Population Genetic Characteristics and Mating Type Frequency of from Pecan in South America.

Scab, caused by the plant-pathogenic fungus , is a major disease of pecan in South America, resulting in loss of quantity and quality of nut yield. Characteristics of the populations of in South America are unknown. We used microsatellites to describe the genetic diversity and population structure of in South America, and determined the mating type status of the pathogen.