Microbial production platform for salicylate glucoside (SAG) as a plant protection agent
Heterologous biosynthesis platform in E. coli producing salicylate glucoside (SAG), a natural compound that boosts plant defense against pathogens and abiotic stresses. Validated in Arabidopsis against Pseudomonas syringae; ready for broader plant and stress testing with industry partners.
Overview
This offering is a microbial engineering platform that produces salicylate glucoside (SAG), a natural plant-derived compound associated with salicylic acid metabolism and plant defense signaling. SAG is manufactured through heterologous biosynthesis using Escherichia coli as a surrogate production host, enabling scalable production of a compound that is otherwise difficult to isolate in useful quantities directly from plants. The intended application is prophylactic plant protection: applying SAG to crops prior to stress exposure to prime natural defense pathways against subsequent biological threats such as bacterial pathogens and abiotic challenges including drought, salinity, and heavy metal exposure.
The value proposition centers on a novel, biologically inspired crop protection input that complements existing plant growth regulator and crop protection portfolios. By leveraging the host plant's own salicylic acid defense metabolism, SAG offers a mechanism-based approach to strengthening plant resilience.
Technical specifications
Core technology:
- Heterologous biosynthesis of small molecule natural products in engineered microbial hosts
- E. coli-based production platform for salicylate glucoside (SAG)
- Built on a research program that helped pioneer heterologous biosynthesis approaches for natural product manufacturing
Validated capabilities:
- Successful heterologous production of SAG in E. coli
- Proof-of-concept demonstration that SAG protects Arabidopsis thaliana against challenge by Pseudomonas syringae
- Manuscript submitted documenting initial biological validation results
Proposed validation activities:
- Extension of SAG protective testing across additional plant species beyond Arabidopsis
- Evaluation against a broader range of infectious agents and pathogens
- Molecular diagnostic characterization (such as qRT-PCR gene expression analysis) to elucidate mechanism of action
- Assessment of protective effects against abiotic stresses including drought, salinity, and heavy metal exposure
Technology readiness level
The technology is at an early-to-mid stage of development. The heterologous production of SAG in E. coli has been demonstrated, and initial biological validation in Arabidopsis thaliana against Pseudomonas syringae has produced encouraging results documented in a submitted manuscript. The current opportunity is to expand validation across additional plant species, pathogen types, and abiotic stress conditions. Further characterization of the molecular mechanisms underlying SAG activity is needed to support broader commercial development and integration into crop protection or plant growth regulator product lines.
About University at Buffalo, State University of New York
University at Buffalo is a comprehensive public research university and a leading campus in the State University of New York system. Industry engagement is anchored by co-located labs on a downtown medical campus, a research and technology park with incubators, shared core facilities, and co-op talent pipelines. Partnerships with regional hospitals enable clinical studies and translation, while proximity to the U.S.–Canada border and the binational Great Lakes corridor facilitates cross‑border collaboration. Research is supported by competitive federal funding from NIH, NSF, DOE, and DoD, alongside New York State innovation programs. A dedicated technology transfer office provides IP management, licensing, and startup support.
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