VIEW ARTICLE

Leakage from Corn Tissues Induced by Helminthosporium maydis Race T Toxin. J. M. Halloin, Department of Biochemistry and Biophysics, Iowa State University, Ames, Iowa 50010, Present address: National Cotton Pathology Research Laboratory, P. O. Drawer JF, College Station, Texas 77840; J. C. Comstock(2), C. A. Martinson(3), and C. L. Tipton(4). (2)(3)Department of Botany and Plant Pathology, Iowa State University, Ames, Iowa 50010; (4)Department of Biochemistry and Biophysics, Iowa State University, Ames, Iowa 50010. Phytopathology 63:640-642. Accepted for publication 11 December 1972. DOI: 10.1094/Phyto-63-640.

Toxin produced by Helminthosporium maydis race T is host-specific in increasing leakage of electrolytes, but non-host-specific in increasing leakage of carbohydrates from root and leaf tissue of corn. The observed rate of leakage is dependent upon temperature and time of exposure to toxin. The toxin preparation contains at least three active components.