VIEW ARTICLE

Vergosin and Hemigossypol, Antifungal Compounds Produced in Cotton Plants Inoculated with Verticillium albo-atrum. A. I. Zaki, Research Associate, Department of Plant Pathology, University of California, Riverside 92502; N. T. Keen(2), J. J. Sims(3), and D. C. Erwin(4). (2)(3)(4)Associate Professor, Associate Professor, and Professor, respectively, Department of Plant Pathology, University of California, Riverside 92502. Phytopathology 62:1398-1401. Accepted for publication 14 June 1972. DOI: 10.1094/Phyto-62-1398.

The chemical structures of two antifungal compounds formed in the stele of cotton stems in response to inoculation with Verticillium albo-atrum have been determined as 8-carboxaldehyde, 1-hydroxy, 5-isopropyl, 7-methoxy, 3-methyl naphthalene, and 8-carboxaldehyde, 1,6,7-trihydroxy, 5-isopropyl, 3-methyl naphthalene. The compounds have been assigned the trivial names “vergosin” and “hemigossypol”, respectively, and are structurally related to the cottonseed naphthaldehyde, gossypol.