20-Hydroxyecdysone protects wheat seedlings (Triticum aestivum L.) against lead stress

Lamhamdi, Mostafa; Lafont, René; Rharrabe, Kacem; Sayah, Fouad; Aarab, Ahmed; Bakrim, Ahmed

doi:10.1016/j.plaphy.2015.11.006

Cited by 16 publications

(6 citation statements)

References 34 publications

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“…Hu et al [1] showed that 20E protected against oxidative stressinduced neuronal injury by scavenging free radicals and decreasing MDA concentration. Lamhamdi et al [8] also reported that 20E treatment notably decreased MDA concentration in wheat seedlings under lead stress. Here, we also found that exogenous 20E treatment significantly reduced the increase in MDA, H 2 O 2 concentration and the production rate of O 2…”

Section: Discussionmentioning

confidence: 89%

“…Yasmeen et al [27] suggested that an efficient antioxidant defense system provided by moringa leaf extract might play an important role in the tolerance of wheat seedlings to salt stress. Lamhamdi et al [8] also showed that exogenous application of 20E significantly increased the activities of SOD, POD and APX in wheat seedlings exposed to lead stress. A similar result was found here, where the activities of the ROS-scavenging enzymes, SOD, POD and CAT, were significantly increased in 20E-treated wheat seedlings under salt stress, suggesting that the spraying 20E on leaves enhanced the activities of antioxidant defense enzymes and conferred salt tolerance to wheat seedlings.…”

Section: Discussionmentioning

confidence: 93%

“…Hu et al [7] found that 20E could protect against oxidative stress-induced neuronal injury by scavenging free radicals and modulating NF-κB and JNK pathways. Lamhamdi et al [8] have also shown that 20E treatment had a positive effect on the growth and metabolism of wheat seedlings against lead stress. However, little is known about the antioxidative effect of 20E on the seedlings of wheat (Triticum aestivum L.), one of the most commercial crops in the world, under both normal and salt-stressed conditions.…”

Section: Introductionmentioning

confidence: 91%

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20-hydroxyecdysone protects wheat seedlings from salt stress

Li¹,

Han²,

Tang³

et al. 2018

Arch biol sci (Beogr)

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20-Hydroxyecdysone (20E), a molting hormone of insects, is the most abundant phytoecdysteroid (PE) produced by plants, where it represents a protective molecule against insect herbivores. The objective of the investigation is to determine the effect of 20E on the growth, physiological and biochemical characteristics and the transcript levels of antioxidant enzymes of wheat seedlings under salt stress. Our results showed that exogenous 20E was able to significantly alleviate salt-induced oxidative damage in wheat seedlings. It most likely acts by decreasing the concentration of malondialdehyde (MDA) and the rate of superoxide radical (O 2 •−) generation, and by increasing the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), concentrations of ascorbic acid (AsA) and glutathione (GSH), and the gene expression levels of SOD, POD, CAT. It was suggested that foliar spraying with 20E could efficiently protect wheat seedlings against salt-induced oxidative stress. The results also show that 20E had a positive physiological effect on the growth of salt-stressed seedlings. This is the first report dealing with the effect of 20E pretreatment in the enhancing of wheat seedling tolerance under salt stress.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 91%

See 1 more Smart Citation

20-hydroxyecdysone protects wheat seedlings from salt stress

Li¹,

Han²,

Tang³

et al. 2018

Arch biol sci (Beogr)

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“…Thus, it was found that a 20-HE concentration of 10 −4 M proved to be more beneficial than 10 −5 M, as it induced seedling growth in different cotton varieties [ 172 ]. Lamhamdi, et al [ 173 ] reported that, in Triticum aestivum , pretreatment of 20-HE (3 or 5 µM) efficiently enhanced germination traits, growth parameters, metabolic responses, and antioxidant systems during stress.…”

Section: Biological Activity Of Ecdysteroids In Plantsmentioning

confidence: 99%

“…PEs are insect molting hormones that accumulate in several plant species and are regarded as potent allelochemicals that enhance plant tolerance against phytophagous insects and nematodes. PEs exhibit antistress activity in animals, algae, and plants [ 173 ]. PEs enhance abnormal molting in several arthropods, having a lethal effect.…”

Section: Role Of Phytoecdysteroids In Stressmentioning

confidence: 99%

Phytoecdysteroids: Distribution, Structural Diversity, Biosynthesis, Activity, and Crosstalk with Phytohormones

Arif

Singh

Bajguz

et al. 2022

IJMS

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Phytoecdysteroids (PEs) are naturally occurring polyhydroxylated compounds with a structure similar to that of insect molting hormone and the plant hormone brassinosteroids. PEs have a four-ringed skeleton composed of 27, 28, 29, or 30 carbon atoms (derived from plant sterols). The carbon skeleton of ecdysteroid is known as cyclopentanoperhydrophenanthrene and has a β-sidechain on C-17. Plants produce PEs via the mevalonate pathway with the help of the precursor acetyl-CoA. PEs are found in algae, fungi, ferns, gymnosperms, and angiosperms; more than 500 different PEs are found in over 100 terrestrial plants. 20-hydroxyecdysone is the most common PE. PEs exhibit versatile biological roles in plants, invertebrates, and mammals. These compounds contribute to mitigating biotic and abiotic stresses. In plants, PEs play a potent role in enhancing tolerance against insects and nematodes via their allelochemical activity, which increases plant biological and metabolic responses. PEs promote enzymatic and non-enzymatic antioxidant defense systems, which decrease reactive oxygen species in the form of superoxide radicals and hydroxyl radicals and reduce malondialdehyde content. PEs also induce protein biosynthesis and modulate carbohydrate and lipid synthesis. In humans, PEs display biological, pharmacological, and medicinal properties, such as anti-diabetic, antioxidant, anti-microbial, hepatoprotective, hypoglycemic, anti-cancer, anti-inflammatory, antidepressant, and tissue differentiation activity.

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