Effect of elicitation of cotton [(Gossypium hirsutum L.) cv. Y331B] with methyl jasmonate and ethephon in relation to secondary metabolites

Abstract

Cotton is a versatile plant grown for the fibers and these seeds. However, its culture dating numbers constraints productions including pest attacks. Faced with these attacks certain control methods prove ineffective. The research will be directed on stimulation of the natural defenses of the plant by applying elicitors to find an effective alternative to chemical control. Thus, the study of the influence of two elicitors (ethephon and methyl jasmonate) on the biosynthesis of phenolic compounds in the cultivar Y331B showed that the phenolic metabolism is significantly altered after treatment of the leaves by the elicitors. Two elicitors cause an increase in the production of phenolic compounds. However, the methyl jasmonate has the greater accumulation of phenolic compounds with respect to ethephon. Moreover, the co-processing of sheets by MeJA and ethephon has permit to obtain a significant increase in the levels of phenolic compounds.

Effect of the Oligosaccharid Fraction of Fusarium oxysporum f. sp. vasinfectum on the Activity of Phenolic Metabolism Enzymes in Cotton Leaves

“…Thus, TAL was the enzyme that participated most in the biosynthesis of phenolic compounds in FOS-treated plants. These results are similar to those obtained by Navigué et al [15] who elicited cotton with MEJA and ethephon.…”

“…Vasinfectum (FOV) stimulated the production of phenolic compounds in cotton. Furthermore, our results are similar to those obtained by Navigué et al [15] using MEJA and ethephon as elicitors in cotton. Similarly, several authors have reported an activation of biosynthetic enzymes under the effect of MeJA in tomato [17].…”

“…Phenylalanine ammonia-lyase (PAL) and tyrosine ammonialyase (TAL), the main precursors of many phenolic compounds, would possess fungal activity [13]. Similarly, several authors have reported activation of phenolic biosynthetic enzymes under the effect of MeJA and summerphon in cotton [14,15]. The work of EL Bellaj and EL Hadrami [16] also showed that peroxidase activity in resistant plants increases during pathogen attack, in order to fight against their invasion.…”

Antioxidant Responses and Phytochemical Accumulation in Raphanus Species Sprouts through Elicitors and Predictive Models under High Temperature Stress

“…[ 63 ] showed improvements in phenolic contents in grapes through methyl jasmonate application. Additionally, other authors found that the elicitation of different plants with methyl jasmonate and/or ethephon led to changes in secondary metabolites [ 64 , 65 ]. This research indicates that the application of elicitors like methyl jasmonate, in combination with other compounds, can effectively enhance the accumulation of bioactive compounds in plants, regardless of their maturity stage.…”