A study from UC Riverside has discovered a peptide in the Australian finger lime that can destroy the bacteria causing citrus greening, a global citrus tree disease. The peptide not only kills the bacteria but also activates the plant's immune system to prevent new infections. The research, published in the Proceedings of the National Academy of Sciences, shows that the peptide's corkscrew-like structure quickly punctures the bacterium, killing it quickly. The researchers have licensed the SAMP technology to Invaio Sciences and are conducting field tests in Florida. They are also exploring if the peptide can inhibit diseases in other crops caused by the same bacteria family.