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Volume 14
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10.3390/pathogens14060532
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Article

First Report of Trametes hirsuta, Causal Agent White Rot in Avocado Trees Grown in the State of Michoacán, México

by
Juan Mendoza-Churape
1,
Ma. Blanca Nieves Lara-Chávez
1,
Rosario Ramírez-Mendoza
2,
César Ramiro Martínez-González
3,
Hexon Angel Contreras-Cornejo
4,
Yurixhi Atenea Raya-Montaño
1,
Teresita del Carmen Ávila-Val
1 and
Margarita Vargas-Sandoval
5,*
1
Laboratorio de Fitopatología, Facultad de Agrobiología “Presidente Juárez”, Universidad Michoacana de San Nicolás de Hidalgo, Uruapan 60170, Michoacán, Mexico
2
Colegio de Postgraduados, Km 36.5 Montecillo, Texcoco 56230, Estado de México, Mexico
3
Tecnológico Nacional de México, Instituto Tecnológico de Ciudad Victoria, Ciudad Victoria 87010, Tamaulipas, Mexico
4
Tecnológico Nacional de México, Instituto Tecnológico de Morelia, Morelia 58120, Michoacán, Mexico
5
Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Michoacán, Mexico
*
Author to whom correspondence should be addressed.
Pathogens 2025, 14(6), 532; https://doi.org/10.3390/pathogens14060532
Submission received: 20 April 2025 / Revised: 21 May 2025 / Accepted: 23 May 2025 / Published: 26 May 2025
(This article belongs to the Special Issue An Update on Fungal Infections)
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Abstract

México is the world’s leading producer of avocado, with 2,540,715 tons in the last year. Trametes spp. are macromycete fungi that rot wood. In 2022, in the state of Michoacán, México, sporomas of Trametes sp. were found in the trunks of avocado trees (Persea americana var. Hass) of 10 years old and older. The trees showed disease symptoms including yellowing of leaves, widespread defoliation, and wilting. It was observed that 10% of the infected trees were felled after heavy rains. In the place where the fungus settled, abundant cream-colored and cottony mycelium developed, causing “white rot”. The incidence of the disease in the sampled orchards was 60% in the tree population per hectare with 350 trees. The symptomatic trees studied were randomly selected from seven orchards. The collected fungal samples show typical structures corresponding to Trametes sp., including large sporomas, a pileus with a surface of concentric zones of various ocher tones, and a porous hymenium. The samples showed a 99% match with the species Trametes hirsuta. Laboratory bioassays of inoculation in fresh wood segments of avocado formed typical sporomas of the pathogen. Finally, the fungus was recovered and reisolated in vitro in PDA, and its identity was confirmed through the morphological characteristics and molecular tests. To the best of our knowledge, this article reports for the first time that P. americana cv. Hass and Mendez are new hosts for T. hirsuta. Therefore, the environmental and horticultural management conditions that favor the proliferation of T. hirsuta must be investigated.
Keywords: ITS; pathogenic fungus; Persea americana; polyporales; sporomas; wood decay fungus ITS; pathogenic fungus; Persea americana; polyporales; sporomas; wood decay fungus
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MDPI and ACS Style

Mendoza-Churape, J.; Lara-Chávez, M.B.N.; Ramírez-Mendoza, R.; Martínez-González, C.R.; Contreras-Cornejo, H.A.; Raya-Montaño, Y.A.; Ávila-Val, T.d.C.; Vargas-Sandoval, M. First Report of Trametes hirsuta, Causal Agent White Rot in Avocado Trees Grown in the State of Michoacán, México. Pathogens 2025, 14, 532. https://doi.org/10.3390/pathogens14060532

AMA Style

Mendoza-Churape J, Lara-Chávez MBN, Ramírez-Mendoza R, Martínez-González CR, Contreras-Cornejo HA, Raya-Montaño YA, Ávila-Val TdC, Vargas-Sandoval M. First Report of Trametes hirsuta, Causal Agent White Rot in Avocado Trees Grown in the State of Michoacán, México. Pathogens. 2025; 14(6):532. https://doi.org/10.3390/pathogens14060532

Chicago/Turabian Style

Mendoza-Churape, Juan, Ma. Blanca Nieves Lara-Chávez, Rosario Ramírez-Mendoza, César Ramiro Martínez-González, Hexon Angel Contreras-Cornejo, Yurixhi Atenea Raya-Montaño, Teresita del Carmen Ávila-Val, and Margarita Vargas-Sandoval. 2025. "First Report of Trametes hirsuta, Causal Agent White Rot in Avocado Trees Grown in the State of Michoacán, México" Pathogens 14, no. 6: 532. https://doi.org/10.3390/pathogens14060532

APA Style

Mendoza-Churape, J., Lara-Chávez, M. B. N., Ramírez-Mendoza, R., Martínez-González, C. R., Contreras-Cornejo, H. A., Raya-Montaño, Y. A., Ávila-Val, T. d. C., & Vargas-Sandoval, M. (2025). First Report of Trametes hirsuta, Causal Agent White Rot in Avocado Trees Grown in the State of Michoacán, México. Pathogens, 14(6), 532. https://doi.org/10.3390/pathogens14060532

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