Light quality affects flavonoid biosynthesis in young berries of Cabernet Sauvignon grape

Variation in growth, photosynthesis and water-soluble polysaccharide of Cyclocarya paliurus under different light regimes

“…For example, leaf camptothecin concentrations in C. acuminata display a significantly increase under blue light and 50% shading treatments , Hu et al 2016. Visible light had been reported to induce proanthocyanidin biosynthesis and affect their composition, whereas UV light specifically induced biosynthesis of flavonols (Koyama et al 2012). In our previous studies, flavonoids production in C. paliurus plantations had been demonstrated to significantly positively correlate with total solar radiation .…”

Accumulation Pattern of Flavonoids in Cabernet Sauvignon Grapes Grown in a Low-Latitude and High-Altitude Region

“…Flavonoids are composed mainly of three subgroups: anthocyanins, flavonols and flavan-3-ols, of which anthocyanins and flavonols are critical components contributing to the quality of red grapes and wines. These two groups of compounds exist predominantly in the skins of red grapes, whereas flavan-3-ols are present in both the seeds and skins of the grape berry (Koyama et al, 2012;Zarrouk et al, 2012). Anthocyanins in Vitis vinifera cultivars consist of five aglycones: cyanidin, delphinidin, peonidin, petunidin and malvidin, almost all of which are in the form of…”

Accumulation of flavanols and expression of leucoanthocyanidin reductase induced by postharvest UV-C irradiation in grape berry

“…In response to elevated doses of solar radiation, an effective protective strategy is to accumulate phenolic compounds that selectively absorb UV-C irradiation in the plant cuticle and epidermis (Pontin et al, 2010;Koyama et al, 2012). These compounds also act as scavengers of reactive oxygen species in living cells to counteract the consequences of irradiation (Pontin et al, 2010;Rodrigo et al, 2011;Koyama et al, 2012).…”

“…These compounds also act as scavengers of reactive oxygen species in living cells to counteract the consequences of irradiation (Pontin et al, 2010;Rodrigo et al, 2011;Koyama et al, 2012). Koyama et al (2012) found that phenolic compounds are biosynthesized through the phenylpropanoid and flavonoid pathways and originated from phenylalanine, which were among the most characterized secondary metabolic pathways in plants. Tegelberg et al (2001) proposed that polyphenolic flavonoids and related phenols accumulate in response to UV-C irradiation.…”

“…The biosynthesis and accumulation of polyphenols are regulated by environmental conditions such as temperature (Wen et al, 2008;Crifò et al, 2011), illumination (Wang et al, , 2012Koyama et al, 2012), and water (Acevedo-Opazo et al, 2010;Ollé et al, 2011;Quiroga et al, 2012). Numerous studies have reported that ultraviolet (UV) irradiation induces the accumulation of polyphenols Guerrero et al, 2010;Interdonato et al, 2011;Sergio et al, 2012;Zhang et al, 2012).…”