Identification of race XXXIII of Hemileia vastatrix on Coffea arabica Catimor derivatives in Brazil

Abstract

In this study, a survey of physiological races of H. vastatrix was carried out on 64 coffee leaf rust samples from genotypes of Coffea arabica, C. canephora and Híbrido de Timor/Icatu derivatives that are cultivated in Brazil's main production areas. Based on the infection pattern in a series of differentiating coffee tree clones, the races I, II, III and XXXIII were characterised. The H. vastatrix race XXXIII, reported here for the first time, was associated under field conditions with infection of Catimor derivatives, which are generally considered resistant to coffee leaf rust.

High throughput transcriptome analysis of coffee reveals prehaustorial resistance in response to Hemileia vastatrix infection

“…Until 2005, more than 50 races of H. vastatrix had been broadly described worldwide (Várzea and Marques 2005;Zambolim 2016), in Brazil 15 races were identified: I, II, III, VII, X, XIII, XV, XVI, XVII, XXI, XXII, XXIII, XXIV, XXV or XXXI, and XXXVII (Cabral et al 2009;Capucho et al 2012). The H. vastatrix races recently discovered have been able to infect derivatives of Híbrido de Timor (HdT), a natural hybrid originated from C. arabica and C. canephora crossing (Bettencourt 1973;Rodrigues et al 2004).…”

“…Caturra (CIFC 19/1) and HdT (CIFC 832/1) and released as an important rust resistant cultivar (Pereira et al 2000). Twelve years after its release, the resistance was broken by race XXXIII of H. vastatrix (Capucho et al 2012). Thus, to study the dynamics of the interaction between the pathogen and the plant through transcriptome profiling will help to understand the supplanting of plant resistance by new physiological races of the fungus.…”

Current status and management of coffee leaf rust in Brazil

“…More than 50 races of H. vastatrix have been identified in the Coffee Rust Research Centre in Oeiras, Portugal (Varzea and Marques 2005). In Brazil, 15 of those races have been identified in Coffea arabica L.: I (v2v5) , II (v5) , III (v1v5) , VII (v3v5) , X (v1v4v5) , XIII (v5v7) , XV (v4v5) , XVI (v1v2v3v4v5) , XVII (v1v2v5) , XXII (v5v6) , XXIII (v1v2v4v5) , XXIV (v2v4v5) , XXV (v2v5v6) , XXXIII (v5v7 or v5v7v9) and XXXVII (v2v5v6v7v9) , with race II (v5) being the most prevalent (Chaves and Pereira 1980;Cardoso et al 1986Cardoso et al , 1988Zambolim et al 2005a;Fazuoli et al 2005;Cabral et al 2009;Capucho et al 2012). In Coffea canephora var.…”

Inheritance study and linkage mapping of resistance loci to Hemileia vastatrix in Híbrido de Timor UFV 443-03

“…Races I and II were collected from commercial fields of Catuaí Vermelho and the pathotype 001 from Oeiras cultivar. Races I and II were characterized in a series of differentiating coffee clones, as described by Capucho et al (2012). The pathotype 001 breaks down the resistance of Oeiras (HDT CIFC 832/1×Caturra CIFC 19/1) released as a rust-resistant cultivar.…”