Effects of Methyl Jasmonate on the Enzymatic Antioxidant Defense System in Maize Seedlings Subjected to Paraquat

Norastehnia, Akbar; Nojavan-Asghari, Majid

doi:10.3923/ajps.2006.17.23

Cited by 24 publications

(2 citation statements)

References 31 publications

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“…MeJA could induce antioxidant defense activity in plants to remove the possible toxic effects of free radicals, making the plants more resistant. Mitigation of ROS effects by MeJA was reported in the case of strawberry under drought stress and in maize seedlings subjected to paraquat [59]. Figure 5 shows that WFC at 65% led to slight increase in both potassium and phosphorus, while 45% WFC led to a marked decrease in potassium content compared to corresponding plant control.…”

Section: Enzyme Activitiesmentioning

confidence: 82%

“…It seems that MeJA plays a role in single transduction pathway in oxidative stress by the increase in CAT, SOD and POX activity. [59] reported also that signal transduction by MeJA occurs around 50 µmol and becomes inhibitory at concentration above 100 µmol. It has been reported that MeJA mitigated the ROS effects in straw berry under drought stress and in maize seedlings subjected to paraquat [58].…”

Section: Enzyme Activitiesmentioning

confidence: 95%

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Impact of Methyl Jasmonate on Antioxidant Activity and Some Biochemical Aspects of Maize Plant Grown under Water Stress Condition

Abdelgawad¹,

Khalafaallah²,

Abdallah³

2014

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A pot-culture study was undertaken to investigate the possible role of Methyl jasmonate (MeJA)treatment on the earlier vegetative growth stage and different chemical constituents of maize cultivar (Giza-2) plants subjected to water stress. The grains were divided into two groups: first group was pre-soaked in water, and the second one was pre-soaked in 50 μM MeJA for 8 h. The plants were subjected to different levels of water field capacity (WFC) 65%, 55% and 45%. The results showed that pre-soaking maize grains with MeJA led to increases in plant growth criteria evident in terms of plant height, fresh and dry weight of plant. The pigment levels concomitantly with total carbohydrates, total soluble sugar, polysaccharides, as well as free amino acids, proline and total protein content were markedly increased. Moreover, the application of the investigated MeJA significantly improved growth hormone in terms of IAA. In contrast ABA level was markedly declined in maize plant. The activities of oxidative CAT, POX and SOD were also increased with MeJA. In addition, the N, P and K content was increased significantly in shoot. As a conclusion, soaking maize grains with MeJA could alleviate the harmful effects of water stress.

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Section: Enzyme Activitiesmentioning

confidence: 82%

Section: Enzyme Activitiesmentioning

confidence: 95%