Abstract
After inoculation with Cladosporium fulvum (syn. Fulvia fulva), the causal agent of tomato leaf mold, tomato fruits and leaves accumulate the polyacetylenic phytoalexins cis-heptadeca-l,9-diene-4,6-diyne-3,8-diol (falcarindiol) and probably cis-heptadeca-l,9-diene-4,6-diyne-3-ol (falcarinol); in addition fruits also accumulate the novel compound, cis-tetradeca-6-ene-1,3-diyne-5,8-diol. Maximal concentrations of falcarindiol and cis-tetradeca-6-ene-1,3-diyne-5,8-diol were 5 to 10 μ g−1 fresh wt. Complete mycelial growth inhibition of Cladosporium fulvum and Cladosporium cucumerinum in vitro occurred with about 6 and 18 μg ml−1 falcarindiol and cis-tetradeca-6-ene-1,3-diyne-5,8-diol, respectively. To our knowledge this is the first report on the occurrence of polyacetylenic phytoalexins in Solanaceae.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
