title: Crystallization and X-ray Analysis of Stemphyloxin I, a Phytotoxin from Stemphylium botryosum.
abstract: Certain isolates of the plant-pathogenic fungus Stemphylium botryosum produce a phytotoxin, stemphyloxin I. This toxin (C(21)H(34)O(6)) was crystallized and its structure was determined by x-ray crystallography to be a beta-ketoaldehyde trans-Decalin. This compound is a highly unusual natural product. Iron (Fe(3+)) controls production of toxin by this fungus. Furthermore, iron reacts with the toxin to yield a colored product which aids in its detection on chromatograms and in its quantitative estimation by colorimetry.;
authors.forename: I
authors.initials: I
authors.lastname: Barash
authors.forename: S
authors.initials: S
authors.lastname: Manulis
authors.forename: Y
authors.initials: Y
authors.lastname: Kashman
authors.forename: J P
authors.initials: JP
authors.lastname: Springer
authors.forename: M H
authors.initials: MH
authors.lastname: Chen
authors.forename: J
authors.initials: J
authors.lastname: Clardy
authors.forename: G A
authors.initials: GA
authors.lastname: Strobel