1997
DOI: 10.1016/s0031-9422(97)00183-0
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Increases in surface flavonols and photosynthetic pigments in Gnaphalium luteo-album in response to UV-B radiation

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Cited by 75 publications
(47 citation statements)
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“…Chlorophyll a, b, and chlorophyll a/b ratios were quite distinct in different UV studies and this heterogeneity probably reflects species and cultivars differences (Teramura, 1983). Previous study also suggested that these compounds did not appear to correspond to morphological patterns (Cuadra et al, 1997).…”
Section: Effect Of Uv-b Radiation and Mf-pretreatment On The Photosynmentioning
confidence: 92%
“…Chlorophyll a, b, and chlorophyll a/b ratios were quite distinct in different UV studies and this heterogeneity probably reflects species and cultivars differences (Teramura, 1983). Previous study also suggested that these compounds did not appear to correspond to morphological patterns (Cuadra et al, 1997).…”
Section: Effect Of Uv-b Radiation and Mf-pretreatment On The Photosynmentioning
confidence: 92%
“…Existe uma correlação positiva bem estabelecida entre intensidade de radiação solar e produção de compostos fenólicos 101 , tais como flavonóides 99,103,104 , taninos 94,105 e antocianinas 18,106,107 . Isso pode ser explicado, principalmente no caso de flavonóides e fenilpropanóides correlatos, pela proteção contra a foto-destruição proporcionada por estes metabólitos ao absorver e/ou dissipar a energia solar, dificultando assim a danificação dos tecidos mais internos pela radiação UV-B 101,[108][109][110] .…”
Section: Radiação Ultravioletaunclassified
“…The presence of flavonoids in this species is in agreement with previous reports from other genera in the Calophylleae tribe as Caraipa (Silveira et al, 2010), Mesua (Banerji & Chowdhury, 1993) and Calophyllum (Cechinel et al, 2009). It is known that temperature and UV radiation can up-regulate key genes (Christie & Jenkins, 1996) that give plants the ability to offset the excessive absorption of UV radiation by accumulating UV-filtering secondary metabolites such as flavonoids (Cuadra et al, 1997). The chemotaxonomic applicability of phenolic compounds from Kielmeyera genus as markers needs to be properly evaluated, considering more members of the genus, their distribution and environmental influence.…”
Section: Resultsmentioning
confidence: 99%