stress physiology of plants

1. Stress Physiology
BY
MD ABU SAYED(AGRS2019000711)
MD MUNTASEER AL MAMUN (AGRS2019000712)

2. Contents
• Introduction
• Strategy to face the Stress Conditions
• Plant Response to Stress
• Classification of Stress
• Major Stresses Occurred in Plants
• Conclusion

3. Introduction
• Stress in plants refers to external conditions that adversely affect
growth, development or productivity of plants

4. Strategy to face the stress conditions
Stress
Resistance
Stress
Avoidance
Stress
Tolerance

5. Plant Response to Stress
Stress Response
Avoidance
Susceptibility
Resistance
Survival
Growth Death Survival

6. Classification of Stress
Abiotic Stress Biotic Stress
Physical Stress Chemical Stress  Allelopathy
 Competition
 Disease
 Pest
 Human activities
 Water(high/low)  Oxidative Stress
 Temperature  Heavy Metals
 Light  Pesticides
 Radiation  Toxins
 Wind  Soil pH
 Salinity Stress

7. Major Stresses Occurred in Plants
Reduced
Growth
Drought Stress
(Reduced water availability)
Loss of turgor Impaired mitosis
Prevented cell
elongation
Limited cell
division

8. Waterlogging or Flooding Stress

9. Temperature Stress
Temperature
Stress
Low
Temperature
Stress
Freezing Chilling
High
Temperature
Stress

10. Oxidative Stress
Reactive
oxygen species
Oxidative
Stress
Herbicides
Intense light Drought
Heavy metals
Pathogen
Wounding
Soil pH Salinity

11. Conclusion