Abiotic Stres Effect on Plant by Environment

PLANT BIOLOGY WITH RESPECT TO ABIOTIC STRESSES TO ENVIRONMENT

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Plant biology with respect to Abiotic stresses to environment

Biology assignment:-
Given by MAM MARYIM
To
Group # 4

Group members:-
UMMA-E-FARWA (34)

ADEEB DANISH (20)

MUHAMAD SHEHZAD (33)

Content
    • Abiotic stress
    • Abiotic stress conditions
    • Drought
    • Salinity
    • High temperature
    • Chilling
    • Flooding
    • Troposphere ozone
    •   Oxidative damage
    • Defense mechanism

Plant biology with respect to Abiotic stresses to environment

ABIOTIC STRESS:-

      Abiotic stress is defines as the negative impact of non-living factors on the living organisms in a specific environment
Plants being sessile organisms are exposed to external factors that can be stressful in such a way that development, growth and reproduction or the yield of crops becomes compromised. Expanding extensive physiological studies, the last decades has seen a focus on genes and biochemical pathway that determine whether plants are sensitive or tolerant to the many different stress factors: heat, cold & freezing, drought salinity, flooding or oxidizing agents.

Abiotic stress conditions

The most commonly encountered stress factor are drought flooding or submergence, temperature extremes such as heat stress, cold spells and freezing and soil ion content. With the latter typically in the form of increased salinity. Stress may also occur in the form of natural or man-made excess of heavy metal ion content. In addition, defrost of inorganic and nitrogen, to name only the ions important for plant growth, may restrict plant development. Furthermore, residual of chemicals used in normal crops may generate stress; because such compounds may reach the underlying aquifer or persist in the soil finally the continued modification of the atmosphere by human activities is of some concern. One example in this respect is the acidification of soils and waterways based on... [continues]

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