Identification and characterization of an NHP-biosynthetic pathway in defense and systemic acquired resistance in common bread wheat
Plant Signaling
Wheat fields that can mount a whole-plant immune response after a single infected stem could need far fewer fungicide applications — meaning cleaner grain and less chemical runoff into the streams near farms you know.
When a plant gets infected in one spot, it can send chemical alarm signals through its whole body so every leaf and stem becomes harder to infect — this is called systemic acquired resistance. Scientists have now found the specific chemical assembly line in bread wheat that makes the key alarm molecule. Understanding this in wheat is a big step toward breeding varieties that fight disease from the inside, reducing the need for sprays.
Key Findings
The NHP biosynthetic pathway — previously characterized mainly in the model plant Arabidopsis — was identified and functionally characterized in common bread wheat (Triticum aestivum).
NHP production in wheat is linked to activation of systemic acquired resistance (SAR), suggesting the pathway is conserved and functional across distantly related plant species.
This work provides a molecular basis for engineering or selecting wheat varieties with enhanced whole-plant immune priming, a trait with direct implications for reducing fungicide dependency in cereal production.
chevron_right Technical Summary
Researchers identified and characterized the biochemical pathway wheat uses to produce N-hydroxypipecolic acid (NHP), a small molecule that acts as a master immune signal, priming the entire plant for defense after a local infection. This extends a discovery previously made only in lab plants to one of the world's most important food crops.
Abstract Preview
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