scholarly journals Exogenously-applied 5-aminolevulinic acid modulates some key physiological characteristics and antioxidative defense system in spring wheat (Triticum aestivum L.) seedlings under water stress

2015 ◽  
Vol 96 ◽  
pp. 71-77 ◽  
Author(s):  
F. Kosar ◽  
N.A. Akram ◽  
M. Ashraf
Keyword(s):  
Triticum Aestivum ◽  
Water Stress ◽  
Spring Wheat ◽  
Aminolevulinic Acid ◽  
Triticum Aestivum L ◽  
Physiological Characteristics ◽  
Antioxidative Defense ◽  
Defense System ◽  
Antioxidative Defense System

scholarly journals Assessment of Ozone Sensitivity in Three Wheat Cultivars Using Ethylenediurea

Plants ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 80 ◽  
Author(s):  
Adeeb Fatima ◽  
Aditya Singh ◽  
Arideep Mukherjee ◽  
Tsetan Dolker ◽  
Madhoolika Agrawal ◽  
...  
Keyword(s):  
Biochemical Parameter ◽  
Triticum Aestivum L ◽  
Total Biomass ◽  
Enzymatic Antioxidants ◽  
Antioxidative Defense ◽  
Wheat Cultivars ◽  
Defense System ◽  
Efficient Technology ◽  
Antioxidative Defense System ◽  
Ozone Sensitivity

Three wheat (Triticum aestivum L.) cultivars [HD 2987 (ozone (O3) sensitive), PBW 502 (intermediately sensitive) and Kharchiya 65 (O3 tolerant)] with known sensitivity to O3 were re-evaluated using ethylenediurea (EDU; 400 ppm) to ascertain the use of EDU in determiningO3 sensitivity under highly O3-polluted tropical environments. EDU treatment helped in improving the growth, biomass, photosynthetic pigments and the antioxidative defense system of all the wheat cultivars. Under EDU treatment, PBW 502 retained more biomass, while HD 2987 showed better performance and ultimately the greatest increment in yield. Cultivar Kharchiya 65 also showed a positive response to EDU as manifested with an increase in pigment contents, total biomass and enzymatic antioxidants; however, this increment was comparatively lower compared to the other two cultivars. The results indicated that EDU did not have many physiological effects on cultivars but helped in counteracting O3 primarily by scavenging reactive oxygen species and enhancing the antioxidative defense system where superoxide dismutase emerged as the major responsive biochemical parameter against ambient O3. The observed results clearly indicated that differential O3 sensitivity in three wheat cultivars established by the previous study is in accordance with the present study using EDU as a sensitivity tool, which is an easy and efficient technology in comparison to chamber and Free-Air Carbon dioxide Enrichment (FACE) experiments although its mechanistic understanding needs to be further validated.

scholarly journals Sodium silicate mediated response of antioxidative defense system in Lycopersicon esculentum mill. under water stress

2017 ◽  
Vol 9 (2) ◽  
Author(s):  
Chanchal Malhotra ◽  
Riti Thapar Kapoor ◽  
Deepak Ganjewala ◽  
NB Singh
Keyword(s):  
Antioxidant Enzymes ◽  
Water Stress ◽  
Lycopersicon Esculentum ◽  
Water Deficit ◽  
Sodium Silicate ◽  
Antioxidative Defense ◽  
Defense System ◽  
Tomato Plants ◽  
Antioxidative Defense System ◽  
Water Stress Condition

<p dir="ltr"><span>The present study was designed to study the effect of water stress on </span><span>Lycopersicon esculentum</span><span> Mill. and role of sodium silicate in the protection of tomato plants under water deficit condition.</span></p><p dir="ltr"><span>Different biochemical parameters such as photosynthetic pigments, protein, sugar, MDA content, proline, nitrate reductase activity and activities of antioxidant enzymes (SOD, CAT, APX and POX) were examined in tomato leaves at 40 and 60 DAS by the standard methods. The lycopene and β-carotene contents</span><span>in tomato fruits were also analyzed at 60, 65 and 70 DAS.</span></p><p dir="ltr"><span>Water stress significantly decreased relative water content (RWC), pigment content, sugar and protein contents in tomato leaves at 60 DAS but the accumulation of proline was stimulated in tomato leaves under water deficit condition. The activities of antioxidant enzymes such as SOD, CAT, APX and POX were significantly increased under (3d and 6d) water stress condition at 60 DAS.</span></p><span id="docs-internal-guid-05eb48fe-e950-ee27-fc39-fe0ccdaffeb9"><span>This study offers first hand information on the water stress-induced oxidative stress in </span><span>Lycopersicon esculentum</span><span>and development of antioxidative defense system against drought.</span><span>The results obtained clearly indicated the positive impact of sodium silicate in protection of tomato plants under water deficit condition.</span></span>

Sign in / Sign up

Export Citation Format

Share Document