Modulating stilbenes in peanut cells: a novel approach with metabolic modulators

Area of Science:

• Plant Biotechnology
• Metabolic Engineering
• Natural Product Biosynthesis

Background:

• Stilbenes like resveratrol are valuable plant metabolites with limited bioproduction yields.
• Peanut (Arachis hypogaea) cells offer a potential but underexplored system for stilbene biosynthesis.
• Modulating metabolic pathways is key to enhancing the production of these important compounds.

Purpose of the Study:

• To investigate the modulation of stilbene production pathways in peanut cells for the first time.
• To evaluate the effects of L-phenylalanine, sodium malonate dibasic, and cerulenin on stilbene biosynthesis.
• To establish peanut cell cultures as a viable platform for enhanced stilbene production.

Main Methods:

• Peanut callus and cell suspension cultures were treated with varying concentrations and time points of L-phenylalanine, sodium malonate dibasic, and cerulenin.
• Cell growth and the production of resveratrol, piceid, and piceatannol were assessed.
• Distinct responses between static and suspension cultures were analyzed based on growth phase and modulator treatment.

Main Results:

• Metabolic modulators significantly influenced stilbene production patterns in peanut cells.
• 0.0002 mM cerulenin treatment led to a tenfold increase in resveratrol production in callus cultures.
• In suspension cultures, 0.5 mM sodium malonate dibasic enhanced resveratrol during the lag phase, while piceatannol and piceid were favored during the stationary phase.

Conclusions:

• Metabolic modulators effectively regulate stilbene biosynthesis in peanut cells.
• Peanut cell cultures, particularly under specific modulator treatments and growth phases, represent a promising system for stilbene bioproduction.
• This study provides a foundation for optimizing peanut cell-based platforms for the sustainable production of valuable stilbenes.