INVESTIGADORES
DIB julian rafael
artículos
Título:
Volatile organic compounds of Clavispora lusitaniae AgL21 restrain citrus postharvest pathogens
Autor/es:
PEREYRA, MARTINA MARÍA; GARMENDIA, GABRIELA ; ROSSINI, CARMEN ; MEINHARDT, FRIEDHELM ; VERO, SILVANA; DIB, JULIÁN RAFAEL
Revista:
BIOLOGICAL CONTROL
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: Amsterdam; Año: 2022
ISSN:
1049-9644
Resumen:
Microbial agents exert their biocontrol effects through different mechanisms of action.Clavispora lusitaniae AgL21, a yeast capable of controlling postharvest diseases inlemon, produces volatile organic compounds (VOCs) impairing phytopathogenic fungi.Here we elucidate the nature of such compounds and check individual effects onmycelial growth of citrus fungal pathogens: Penicillium digitatum, Penicillium italicum,and Geotrichum citri-aurantii . VOCs characterization was carried out deploying solidphase microextraction/gas chromatography-mass spectrum techniques. Among thecompounds produced by C. lusitaniae AgL21, ethyl acetate, isoamyl acetate, 3-methyl butanol, and phenethyl alcohol displayed the highest relative abundance.Synthetic ethyl acetate, tested in vitro on P. digitatum , had no discernable effect onmycelial growth, whereas isoamyl acetate and both of the above alcohols exhibitedfungistatic and fungicidal effects, respectively. The data provided in this study prove forthe first time, that VOCs released by C. lusitaniae AgL21 are able to take part inantagonistic activities against citrus postharvest fungal pathogens.
