Synergistic effects of copper and ethylene on resveratrol synthesis in peanuts

Abstract

This study aimed to investigate the effects of exogenous copper and ethylene on resveratrol biosynthesis in peanut buds. In this study, different concentrations of copper sulfate and ethephon were used to induce peanut bud roots. Resveratrol content was determined using high‐performance liquid chromatography (HPLC). The interaction effects of the two inducers were analyzed using regression and response surface methodology. Results showed that resveratrol biosynthesis increased with the increase in copper sulfate concentration. Resveratrol synthesis showed an increasing trend when the concentration of ethephon was from 5 to 7 mmol/L. The resveratrol content reached a maximum value of 7.7 μg/g when the concentration of ethephon was 7 mmol/L and then decreased with an increase in ethephon. Response surface analysis revealed that the combination of 0.1 mmol/L copper sulfate and 5 mmol/L ethephon was effective and resulted in the induction of resveratrol biosynthesis in peanut buds.

Trends in the Potential of Stilbenes to Improve Plant Stress Tolerance: Insights of Plant Defense Mechanisms in Response to Biotic and Abiotic Stressors

“…Exogenous inducers are a special class of triggers that are able to turn on the activity of enzymes involved in metabolic processes, thereby increasing the amount of secondary metabolites and sometimes even inducing new compounds. β-Aminobutyric acid (BABA) is an exogenous inducer of nonprotein amino acids that enables the host to synthesize antifungal compounds, which in turn modulate cross-talking phytohormone signaling, making BABA ideal for agricultural applications. − The WRKY family is a plant-specific zinc-finger transcriptional regulator, named after the highly conserved heptapeptide consisting of WRKYGQK at its N-terminus. Studies to elucidate VvWRKY18 regulation of the biosynthesis of stilbenes in BABA-pretreated Botrytis -infected grapes indicate transcriptional and secondary metabolite involvement.…”