[PMID]: | 28009887 |
[Au] Autor: | Constantino LF; Nascimento LB; Casanova LM; Moreira ND; Menezes EA; Esteves RL; Costa SS; Tavares ES |
[Ad] Endereço: | Instituto de Biologia, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil. elianast@gmail.com. |
[Ti] Título: | Responses of Crepis japonica induced by supplemental blue light and UV-A radiation. |
[So] Source: | Photochem Photobiol Sci;16(2):238-245, 2017 02 15. |
[Is] ISSN: | 1474-9092 |
[Cp] País de publicação: | England |
[La] Idioma: | eng |
[Ab] Resumo: | Crepis japonica (L.) D.C. (Asteraceae), a weed with antioxidant, antiallergenic, antiviral and antitumor properties displays both medicinal properties and nutritional value. This study aims to assess the effects of a supplementation of blue light and UV-A radiation on the growth, leaf anatomical structure and phenolic profile of the aerial parts of Crepis japonica. Plants were grown under two light treatments: W (control - white light), W + B (white light supplemented with blue light) and W + UV-A (white light supplemented with UV-A radiation). We recorded the length, width, and weight of fresh and dry leaves, the thickness of the epidermis and mesophyll, and stomata density. The phenolic profiles of the aqueous extracts of the aerial parts were analyzed by HPLC-DAD. There was an increase in the leaf size, stomatal density, and phenolic production, and a thickening of the mesophyll and epidermis. UV-A radiation increased the phenolic production more than blue light. Blue light and UV-A radiation both improved the production of caffeic acid by about 6 and 3 times, respectively, in comparison to control. This compound was first reported as a constituent of the extract from the aerial parts together with caftaric acid. UV-A also promoted the production of chlorogenic acid (about 1.5 times in comparison to the control). We observed that the morphological and chemical parameters of C. japonica are modified in response to blue light and UV-A radiation, which can be used as tools in the cultivation of this species in order to improve its medicinal properties and nutritional value. |
[Mh] Termos MeSH primário: |
Crepis/efeitos da radiação Luz Raios Ultravioleta
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[Mh] Termos MeSH secundário: |
Ácido Clorogênico/química Ácido Clorogênico/isolamento & purificação Ácido Clorogênico/metabolismo Cromatografia Líquida de Alta Pressão Crepis/química Crepis/metabolismo Fenóis/química Fenóis/isolamento & purificação Fenóis/metabolismo Componentes Aéreos da Planta/química Componentes Aéreos da Planta/metabolismo Extratos Vegetais/análise Extratos Vegetais/química Folhas de Planta/química Folhas de Planta/metabolismo Folhas de Planta/efeitos da radiação
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[Pt] Tipo de publicação: | JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T |
[Nm] Nome de substância:
| 0 (Phenols); 0 (Plant Extracts); 318ADP12RI (Chlorogenic Acid); WCV7W3174L (caftaric acid) |
[Em] Mês de entrada: | 1710 |
[Cu] Atualização por classe: | 171116 |
[Lr] Data última revisão:
| 171116 |
[Sb] Subgrupo de revista: | IM |
[Da] Data de entrada para processamento: | 161224 |
[St] Status: | MEDLINE |
[do] DOI: | 10.1039/c6pp00343e |
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