Powdery mildew of oak (Quercus robur) caused by Erysiphe alphitoides in the Northwest of Argentina

The common oak, although infrequently, can be found as urban trees in the cities of northwestern Argentina. Between late 2023 and early 2024, leaves of Quercus robur exhibiting typical symptoms of powdery mildew were collected from three provinces in this region. Based on its morphological characte...

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Main Authors: Martín A. Ibiris, Lucas A. Castillo, Guillermo M. Suarez
Format: Article
Language:Spanish
Published: Fundación Miguel Lillo 2025-07-01
Series:Lilloa
Subjects:
Online Access:https://www.lillo.org.ar/journals/index.php/lilloa/article/view/2023
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author Martín A. Ibiris
Lucas A. Castillo
Guillermo M. Suarez
author_facet Martín A. Ibiris
Lucas A. Castillo
Guillermo M. Suarez
author_sort Martín A. Ibiris
collection DOAJ
description The common oak, although infrequently, can be found as urban trees in the cities of northwestern Argentina. Between late 2023 and early 2024, leaves of Quercus robur exhibiting typical symptoms of powdery mildew were collected from three provinces in this region. Based on its morphological characteristics, host specificity, and the available descriptions, the fungus was identified as Erysiphe alphitoides in the asexual phase. This represents the first report of this fungus in northwestern Argentina. The symptoms of the disease, as well as the morphological characteristics of the anamorph are described and illustrated.
format Article
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institution DOAJ
issn 2346-9641
language Spanish
publishDate 2025-07-01
publisher Fundación Miguel Lillo
record_format Article
series Lilloa
spelling doaj-art-8271684b38da4104ba9f751f1fb4e8742025-08-20T02:43:55ZspaFundación Miguel LilloLilloa2346-96412025-07-0161s210.30550/j.lil/2023Powdery mildew of oak (Quercus robur) caused by Erysiphe alphitoides in the Northwest of ArgentinaMartín A. Ibiris0Lucas A. Castillo1Guillermo M. Suarez2Universidad Nacional de Tucumán, Facultad de Ciencias Naturales e Instituto Miguel Lillo. Tucumán, Argentina. Universidad Nacional de Tucumán, Facultad de Ciencias Naturales e Instituto Miguel Lillo. Tucumán, Argentina. Universidad Nacional de Tucumán, Facultad de Ciencias Naturales e Instituto Miguel Lillo. Tucumán, Argentina. Unidad Ejecutora Lillo (CONICET – Fundación Miguel Lillo). The common oak, although infrequently, can be found as urban trees in the cities of northwestern Argentina. Between late 2023 and early 2024, leaves of Quercus robur exhibiting typical symptoms of powdery mildew were collected from three provinces in this region. Based on its morphological characteristics, host specificity, and the available descriptions, the fungus was identified as Erysiphe alphitoides in the asexual phase. This represents the first report of this fungus in northwestern Argentina. The symptoms of the disease, as well as the morphological characteristics of the anamorph are described and illustrated. https://www.lillo.org.ar/journals/index.php/lilloa/article/view/2023Anamorphbiological controlErysiphaceaeErysiphehyperparasiteQuercus
spellingShingle Martín A. Ibiris
Lucas A. Castillo
Guillermo M. Suarez
Powdery mildew of oak (Quercus robur) caused by Erysiphe alphitoides in the Northwest of Argentina
Lilloa
Anamorph
biological control
Erysiphaceae
Erysiphe
hyperparasite
Quercus
title Powdery mildew of oak (Quercus robur) caused by Erysiphe alphitoides in the Northwest of Argentina
title_full Powdery mildew of oak (Quercus robur) caused by Erysiphe alphitoides in the Northwest of Argentina
title_fullStr Powdery mildew of oak (Quercus robur) caused by Erysiphe alphitoides in the Northwest of Argentina
title_full_unstemmed Powdery mildew of oak (Quercus robur) caused by Erysiphe alphitoides in the Northwest of Argentina
title_short Powdery mildew of oak (Quercus robur) caused by Erysiphe alphitoides in the Northwest of Argentina
title_sort powdery mildew of oak quercus robur caused by erysiphe alphitoides in the northwest of argentina
topic Anamorph
biological control
Erysiphaceae
Erysiphe
hyperparasite
Quercus
url https://www.lillo.org.ar/journals/index.php/lilloa/article/view/2023
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AT guillermomsuarez powderymildewofoakquercusroburcausedbyerysiphealphitoidesinthenorthwestofargentina