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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/71125

    Título
    Effective biological control of chickpea rabies (Ascochyta rabiei) through systemic phytochemical defenses activation by Trichoderma roots colonization: From strain characterization to seed coating
    Autor
    Morcuende Herrero, Javier
    Martín García, JorgeAutoridad UVA Orcid
    Velasco, Pablo
    Sánchez Gómez, Tamara
    SantaMaría Becerril, ÓscarAutoridad UVA Orcid
    Rodríguez, Víctor Manuel
    Poveda Arias, JorgeAutoridad UVA Orcid
    Año del Documento
    2024
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Biological Control, 2024, vol. 193, 105530
    Resumen
    Chickpea (Cicer arietinum) is a legume of great economic and agricultural importance worldwide, whose crop is severely affected by rust or Ascochyta blight, caused by the fungus Ascochyta rabiei. The fungal genus Trichoderma includes several species widely characterized as effective biological control agents against crop pathogens. First, this work characterized several species of the genus Trichoderma as potential biological control agents of A. rabiei directly (in vitro confrontation) or indirectly in chickpea plants (activation of systemic resistance), selecting T. harzianum EN1 as the most efficient strain. Subsequently, different materials were tested as coatings to apply the T. harzianum conidia on chickpea seeds, determining that gum arabic at 1 % concentration was the one that most promoted the germination of conidia and seeds. The third phase of the study was based on the application of the coating and T. harzianum conidia on chickpea seeds and to study plant survival after infection with the pathogen A. rabiei, characterizing root colonization by Trichoderma and systemic hormonal and metabolic changes related to the induction of systemic defenses. The treatment of chickpea seeds with gum arabic and T. harzianum conidia was found to increase Trichoderma-root colonization and to improve plant survival. The induction of systemic ethylene- and melatonin-mediated resistance, which led to the accumulation of nicotinic acid in plant tissues, was considered the cause of such a protection. Therefore, T. harzianum applied as seed coating with gum arabic could be a good biological control strategy against A. rabiei on chickpea, due to the induction of systemic resistance.
    Palabras Clave
    Trichoderma harzianum
    Gum arabic
    Root colonization
    Ethylene
    Melatonin
    Nicotinic acid
    Revisión por pares
    SI
    DOI
    10.1016/j.biocontrol.2024.105530
    Patrocinador
    Junta de Castilla y León (POC 067/228491)
    Version del Editor
    https://www.sciencedirect.com/science/article/pii/S1049964424000951
    Propietario de los Derechos
    © 2024 The Author(s)
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/71125
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
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    • DEP57 - Artículos de revista [101]
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