Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10400.1/1860
Título: | Effect of photoperiod on flavonoid pathway activity in sweet potato (Ipomoea batatas (L.) Lam.) leaves |
Autor: | Carvalho, Isabel Saraiva de Cavaco, Teresa Carvalho, Lara M. Duque, Paula |
Palavras-chave: | Anthocyanins Catechins Flavonoid pathway Flavonols HPLC Hydroxycinnamic acids Hydroxybenzoic acids Photoperiod RT-PCR Sweet potato Gene expression |
Data: | Jan-2010 |
Editora: | Elsevier |
Resumo: | Compared with those of major commercial leafy vegetables, leaves of sweet potato have higher contents of flavonoids and phenolic acids, which provide significant health benefits and may be used as natural colourants. We have analysed the expression of key flavonoid biosynthesis genes using RT-PCR and the accumulation of polyphenolic compounds using high-performance liquid chromatography coupled to a photodiode-array detector, during the development of leaves of sweet potato plants growing under either long day or short day photoperiods. A massive induction of flavonoid pathway gene expression, correlating with a dramatic increase in the content of an anthocyanin, catechins, flavonols, hydroxycinnamic acids and hydroxybenzoic acids, was observed during sweet potato leaf exposure to a long day photoperiod. These results provide further support for the protective role of flavonoids and phenolic acids against enhanced light exposure in plants. |
Peer review: | yes |
URI: | http://hdl.handle.net/10400.1/1860 |
DOI: | http://dx.doi.org/10.1016/j.foodchem.2009.05.005 |
Versão do Editor: | http://dx.doi.org/10.1016/j.foodchem.2009.05.005 |
Aparece nas colecções: | FCT2-Artigos (em revistas ou actas indexadas) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Effect of photoperiod on flavonoid pathway activity in sweet potato (Ipomoea batatas (L.) Lam.) leaves.pdf | 533,53 kB | Adobe PDF | Ver/Abrir Acesso Restrito. Solicitar cópia ao autor! |
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.