Metabolomics-driven identification of rice blast resistance metabolites for crop protection
A metabolomics-based research platform at Ohio State University identifying key metabolites and metabolic pathways involved in rice blast resistance. Using NMR and mass spectrometry profiling across multiple genetic resistance lines, the project aims to enable targeted breeding or chemical treatments to enhance blast resistance in grain crops.
Overview
Rice blast, caused by the fungus Magnaporthe oryzae, is one of the most destructive diseases affecting global rice production. Existing chemical and biological control methods are often ineffective, costly, or environmentally harmful. This research program at The Ohio State University applies untargeted metabolomics to uncover the specific metabolites and biochemical pathways that confer natural resistance to rice blast. By comparing two genetically distinct resistance lines—sds2 and Piz-t—against wild-type controls, the team aims to identify conserved metabolic signatures of pathogen defense. Ultimately, these findings could inform breeding strategies or targeted chemical treatments that enhance blast resistance across a range of grain crop species, offering a more sustainable approach to crop protection.
Technical specifications
Research approach:
- Comparative metabolomic profiling of two rice blast resistance lines (sds2 and Piz-t) and wild-type controls
- Mass spectrometry-based metabolomics to identify differentially regulated features (m/z values) associated with resistance
- NMR-based untargeted metabolomics and structure elucidation to identify and characterize specific resistance-related metabolites
- Inoculation of three-week-old seedlings with blast isolate R01-1, with leaf tissue harvested at 0, 48, and 96 hours post-inoculation
- Water-inoculated plants serving as negative controls, with four biological replicates per cultivar
- Cross-comparison of broad-spectrum (Piz-t) and targeted (sds2) resistance mechanisms to identify overlapping metabolic pathways
Key capabilities:
- Protocols optimized for plant-based sample analysis in the Hatzakis laboratory
- Integration of mass spectrometry and NMR platforms for comprehensive metabolite identification
- Pathway-level analysis linking specific metabolites to fungal resistance mechanisms
Technology readiness level
The project is at an early-to-mid stage of development. Preliminary mass spectrometry-based comparisons have already identified several strongly up-regulated metabolic features shared between both sds2 and Piz-t resistance lines, providing initial support for the central hypothesis. The next phase will employ NMR-based untargeted metabolomics to confirm and structurally characterize these candidate metabolites. The research is positioned at Technology Readiness Level 2–3, with demonstrated analytical proof-of-concept and ongoing validation in controlled growth chamber conditions. Commercial deployment as a breeding marker or crop protection strategy would require further validation across additional crop species and field conditions.
About The Ohio State University
The Ohio State University is a comprehensive public land‑grant research university in Columbus, serving one of the nation’s largest student populations and a broad research enterprise. Industry partners engage through an integrated academic medical center for clinical translation, a campus‑adjacent innovation district for co‑located projects, and a statewide extension network that pilots solutions across Ohio. Corporate engagement provides a single front door for sponsored research, talent pipelines, and streamlined agreements. Research is supported by competitive federal funding from agencies such as NIH, NSF, DOE, USDA, DoD, and NASA. A dedicated technology transfer office and venture support help protect IP, license technologies, and launch startups.
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