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The New Insights of Abiotic Stress in Agriculture

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Title The New Insights of Abiotic Stress in Agriculture
Not Available
 
Creator Mukesh Berwal
 
Subject Abiotic stress, bioactive compounds
 
Description Not Available
Abiotic stresses are the prime limiting factors for agricultural
production and productivity. Crop plants need to muddle through
adverse external pressure fashioned by environmental and edaphic
conditions/abiotic stresses with their intrinsic biological mechanisms,
failing which their growth, development, and productivity
suffer adversely. Dominant abiotic stresses comprise drought,
high/low temperature, soil salinity, light intensity, submergence,
hypoxic conditions and nutrient starvation. Approximately 64%
of the global land area is affected with water deficit (Drought),
13% with flood (anoxia), 6% with soil salinity, 9% with mineral
deficiency, 15% with acidic soils and 57% with soil acidity. Abiotic
stresses adversely affect growth, development, and significantly
limit the global agricultural productivity through impairing cellular
physiology/biochemistry via elevating reactive oxygen species
(ROS) generation. The enhanced production of ROSs during
stress can pose a threat to cells but it is also thought that elevated
ROSs act as signals for the activation of stress-response and defense
pathways. The product of these defense pathways are bioactive
compounds (also known as secondary metabolites), which
leads to the plant defense mechanism against the osmotic stress
occurred and neutralize these ROSs and prevent the disruptions
in plants cellular physiology/biochemistry. These secondary metabolites
are divided in many groups like phenols, flavonoids, alkaloids,
steroids, terpens, wax, gum, tannins, suberin etc. This is the
one aspect to see the abiotic stresses in agriculture.
Not Available
 
Date 2019-04-10T05:00:17Z
2019-04-10T05:00:17Z
2019-03-01
 
Type Article
 
Identifier 2581-365X
http://krishi.icar.gov.in/jspui/handle/123456789/18370
 
Language English
 
Relation Not Available;
 
Publisher ACTA SCIENTIFIC