VIEW ARTICLE

Physiology and Biochemistry

Comparison and Characterization of Toxin Produced by Helminthosporium sacchari from Australia, Florida, and Hawaii. Gary W. Steiner, Associate Pathologist, Genetics and Pathology Department, Experiment Station, Hawaiian Sugar Planters' Association, Aiea, 96701; Ralph S. Byther, Associate Pathologist, Genetics and Pathology, Department, Experiment Station, Hawaiian Sugar Planters' Association, Aiea, 96701, Present address of junior author: West Washington Research and Extension Center, Puyallup 98371. Phytopathology 66:423-425. Accepted for publication 30 September 1975. DOI: 10.1094/Phyto-66-423.

Culture filtrate of Helminthosporium sacchari was obtained from several different sugarcane areas in the world. Samples from Florida and Australia contained a host-specific toxin. Studies involving column, paper, and thin-layer chromotography and host ranges, were conducted with the toxin samples and compared to the host-specific toxin produced in Hawaii by H. sacchari. Results indicate that the toxic material in the samples was helminthosporoside.