BIO2202 Plant Physiology 1 Stress Physiology - Lecture 1 - PowerPoint PPT Presentation

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BIO2202 Plant Physiology 1 Stress Physiology - Lecture 1 PowerPoint Presentation
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BIO2202 Plant Physiology 1 Stress Physiology - Lecture 1

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BIO2202 Plant Physiology 1 Stress Physiology - Lecture 1
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BIO2202 Plant Physiology 1 Stress Physiology - Lecture 1

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    1. BIO2202 Plant Physiology 1 Stress Physiology - Lecture 1 An Introduction to Stress

    2. Lecture Outline Definitions Adaptation and Acclimation Types of Stress - Water stress

    3. Definitions Stress - An external factor which exerts a disadvantageous effect on the organism. OR - Any change in environmental conditions which adversely alters plant growth or development Strain - The reduction in plant growth or function resulting from a stress.

    4. More Definitions. Adaptation to Stress - Genetically determined resistance acquired over generations by selection. - Heritable modifications in structure or function which increase the fitness of the plant in a stressful environment.

    5. More Definitions. Acclimation to Stress - An increase in the stress tolerance of an individual plant as a result of exposure to prior stress - Non-heritable physiological modifications made during the life of the individual plant NOTE: The capacity to acclimate is genetically determined

    6. Types of Stress