Difference between isolates from brown eye spot and black spot lesions in coffee plants

Abstract

Abstract: The objective of this work was to evaluate the difference between the isolates from two cercospora leaf spot symptoms (brown eye spot and black spot) in relation to conidial morphology, mycelial growth, cercosporin production, and reproduction of symptoms in coffee leaves collected in three municipalities in the state of Minas Gerais, Brazil. There was a difference between the isolates for the studied variables, but without any relation to the type of symptom. The differences found were not associated with the origin of the isolates. The symptoms characterized as black spot were associated with different host conditions during the infection process.

Keywords

• Cercospora coffeicola
• Coffea arabica
• cercosporin production
• conidial morphology
• mycelial growth
• reproduction of symptoms