A phytotoxic macrolide and a hexaketide, putaminoxins B and C, respectively, were isolated together with putaminoxin, the main phytotoxin, from liquid culture filtrates of Phoma putaminum, the causal agent of leaf necrosis of Erigeron annuus, a common weed of fields and pastures. Putaminoxins B and C were characterized, using spectroscopic methods, as a new disubstituted nonenolide and a new disubstituted cyclononendione, respectively. Assayed on leaves of weedy and cultivated host plants, putaminoxins C showed toxic effects similar to those produced by putaminoxin. Copyright (C) 1997 Elsevier Science Ltd.
Putaminoxins B and C from Phoma putaminum / Evidente, Antonio; Lanzetta, Rosa; R., Capasso; Andolfi, Anna; M., Vurro; M. C., Zonno. - In: PHYTOCHEMISTRY. - ISSN 0031-9422. - STAMPA. - 44:(1997), pp. 1041-1045. [10.1016/S0031-9422(96)00685-1]
Putaminoxins B and C from Phoma putaminum
EVIDENTE, ANTONIO;LANZETTA, ROSA;ANDOLFI, ANNA;
1997
Abstract
A phytotoxic macrolide and a hexaketide, putaminoxins B and C, respectively, were isolated together with putaminoxin, the main phytotoxin, from liquid culture filtrates of Phoma putaminum, the causal agent of leaf necrosis of Erigeron annuus, a common weed of fields and pastures. Putaminoxins B and C were characterized, using spectroscopic methods, as a new disubstituted nonenolide and a new disubstituted cyclononendione, respectively. Assayed on leaves of weedy and cultivated host plants, putaminoxins C showed toxic effects similar to those produced by putaminoxin. Copyright (C) 1997 Elsevier Science Ltd.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
