Biological Process Development Facility

 

Date of this Version

1982

Document Type

Article

Citation

Plant Disease 66 (1982), pp. 76-79.

Comments

Copyright 1982 American Phytopathological Society

Abstract

Bacterial mosaic is a foliar disease of wheat; characteristic symptoms are small yellow lesions, more or less uniformly distributed over the leaf. It was discovered in Nebraska in the spring of 1976. By 1979, the pathogen was distributed over an 800-km range and had been isolated from 16 cultivars of winter wheat. The pathogen is Corynebacterium michiganense subsp. tessellarius, a Gram-positive coryneform. Wheat was the only host that showed symptoms after inoculation. The pathogen reached high population levels (> 10' colony-forming units per gram of fresh weight) without apparent symptoms in tomato and in six of nine gramineous plants in greenhouse tests.