food-allergy
Food allergy is an abnormal immune response triggered by specific proteins found in certain foods, ranging from mild symptoms to life-threatening anaphylaxis. In plant science, understanding food allergies is critical because many of the most common allergens—such as those in legumes, tree nuts, and grains—are proteins encoded by plant genomes. Research into plant allergen structure, expression, and function helps scientists develop hypoallergenic crop varieties through breeding or gene editing, with significant implications for food safety and public health.
open_in_new WikipediaPubMed · 2026-04-08
Bacteria naturally found in human saliva and the small intestine can break down peanut proteins, reducing allergic reactions. This research shows that people with more of these bacteria — especially a genus called Rothia — experience milder symptoms when exposed to peanuts.
Two bacterial species — Rothia and Staphylococcus — were shown to degrade the two main peanut allergens (Ara h 1 and Ara h 2) in laboratory tests, significantly reducing immune-binding activity.
Mice colonized with Rothia bacteria showed measurably lower levels of peanut allergens in their blood and tissues after eating peanuts, and experienced less severe anaphylactic reactions.
In human clinical studies, peanut-allergic patients who showed greater tolerance to accidental peanut exposure had significantly higher abundances of peanut-degrading bacteria, including Rothia, compared to less-tolerant patients.
