Assessment of Morpho-Physiological and Biochemical Responses of Perennial Ryegrass to Gamma-Aminobutyric Acid (GABA) Application Under Salinity Stress Using Multivariate Analyses Techniques

2021 ◽  
Author(s):  
Fakhrieh Ahmadi ◽  
Farzad Nazari ◽  
Naser Ghaderi ◽  
Jaime A. Teixeira da Silva
Keyword(s):  
Salinity Stress ◽  
Perennial Ryegrass ◽  
Multivariate Analyses ◽  
Aminobutyric Acid ◽  
Gamma Aminobutyric Acid ◽  
Biochemical Responses ◽  
Physiological And Biochemical

scholarly journals Mitigation of Drought Stress Damage by Exogenous Application of a Non-Protein Amino Acid γ– Aminobutyric Acid on Perennial Ryegrass

2013 ◽  
Vol 138 (5) ◽  
pp. 358-366 ◽  
Author(s):  
Sanalkumar Krishnan ◽  
Kevin Laskowski ◽  
Vijaya Shukla ◽  
Emily B. Merewitz
Keyword(s):  
Lipid Peroxidation ◽  
Drought Stress ◽  
Perennial Ryegrass ◽  
Foliar Spray ◽  
Aminobutyric Acid ◽  
Grass Species ◽  
Gamma Aminobutyric Acid ◽  
Protein Amino Acid ◽  
Growth Physiology ◽  
Stress Damage

Perennial ryegrass (Lolium perenne) is an important forage and turfgrass species that is sensitive to drought stress. The objective of this study was to investigate whether gamma aminobutyric acid (GABA) may play a role in promoting drought tolerance in grass species. GABA was exogenously applied as a foliar spray at the rate of 50 or 70 mm to perennial ryegrass ‘CSI’ under well-watered or drought-stressed conditions in a controlled-environment growth chamber. The effect of GABA on the growth physiology, drought stress response, antioxidant activity, and lipid peroxidation of perennial ryegrass exposed to drought stress was measured. GABA-treated perennial ryegrass exposed to drought stress had higher relative water content (RWC), turf quality, and peroxidase activity and lower wilt rating, canopy temperature depression, electrolyte leakage, and lipid peroxidation compared with untreated plants. GABA application had no significant effect on the activity of superoxide dismutase and catalase under well-watered and drought conditions. GABA application at 50 mm was found to be more effective in alleviating drought stress damage in perennial ryegrass. The results from this study suggest that GABA mitigated drought stress damage in perennial ryegrass by maintaining higher RWC and membrane stability.

scholarly journals Varietal differences in physiological and biochemical responses to salinity stress in six finger millet plants

2020 ◽  
Vol 26 (8) ◽  
pp. 1569-1582
Author(s):  
Asunta Mukami ◽  
Alex Ng’etich ◽  
Easter Syombua ◽  
Richard Oduor ◽  
Wilton Mbinda
Keyword(s):  
Salinity Stress ◽  
Finger Millet ◽  
Varietal Differences ◽  
Biochemical Responses ◽  
Physiological And Biochemical
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