RT info:eu-repo/semantics/article
T1 Biological control of Pseudomonas syringae in tomato using filtrates and extracts produced by Alternaria leptinellae
A1 García Latorre, Carlos
A1 Rodrigo, Sara
A1 Santamaria Becerril, Oscar
K1 Fungi
K1 Endophytes
K1 Biological control systems
K1 Sistemas de control biológico
K1 Plant diseases
K1 Plantas - Enfermedades y plagas
K1 Growth (Plants)
K1 Crecimiento (Plantas)
K1 Metabolites
K1 Sustainable agriculture
K1 Agricultura sostenible
K1 Ecología agrícola
K1 Plant science
K1 Tomato
K1 Tomates -  Cultivo
K1 Horticulture
K1 3108.05 Hongos
K1 31 Ciencias Agrarias
K1 3107 Horticultura
AB Endophytic fungi offer promising alternatives for sustainable plant disease management strategies, often through the production of bioactive secondary metabolites. This study investigated the biocontrol potential of filtrates and extracts, produced under controlled conditions, from Alternaria leptinellae E138 against Pseudomonas syringae in tomato plants under greenhouse conditions. To understand the main mechanisms involved in biocontrol, the direct inhibition of bacterial growth and disruption of quorum sensing activity caused by metabolites were studied in vitro, as well as indirect mechanisms, such as their capacity to produce phytohormone-like substances, nutrient mobilization, and antioxidant activity, which can enhance plant growth and fitness. Moreover, a mass spectrometry analysis was used to tentatively identify the secondary metabolites present in the extract with antimicrobial properties, which could explain the biocontrol effects observed. Mycopriming assays, involving the direct treatment of tomato seeds with the fungal A. leptinellae E138 extracts, produced increased germination rates and seedling vigor in tomato seeds. As another treatment, postemergence application of the extracts in greenhouse conditions significantly improved plant health and resulted in a 41% decrease in disease severity. Overall, this study underscores the potential of A. leptinellae E138 extract as a plant growth promoter with biocontrol capabilities, offering promising avenues for sustainable plant disease management.
PB MDPI
SN 2311-7524
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/67327
UL https://uvadoc.uva.es/handle/10324/67327
LA eng
NO Horticulturae, 2024, Vol. 10, Nº. 4, 334
NO Producción Científica
DS UVaDOC
RD 06-ago-2024