New Delhi researchers found a protein that lets a chewed leaf warn the others

Researchers in New Delhi have identified a protein that helps a plant warn leaves that an insect has not reached yet. The Hindu reported on October 30, 2026, that the work was done at the National Institute of Plant Genome Research. When one leaf is chewed, defense systems switch on. The newly characterised protein is part of how that alarm travels to undamaged leaves. Plants cannot flee and have no nervous system, so the signal has to move through the plant itself.

The Hindu said the result suggests plants use a more complex defense than a single local reaction, and that it may have implications for designing crop chemicals that work with that defense. The photograph with the report is credited to Jyothilakshmi Vadassery. The article as published does not name a product, a farm trial, or a yield. A chemical that farmers could use is a possibility the story raises. It is not a treatment already shown in a field. The news is the protein and the path the alarm takes.