Contributes to jasmonic acid biosynthesis by initiating the beta-oxidative chain shortening of its precursors. ATP + CoA + hexadecanoate = AMP + diphosphate + hexadecanoyl-CoA (9Z)-octadecenoate + ATP + CoA = (9Z)-octadecenoyl-CoA + AMP + diphosphate ATP + CoA + octadecanoate = AMP + diphosphate + octadecanoyl-CoA ATP + CoA + tetradecanoate = AMP + diphosphate + tetradecanoyl-CoA (9Z,12Z)-octadecadienoate + ATP + CoA = (9Z,12Z)-octadecadienoyl-CoA + AMP + diphosphate ATP + CoA + hexanoate = AMP + diphosphate + hexanoyl-CoA ATP + CoA + heptanoate = AMP + diphosphate + heptanoyl-CoA (9Z,12Z,15Z)-octadecatrienoate + ATP + CoA = (9Z,12Z,15Z)-octadecatrienoyl-CoA + AMP + diphosphate ATP + CoA + OPC-6 = AMP + diphosphate + OPC-6-CoA kcat is 1.26 sec(-1) with hexanoic acid as substrate (PubMed:18267944, PubMed:15677481). kcat is 1.38 sec(-1) with nonanoic acid as substrate (PubMed:18267944, PubMed:15677481). kcat is 2.31 sec(-1) with tetradecanoic acid as substrate (PubMed:18267944, PubMed:15677481). kcat is 0.3 sec(-1) with OPDA as substrate (PubMed:18267944, PubMed:15677481). kcat is 0.41 sec(-1) with OPC-6:0 as substrate (PubMed:18267944, PubMed:15677481). Expressed at low level in leaves. By methyl jasmonate. Both substrate-binding domains (SBD1 and SBD2) are involved in the substrate recognition, and are sufficient to confer the substrate specificity. No obvious phenotype in growth, root and flower development, fertility, reproduction and morphology. Belongs to the ATP-dependent AMP-binding enzyme family.