Cold-induced peptide signalling secures pollen resilience and crop yield.
Chen S, Zou Y, Cui H, Dong Q, Yang D
Climate Adaptation
Every spring cold snap that catches your tomato plants mid-bloom isn't just bad luck — it's triggering pollen death at the molecular level, and researchers have now found the chemical alarm system that can stop it.
When temperatures drop during flowering, pollen in tomato and rice plants often dies before it can fertilize anything — wiping out the harvest. Scientists found two tiny molecular messengers that plants produce in response to cold, which act like a protective signal keeping pollen healthy enough to do its job. By dialing those messengers up, the plants held onto far more of their fruit even after cold snaps — and the same mechanism worked in rice, suggesting it could protect many food crops.
Key Findings
Two small signaling peptides (RGF9 and RGF10) specifically protect tomato pollen from cold-induced abortion; plants lacking them are otherwise normal but lose pollen after cold stress
Overexpressing these peptides in tomato plants prevented up to 52% of cold-induced yield losses
The same protective pathway exists in rice, where boosting homologous peptides recovered 18.3% of grain yield lost to cold stress
chevron_right Technical Summary
Scientists discovered a molecular alarm system in tomato plants that protects pollen from cold damage. By boosting two tiny signaling peptides, they prevented up to 52% of cold-induced crop losses in tomatoes — and found the same protective mechanism works in rice, pointing toward a broad strategy for cold-proofing crops.
Abstract Preview
Cold weather cause severe crop losses. Climate change exacerbates the unpredictability and frequency of such weather events, highlighting the need for cold-resilient crops1. Cold-induced pollen abo...
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