Reclassification of the Main Causal Agent of Glomerella Leaf Spot on Apple into in Southern Brazil and Uruguay.

Glomerella leaf spot (GLS) is one of the most important diseases of apple, affecting a wide range of economically important cultivars, particularly Golden Delicious and its descendants. Caused mainly by species of the species complex (CGSC), has been described as the most prevalent and aggressive species associated with GLS and apple bitter rot (ABR) in Brazil and Uruguay. Recently, new CGSC species, closely related to , have been identified causing ABR.

Genetic Structure of Colletotrichum fructicola Associated to Apple Bitter Rot and Glomerella Leaf Spot in Southern Brazil and Uruguay.

Colletotrichum fructicola is the main species causing apple bitter rot (ABR) and Glomerella leaf spot (GLS) in southern Brazil, and ABR in Uruguay where GLS remains unnoticed. Thus, this work aimed to determine the genetic structure of C. fructicola isolates of both the countries.