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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/127731
Título

Citrus phenylpropanoids and defence against pathogens. Part II: Gene expression and metabolite accumulation in the response of fruits to Penicillium digitatum infection

AutorBallester Frutos, Ana Rosa ; Lafuente, María Teresa ; González-Candelas, Luis
Palabras claveScoparone
Albedo
Polymethoxylated flavones
Citrus sinensis
Phenylpropanoids
Penicillium digitatum
Oranges
Metabolic profiling
Infection
Defense
Flavedo
Gene expression
Fecha de publicación2013
EditorElsevier
CitaciónFood Chemistry 136: 385- 391 (2013)
ResumenThe effect of infection of Citrus sinensis (var. Navelina) fruits with Penicillium digitatum was studied at gene expression and metabolite levels. In this study, expression of genes involved in the phenylpropanoid pathway was studied in the flavedo (outer coloured part of the peel) and albedo (inner white part) in response to pathogen infection. Results of the time-course experiment showed that maximal expression of 10 out of 17 phenylpropanoid genes analysed occurred at 48 h post-inoculation, when decay symptoms started to appear, and mRNA levels either kept constant or decreased after 72 h post-inoculation. To further investigate the putative involvement of the phenylpropanoid pathway in the defence of citrus fruit, changes in the metabolic profile of both tissues infected with P. digitatum was studied by means of HPLC-PDA-FD. Metabolite accumulation levels along the time course suggest that flavanones, flavones, polymethoxylated flavones and scoparone are induced in citrus fruit in response to P. digitatum infection, although with different trends depending on the tissue.
URIhttp://hdl.handle.net/10261/127731
DOI10.1016/j.foodchem.2012.08.006
Identificadoresdoi: 10.1016/j.foodchem.2012.08.006
issn: 0308-8146
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