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- Title
Low doses of exogenous methyl jasmonate applied simultaneously with toxic aluminum improve the antioxidant performance of Vaccinium corymbosum.
- Authors
Ulloa-Inostroza, Elizabeth; Alberdi, M.; Meriño-Gergichevich, C.; Reyes-Díaz, M.
- Abstract
Aims: The effect of different MeJA doses applied prior to or simultaneously with toxic Al on biochemical and physiological properties of Vaccinium corymbosum cultivars with contrasting Al resistance was studied. Methods: Legacy (Al-resistant) and Bluegold (Al-sensitive) plants were treated with and without toxic Al under controlled conditions: a) without Al and MeJA, b) 100 μM Al, c) 100 μM Al + 5 μM MeJA, d) 100 μM Al + 10 μM MeJA and e) 100 μM Al + 50 μM MeJA. MeJA was applied to leaves 24 h prior to or simultaneously with Al in nutrient solution. After 48 h, Al-concentration, lipid peroxidation (LP), HO, antioxidant activity, total phenols, total flavonoids, phenolic compounds and superoxide dismutase activity (SOD) of plant organs were analyzed. Results: Al-concentrations increased with Al-treatment in both cultivars, being Al, LP and HO concentrations reduced with low simultaneous MeJA application. Higher MeJA doses induced more oxidative damage than the lowest. Legacy increased mainly non-enzymatic compounds, whereas Bluegold increased SOD activity to counteract Al. Conclusions: Low MeJA doses applied simultaneously with Al increased Al-resistance in Legacy by increasing phenolic compounds, while Bluegold reduced oxidative damage through increment of SOD activity, suggesting a diminution of its Al-sensitivity. Higher MeJA doses could be potentially toxic. Studies are needed to determine the molecular mechanisms involved in the protective MeJA effect against Al-toxicity.
- Subjects
VACCINIUM corymbosum; EFFECT of aluminum on plants; PLANT physiology; PLANTS; OXIDATIVE stress; SUPEROXIDE dismutase; LIPID peroxidation (Biology); JASMONATE; PLANT phenols
- Publication
Plant & Soil, 2017, Vol 412, Issue 1/2, p81
- ISSN
0032-079X
- Publication type
Article
- DOI
10.1007/s11104-016-2985-z