Single Molecule Biostimulants for Broad-spectrum Crop Yield Enhancement

Background

Global food demand is climbing with population growth and dietary change, while climate change pushes in the opposite direction. Drought, flooding, heat stress, and increasingly erratic seasons suppress yield in the same fields that are being asked to produce more. Growers need tools that raise output and hold up when the weather turns.

Plant hormones are a targeted route to yield, but the economics defeat them. Many are structurally complex molecules that degrade in sunlight and heat; formulations tend to last roughly a week and must be made up on the day of use. That combination of cost and instability confines them to a handful of high-value crops.

The opportunity is a growth promoter that is cheap to synthesise, stable in storage, active across species, and reliable under real-world climatic stress.

Technology Overview

Durham scientists have developed a class of novel synthetic aryl sulfonamides that promote growth across the whole plant: root, shoot and leaf, at low application rates.

The compounds are produced by straightforward chemical synthesis, already demonstrated at kilogram scale with a clear route to further scale-up, and are stable for long-term storage. No fermentation, no cold chain, no same-day formulation.

The growth increase is a genuine gain in biomass: both fresh and dry weight rise, so the additional mass is new cellular material rather than water. Agronomically, that means yield without loss of quality.

Two properties distinguish these compounds from conventional plant growth regulators. Persistence: the growth benefit continues after the compound is no longer present, a priming effect. Structural specificity: screening of related structures shows activity depends on defined structural features, allowing bespoke versions to be produced for specific applications.

Stage of Development

Technology Readiness Level (TRL): 7. The technology has been validated in both field and greenhouse trials, demonstrating yield increases of 10–25% depending on crop and platform. Registration trials are being conducted by an independent service provider under the EU Fertilising Products Regulation, with product registration targeted for the end of 2026. EU REACH registration is in progress.

The compounds integrate into existing agricultural practice without modification: co-administered with standard inputs including fertilisers, fungicides and pesticides; active at low input levels; and delivered in liquid or solid form, or as a seed treatment.

Benefits

• Cheap to manufacture: straightforward chemical synthesis at kilogram scale
• Stable in storage: no same-day formulation, unlike conventional plant hormone products that degrade within about a week
• Broad applicability: active across monocots and dicots, in every crop species tested to date
• Genuine biomass gain: fresh and dry weight both increase, so yield rises without loss of quality
• Whole-plant effect: stimulates root, shoot and leaf tissue
• Persistent benefit: growth enhancement continues after the compound is gone, a priming effect not seen with conventional growth regulators
• Drops into existing practice: co-administered with standard inputs, at low application rates, in liquid or solid form
• Tunable: structure–activity understanding allows bespoke versions for specific crops and applications
• Protected: patent family covering a significant number of global territories

Applications

• Co-formulation with other standard inputs
• Standalone biostimulant across broadacre and horticultural crops
• Seed, bulb and tuber treatment
• Controlled-environment agriculture and vertical farming
• Commercial hydroponics
• High-value protected crops
• Turf and amenity grass
• Biomass and bioenergy crops
• Ornamentals and premium garden products

Opportunity

• Durham University is seeking expressions of interest from suitably positioned industry partners to take forward the commercial development of this technology via collaboration or licensing.