Pseudomonas synxantha volatile organic compounds: efficacy against Cadophora luteo-olivacea and Botrytis cinerea of kiwifruit
Autor/a
Di Francesco, Alessandra
Jabeen, Farwa
Moret, Erica
Martini, Marta
Ermacora, Paolo
Fecha de publicación
2024-05-08ISSN
1664-462X
Resumen
Volatile organic compounds (VOCs) are responsible for the antagonistic activity
exerted by different biological control agents (BCAs). In this study, VOCs
produced by Pseudomonas synxantha strain 117-2b were tested against two
kiwifruit fungal postharvest pathogens: Cadophora luteo-olivacea and Botrytis
cinerea, through in vitro and in vivo assays. In vitro results demonstrated that
P. synxantha 117-2b VOCs inhibit mycelial growth of C. luteo-olivacea and
B. cinerea by 56% and 42.8% after 14 and 5 days of exposition, respectively. In
vivo assay demonstrated significant inhibitory effects. VOCs used as a
biofumigant treatment reduced skin-pitting symptoms disease severity by
28.5% and gray mold incidence by 66.6%, with respect to the untreated
control. BCA volatiles were analyzed by solid-phase microextraction coupled
with gas chromatography–mass spectrometry (SPME–GC/MS), and among the
detected compounds, 1-butanol, 3-methyl and 1-nonene resulted as the most
produced. Their efficacy as pure synthetic compounds was assayed against
mycelial growth of fungal pathogens by different concentrations (0.34, 0.56,
and 1.12 μL mL−1 headspace). The effect of the application of VOCs as a
biofumigant was also investigated as the expression level of seven defenserelated
genes of kiwifruit at different exposition times. The results indicated an
enhancement of the expression of almost all the genes starting from 3 h of
treatment. These results described P. synxantha VOCs characteristics and their
potential as a promising method to adopt for protecting kiwifruit from
postharvest diseases caused by C. luteo-olivacea and B. cinerea.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
English
Materias (CDU)
632 - Enfermedades y protección de las plantas
Páginas
10
Publicado por
Frontiers Media
Publicado en
Frontiers in Plant Science
Citación
Di Francesco, Alessandra, Farwa Jabeen, Núria Vall-Llaura, Erica Moret, Marta Martini, Rosario Torres, Paolo Ermacora, and Neus Teixidó. 2024. “Pseudomonas Synxantha Volatile Organic Compounds: Efficacy Against Cadophora Luteo-olivacea and Botrytis Cinerea of Kiwifruit.” Frontiers in Plant Science 15 (May). https://doi.org/10.3389/fpls.2024.1398014.
Program
Postcollita
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