Diversidad genética de Hemileia vastatrix de dos Zonas productoras de café en el Perú

Quispe-Apaza, Cinthia; Mansilla, Roberto; LÃ3pez-Bonilla, CÃ©sar Fernando; Espejo, Rosa; Villanueva-Caceda, Juan; MonzÃ3n, Criss

doi:10.18781/r.mex.fit.1612-7

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…The findings derived from the phylogenetic analysis indicate that the six specimens of the H. vastatrix population exhibit a lack of structure, indicating a homogenous population with no discernible differentiation based on geographic origin. The undifferentiated H. vastatrix population could have evolved from the movement of spores between the two areas transported by people, seed, and/or infected plants [40]. These findings are consistent with those obtained in Brazil by Cabral et al [41], who found no evidence of H. vastatrix populations being structured based on origin, host, or physiological race.…”

Section: Discussionsupporting

confidence: 90%

First Occurrence of Coffee Leaf Rust Caused by Hemileia vastatrix on Coffee in Saudi Arabia

Alhudaib,

Ismail

2024

Microbiology Research

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Coffee leaf rust (CLR) is a major disease of Arabica coffee caused by the biotrophic fungus Hemileia vastatrix. Jazan region in Saudi Arabia has long been one of the last coffee-producing regions in the world free of this disease. In August 2023, CLR was initially observed in coffee plantations located in Fyfa district one of the main coffee-producing mountains of Jazan region. The source of the infection is unknown, however CLR could have entered Jazan from the nearest coffee-producing locations that haven the pathogen. During a scheduled survey in August 2023, symptoms were observed including yellowish-orange lesions that frequently combined to form chlorotic lesions and exhibited the powdery appearance of yellow uredospores on the abaxial surface of leaves. The uredospores and teliospores were microscopically examined and their morphology matched the previously published description for H. vastatrix. The identity of H. vastatrix specimens was further confirmed based on PCR amplification and sequencing of ITS, sharing a 99–100% identity with previously published sequences, as belonging to H. vastatrix. The pathogenicity of H. vastatrix specimens was investigated on Coffee arabica plants under growth chamber conditions, and all were pathogenic relative to control, with 100% of disease incidence, therefore fulfilling Koch’s postulates. Based on our findings, this is the first documentation of H. vastatrix causing CLR in Saudi Arabia.

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Section: Discussionsupporting

confidence: 90%

First Occurrence of Coffee Leaf Rust Caused by Hemileia vastatrix on Coffee in Saudi Arabia

Alhudaib,

Ismail

2024

Microbiology Research

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“…H. vastatrix has considerable genetic variation, with more than 50 races that have been identified (Quispe‐Apaza et al., 2017). Races are distinguished by unique sets of virulence genes (Talhinhas et al., 2017; Zambolim, 2016).…”

Section: Why Were Outbreaks Of Clr So Severe In the Americas?mentioning

confidence: 99%

The coffee leaf rust pandemic: An ever‐present danger to coffee production

Koutouleas,

Collinge,

Boa

2023

Plant Pathology

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Coffee leaf rust (CLR) is caused by the biotrophic pathogenic fungus Hemileia vastatrix. Despite being the most researched coffee disease, mysteries still exist relating to its epidemiology and biology. The objective of this work is to highlight past and present events concerning this prominent coffee disease. We start with an historical overview of the homeland of Coffea arabica, the Afromontane forest of south‐west Ethiopia, and then follow its journey across the globe linked to colonial trade and power struggles. We report the relevance of CLR to coffee production today, with a focus on the Americas and summarize unproven hypotheses in relation to the cause of recent epidemics. We present an original hypothesis concerning the first major outbreak occurring in 1869 in Ceylon (Sri Lanka), based on geopolitical connections to global trade. We review old and new options for management of the disease. The likelihood of a yet undetected alternate host of H. vastatrix is also considered as an additional piece of the epidemiological puzzle. Finally, we reflect on the interactions between H. vastatrix and a changing climate. By better understanding past events, linked to CLR, we may be better prepared for future outbreaks.

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“…Finalmente, se ha encontrado en mayor cantidad especies de Hemileia vastatrix, en todas las zonas muestreadas, con baja incidencia de daño. No cabe duda que, H. vastatrix es patógeno con mayor ataque en plantas de café y además que posse una amplia variabilidad genetica (Malau, 2019;Quispe-Apaza et al, 2017;Talhinhas et al, 2017).…”

Section: Microconiosunclassified

Caracterización morfológica de hongos asociados al agroecosistema café (<i>Coffea arabica L.</i>), en el estado de Tabasco, México

Huamán Pilco,

Torres de la Cruz,

Ramírez Ramírez

et al. 2023

Pakamuros

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El objetivo del trabajo fue identificar a nivel morfológico los hongos asociados al agroecosistema café (Coffea arabica L.), en el estado de Tabasco, México. En campo se seleccionaron al azar 6 plantas de café y se colectaron muestras de hojas tallos y frutos con síntomas visuales atribuidos a hongos. En laboratorio se realizaron aislamientos en medio PDA a partir del tejido enfermo y se obtuvieron cepas puras. Para la caracterización morfológica a nivel de género se emplearon claves especializas (forma, color y tamaño). En total se obtuvieron 47 aislamientos, los cuales fueron distribuidos por órganos de la planta: en hojas hubo 22 aislados con afinidad morfológica con Colletotrichum gloesporoides, tres con Colletotrichum theobromicola, uno con Pestalotiopsis sp, tres con Paramyrothecium roridum, uno con Phomopsis sp, dos Hemileia vastatrix y dos con Marasmius sp; en el cuello de la planta se encontró un Fusarium sp; en el tallo Lasiodiplodia sp y un Colletotrichum gigasporum; en frutos se reportó nueve aislados de Fusarium sp. Se identificaron 11 especies de hongos, asociados al patosistema Coffea arabica L., en sus diversos órganos; de éstos, 10 están reportadas como fitopatógenos este cultivo y uno como patógeno de Theobroma cacao L.

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Diversidad genética de Hemileia vastatrix de dos Zonas productoras de café en el Perú

Cited by 7 publications

References 11 publications

First Occurrence of Coffee Leaf Rust Caused by Hemileia vastatrix on Coffee in Saudi Arabia

First Occurrence of Coffee Leaf Rust Caused by Hemileia vastatrix on Coffee in Saudi Arabia

The coffee leaf rust pandemic: An ever‐present danger to coffee production

Caracterización morfológica de hongos asociados al agroecosistema café (<i>Coffea arabica L.</i>), en el estado de Tabasco, México

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