Phytotoxins from the pathogenic fungi Drechslera maydis and Drechslera sorghicola
- 1 May 1987
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 84 (10) , 3081-3085
- https://doi.org/10.1073/pnas.84.10.3081
Abstract
Drechslera maydis, the causal agent of Southern corn leaf blight, and Drechslera sorghicola, the causal agent of leaf spot on Johnson grass, produce a series of phytotoxic sesterterpenoids. These sesterterpenoids belong to the ophiobolin family. One of them, ophiobolin I, was characterized by x-ray diffraction and served as a crucial reference compound for characterizing four other ophiobolins. All of the ophiobolins studied produce characteristic lesions on host plants at concentrations of 1 mM to 1 .mu.M. The ophiobolin characterized as 6-epiophiobolin A is selectively toxic to corn bearing Texas-male-sterile (Tms) cytoplasm when assayed in a dark CO2 fixation assay. It is plausible that these ophiobolins had a role in the 1970 corn-blight epidemic in North America.This publication has 17 references indexed in Scilit:
- Bipolaroxin, a selective phytotoxin produced by Bipolaris cynodontis.Proceedings of the National Academy of Sciences, 1985
- Mode of Methomyl and Bipolaris maydis (race T) Toxin in Uncoupling Texas Male-Sterile Cytoplasm Corn MitochondriaPlant Physiology, 1985
- Role of Calmodulin Inhibition in the Mode of Action of Ophiobolin APlant Physiology, 1985
- Binding of Butyl Gallate to Isolated Mung Bean MitochondriaPlant Physiology, 1983
- Effects of Ophiobolin A on Ion Leakage and Hexose Uptake by Maize RootsPlant Physiology, 1977
- Serinol as an activator of toxin production in attenuated cultures of Helminthosporium sacchariProceedings of the National Academy of Sciences, 1976
- Isolation and Partial Characterization of Four Host-specific Toxins of Helminthosporium maydis (Race T)Plant Physiology, 1974
- Southern Corn Leaf Blight: Susceptible and Resistant MitochondriaScience, 1971
- The Southern Corn Leaf Blight EpidemicScience, 1971
- The Structure of Ophiobolin, a C25 Terpenoid Having a Novel SkeletonJournal of the American Chemical Society, 1965