5. Hormones

  6. Hormones

  7. Early Experiments

  8. Discovery of Auxin

  9. Activity of Auxin

  10. Gibberellins

  11. Ethylene Ceneraria leaves rolled in from the sides in response to exposure to ethylene

  12. Normal Ethylene Less Ethylene

  13. Normal Ethylene Less Ethylene

  14. Ethylene & Senescence

  15. Leaf Abscission Protective Layer (suberized) Petiole Separation Layer

  16. Ethylene – Triple Response

  17. Abscisic Acid & Stomata

  18. Plant Tropisms

  19. Phototropism

  20. Gravitropism (aka geotropism)

  21. Thigmotropism

  22. Nastic Movements

  23. Nastic Movements: Action Potentials?

  24. Photoperiodism

  25. Red Light Interuptions

  26. Joined Plants

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