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The phenomenon of pistil abortion widely occurs in Japanese apricot(Prunus mume Sieb.et Zucc)and has seriously affected the yield in production.In this study,a CCoAOMT homologue,PmCCoAOMT,was isolated from Japanese apricot and the bioinformatics software analyzed the structural characteristics.The PmCCoAOMT protein was detected to be located in the cell cytoplasm by onion transient expression experiment.Real-time PCR analysis showed that PmCCoAOMT gene expressed in the prophase development of pistil and the expression level in Daqiandi was higher than Longyan.