Response of Annual and Perennial Teosintes (Zea) to Six Maize Viruses

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Abstract
Teosinte (Zea) species and subspecies were tested for susceptibility to maize dwarf mosaic virus strains A and B, maize chlorotic dwarf virus, maize chlorotic mottle virus, maize stripe virus and maize streak virus. The annual teosintes, Z. mexicana ssp. mexicana and Z. mexicana parviglumis and Z. luxurians, were susceptible to all viruses. The diploid perennial teosinte, Z. diploperennis, was immune to maize chlorotic dwarf, maize chlorotic mottle and maize streak viruses, slightly susceptible to maize dwarf mosaic virus strain B and maize stripe virus, and susceptible to maize dwarf mosaic virus strain A. The tetraploid perennial teosinte Z. perennis was susceptible only to maize stripe virus. Because Z. diploperennis is interfertile with Z. mays, it offers potential for contributing to maize genes for immunity or tolerance to virus diseases.