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Artigo
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| Avaliação de furanocumarinas como inibidores da fotossíntese através de ensaios de fluorescência da clorofila a Evaluation of furocoumarins as photosynthetic inhibitor by chlorophyll a fluorescence assay |
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Olívia Moreira SampaioI; Maria Fátima das Graças Fernandes da SilvaI; Thiago André Moura VeigaII; Beatriz King-Díaz e Blas Lotina-HennsenIII
IDepartamento de Química, Universidade Federal de São Carlos, CP 676, 13560-970 São Carlos - SP, Brasil The evaluations of Chorophyll a fluorescence emitted by superior plants carry structural information and photosynthetic apparatus function. Quantitative analysis apparatus of fluorescence kinetic were measured by energy flows (ABS), (TR), (ET) and (DI), known as phenomenological phenomena of OJIP test. Four furocoumarins were isolated from Ruta graveolens (Rutaceae), and chorophyll a (Chl a) fluorescence assays were performed with these compounds to evaluate the photosynthesis inhibition potential. This test was realized in spinach's leaf discs and in Lolium perenne leaves. The results indicated the herbicide potential mainly for bergapten and chalepin. Conteúdo não disponível
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