Host-Derived Acetogenins Involved in the Incompatible Parasitic Relationship between Cuscuta reflexa (Convolvulaceae) and Ancistrocladus heyneanus (Ancistrocladaceae)* - Bringmann, G; Schlauer, J; Rückert, M; Wiesen, B; Ehrenfeld, K; Proksch, P; Czygan, F -C (Plant Biology, 1999)