4 rezultate
Two new sesquiterpene glycosides, 11R,12-dihydroxy-6(7)-spirovetiven-8-one-9-O-beta-D-glucopyranoside (1) and rishitin M1-13-O-beta-D-glucopyranoside (2), have been isolated from the leaves of Nicotiana tabacum. Their structures were established by spectroscopic methods including (1)H, (13)C, and 2D
Six new 14-noreudesmane sesquiterpenoids, nicotabacosides A-F (1-6), along with five known sesquiterpenoids (7-11), were isolated from the leaves of Nicotiana tabacum. The structures of compounds 1-6 were elucidated as isorishitin 3-O-β-D-glucopyranoside (1), rishitin 3-O-β-D-glucopyranoside (2),
Metabolomics is providing new dimensions into understanding the intracellular adaptive responses in plants to external stimuli. In this study, a multi-technology-metabolomic approach was used to investigate the effect of the fungal sterol, ergosterol, on the metabolome of cultured tobacco cells.
Plants have the ability to continuously respond to microbial signals in their environment. One of these stimuli is a steroid from fungal membranes, ergosterol, which does not occur in plants, but acts as a pathogen-associated molecular pattern molecule to trigger defence mechanisms. Here we