Melanin Induction Restores the Pathogenicity of Gaeumannomyces graminis var. tritici in Wheat Plants
| Primer Autor |
Duran, Paola
|
| Co-autores |
Aranda, Camila
Mendez, Isabel
Barra, Patricio Javier
Hernandez-Montiel, Luis
Fallard, Ana
Tortella, Gonzalo
Briones, Evelyn
|
| Título |
Melanin Induction Restores the Pathogenicity of Gaeumannomyces graminis var. tritici in Wheat Plants
|
| Editorial |
MDPI
|
| Revista |
JOURNAL OF FUNGI
|
| Lenguaje |
en
|
| Resumen |
One of the most challenging aspects of long-term research based on microorganisms is the maintenance of isolates under ex situ conditions, particularly the conservation of phytopathological characteristics. Our research group has worked for more than 10 years with Gaumannomyces graminis var. tritici (Ggt), the main biotic factor affecting wheat. In this sense we preserved the microorganisms in oil overlaid. However, several strains preserved for a long time lost their pathogenicity. These strains show white and non-infective mycelia. In this sense, we hypothesized that this is attributable to low melanin content. Melanin is a natural pigment mainly involved in UV protection, desiccation, salinity, oxidation, and fungal pathogenicity. Therefore, understanding the melanin role on Ggt pathogenicity is fundamental to developing melanin activation strategies under laboratory studies. In this study, we induce melanin activation by UV-A light chamber, 320 to 400 nm (T1) and temperature changes of 30 degrees C, 15 degrees C, and 20 degrees C (T2). Fungal pathogenicity was evaluated by determination of blackening roots and Ggt was quantified by real-time PCR in inoculated wheat plants. Results revealed that Ggt grown under UV-A (T1) conditions showed around 40% higher melanin level with a concomitant effect on root infection (98% of blackened roots) and 4-fold more Ggt genome copy number compared with the control (non-infective mycelia) being T1, a more inductor factor compared with T2. These findings would support the role of melanin in pathogenicity in darkly pigmented fungi such as Ggt and could serve as a basis for activating pathogenicity under laboratory conditions.
|
| Fecha Publicación |
2023
|
| Tipo de Recurso |
artículo original
|
| doi |
10.3390/jof9030350
|
| Formato Recurso |
PDF
|
| Palabras Claves |
take-all disease
melanin
UV
vis spectrum
|
| Ubicación del archivo | |
| Categoría OCDE |
Microbiología
Micología
|
| Materias |
enfermedad take.all
melanina
rayos ultravioleta
frente al espectro
|
| Identificador del recurso (Mandatado-único) |
artículo original
|
| Versión del recurso (Recomendado-único) |
versión publicada
|
| License |
CC BY 4.0
|
| Condición de la licencia (Recomendado-repetible) |
CC BY 4.0
|
| Derechos de acceso |
acceso abierto
|
| Access Rights |
acceso abierto
|
| Id de Web of Science |
WOS:000956172000001
|
| Tipo de ruta |
verde# dorado
|
| Categoría WOS |
Microbiología
Micología
|
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