Early Detection of Fusarium Basal Rot Infection in Onions and Shallots Based on VOC Profiles Analysis.
J Agric Food Chem
; 72(7): 3664-3672, 2024 Feb 21.
Article
en En
| MEDLINE
| ID: mdl-38320984
ABSTRACT
Gas chromatography ion-mobility spectrometry (GC-IMS) technology is drawing increasing attention due to its high sensitivity, low drift, and capability for the identification of compounds. The noninvasive detection of plant pests and pathogens is an application area well suited to this technology. In this work, we employed GC-IMS technology for early detection of Fusarium basal rot in brown onion, red onion, and shallot bulbs and for tracking disease progression during storage. The volatile profiles of the infected and healthy control bulbs were characterized using GC-IMS and gas chromatography-time-of-flight mass spectrometry (GC-TOF-MS). GC-IMS data combined with principal component analysis and supervised methods provided discrimination between infected and healthy control bulbs as early as 1 day after incubation with the pathogen, classification regarding the proportion of infected to healthy bulbs in a sample, and prediction of the infection's duration with an average R2 = 0.92. Furthermore, GC-TOF-MS revealed several compounds, mostly sulfides and disulfides, that could be uniquely related to Fusarium basal rot infection.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Chalotes
/
Compuestos Orgánicos Volátiles
/
Fusarium
Tipo de estudio:
Diagnostic_studies
/
Screening_studies
Idioma:
En
Revista:
J Agric Food Chem
Año:
2024
Tipo del documento:
Article