Coronatine is a polyketide phytotoxin produced by several members of the Pseudomonas syringae group of pathovars such as atropurpurea, glycinea, maculicola,morsprunorum and tomato. Coronatine was used to study the regulatory genes: corP, corS and corR. It was used to study the stimulation of ethylene synthesis in Nicotiana tabacum leaves.
