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New Races of Hemileia vastatrix Detected in Peruvian Coffee Fields
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Orientador(es)
Resumo(s)
Coffee leaf rust (CLR), a fungal disease caused by Hemileia vastatrix, represents Peru’s most
significant threat to coffee production. The CLR epidemic (2012–2013) led Peru to implement an
emergency plan under which coffee plantations underwent renewal using rust-resistant varieties
derived from a Timor hybrid (HDT; Coffea arabica × canephora hybrid) like Catimors. Nevertheless,
new pathogenic rust races capable of infecting these varieties have been recorded. Eighteen rust
samples from coffee genotypes, such as Caturra, Typica, and Catimor, were collected in various Peru-
vian regions and sent to CIFC/ISA/UL (Centro de Investigação das Ferrugens do Cafeeiro/Instituto
Superior de Agronomia/Universidade de Lisboa) in Portugal for race characterization. Assessing
the virulence spectra of rust samples on a set of 27 coffee differentials resulted in the identification
of 5 known and 2 new races. This study emphasizes the significance of conducting surveys on the
diversity of H. vastatrix races in Peru for effective disease management. Moreover, Catimor lines,
widely cultivated in coffee-growing countries, are susceptible to the 2 new races and to races XXXIV
and XXXV identified in this study. Thus, coffee farmers need to know the resistance spectrum of new
varieties before introducing them to CLR-affected regions
Descrição
Palavras-chave
coffee leaf rust disease development physiological races virulence genes
Contexto Educativo
Citação
Julca-Otiniano, A.; Alvarado-Huamán, L.; Castro-Cepero, V.; Borjas-Ventura, R.; Gómez-Pando, L.; Pereira, A.P.; Nielen, S.; Ingelbrecht, I.; Silva, M.d.C.; Várzea, V. New Races of Hemileia vastatrix Detected in Peruvian Coffee Fields. Agronomy 2024, 14, 1811. https://doi.org/10.3390/agronomy14081811
Editora
MDPI