Isooctane extraction of cells from Nocardia restrictus and Corynebacterium simplex followed by chromatographic separation gave yellow crystals which were identified as vitamin K2(35) by its ultraviolet absorption, nuclear magnetic resonance spectrum, and mass spectrometry. The purified vitamin K2(35) was found to stimulate steroid 1,2-dehydrogenase obtained from cell free extracts of N. restric...

Esca disease of grapevine is gaining increasing importance in Central European wine-growing countries. Several fungi, all of which are wood-inhabiting, were found to be associated with the disease. The taxa thought to act as main causal agents are the basidiomycete, Fomitiporia mediterranea, and, less frequently, the deuteromycetes, Phaeomoniella chlamydospora and Phaeoacremonium aleophilum. In...