Black dead arm;
Botryosphaeria obtusa;
Grapevine disease;
Isocoumarins;
Melleins;
Phytotoxins;
BOTRYTIS-CINEREA;
ASPERGILLUS-OCHRACEUS;
RESVERATROL;
FUNGUS;
4-HYDROXYMELLEIN;
METABOLITES;
D O I:
10.1007/s10658-008-9419-6
中图分类号:
S3 [农学(农艺学)];
学科分类号:
0901 ;
摘要:
A bioassay-guided fractionation of a culture filtrate of Botryosphaeria obtusa led to the isolation of four dihydroisocoumarins, named mellein 1, 4-hydroxymellein 2, 7-hydroxymellein 3 and the new 4,7-dihydroxymellein 4. LC-UV-DAD-MS analysis of vine wood infected by B. obtusa revealed the presence of mellein (1). Botryosphaeria obtusa was also able to oxidise wood delta -resveratrol into the dimer delta-viniferin. The structures of isolated phytotoxins were established on the basis of IR, MS, 1D and 2D NMR.