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Title

Carotenogenic gene expression and carotenoid accumulation in three varieties of Cucurbita pepo during fruit development

AuthorsObrero, Ángeles; González-Verdejo, Clara Isabel; Die, José V. ; Gómez Jiménez de Cisneros, Pedro; Río Celestino, Mercedes del ; Román, Belén
Issue DateJun-2013
PublisherAmerican Chemical Society
CitationJournal of Agricultural and Food Chemistry 61(26): 6393-6403 (2013)
AbstractThe control of gene expression is a crucial regulatory mechanism in carotenoid accumulation of fruits and flowers. We investigated the role of transcriptional regulation of nine genes involved in the carotenoid biosynthesis pathway in three varieties of Cucurbita pepo with evident differences in fruit color. The transcriptional levels of the key genes involved in the carotenoid biosynthesis were higher in flower-, leaf-, and fruit skin tissues than flesh tissues. This correlated with higher concentration of carotenoid content in these tissues. The differential expression among the colored and white cultivars detected for some genes, such as LCYe, in combination with other regulatory mechanisms, could explain the large differences found in terms of carotenoid content among the three varieties. These results are a first step to elucidate carotenogenesis in C. pepo and demonstrate that, in general, regulation of the pathway genes is a critical factor that determines the accumulation of these compounds. © 2013 American Chemical Society.
URIhttp://hdl.handle.net/10261/84778
DOI10.1021/jf4004576
Identifiersdoi: 10.1021/jf4004576
issn: 0021-8561
e-issn: 1520-5118
Appears in Collections:(IAS) Artículos
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