Influence of shade on flavonoid biosynthesis in tea (Camellia sinensis (L.) O. Kuntze)

Wang, Yunsheng; Gao, Liping; Yu, Sibin; Li, Yajun; Tian, Yaxi; Xia, Tao

doi:10.1016/j.scienta.2012.04.013

Cited by 173 publications

(154 citation statements)

References 34 publications

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“…This finding in the green cultivar ‘SCZ’ was consistent with previous reports on the changes in the abundance of galloylated and non-galloylated catechins in shaded and non-shaded tea leaves4041. However, the data for albino ‘YJX’ differed from a previous report42 in which a significant reduction occurred in catechin levels after 3 weeks of shading compared to non-shaded green tea cultivar42. This difference could result from a change in metabolic flow in albino tea leaves and from differently applied shading periods compared with our study43.…”

Section: Discussionsupporting

confidence: 91%

“…In detail, TEM, chemical and qPCR analyses were performed using the four types of leaves to give direct comparisons. For transcriptomic data analysis, non-shaded pale and shaded re-greening leaves in ‘YJX’ were used since the changes in ‘YJX’ over the leaf color conversion were focused and leaf transcript analysis of normal green cultivars under shade and non-shade conditions had been reported before4258.…”

Section: Methodsmentioning

confidence: 99%

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Metabolic Flux Redirection and Transcriptomic Reprogramming in the Albino Tea Cultivar ‘Yu-Jin-Xiang’ with an Emphasis on Catechin Production

Han

Lin

et al. 2017

Sci Rep

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In this study, shade-induced conversion from a young pale/yellow leaf phenotype to a green leaf phenotype was studied using metabolic and transcriptomic profiling and the albino cultivar ‘Yu-Jin-Xiang’ (‘YJX’) of Camellia sinensis for a better understanding of mechanisms underlying the phenotype shift and the altered catechin and theanine production. Shaded leaf greening resulted from an increase in leaf chlorophyll and carotenoid abundance and chloroplast development. A total of 1,196 differentially expressed genes (DEGs) were identified between the ‘YJX’ pale and shaded green leaves, and these DEGs affected ‘chloroplast organization’ and ‘response to high light’ besides many other biological processes and pathways. Metabolic flux redirection and transcriptomic reprogramming were found in flavonoid and carotenoid pathways of the ‘YJX’ pale leaves and shaded green leaves to different extents compared to the green cultivar ‘Shu-Cha-Zao’. Enhanced production of the antioxidant quercetin rather than catechin biosynthesis was correlated positively with the enhanced transcription of FLAVONOL SYNTHASE and FLAVANONE/FLAVONOL HYDROXYLASES leading to quercetin accumulation and negatively correlated to suppressed LEUCOANTHOCYANIDIN REDUCTASE, ANTHOCYANIDIN REDUCTASE and SYNTHASE leading to catechin biosynthesis. The altered levels of quercetin and catechins in ‘YJX’ will impact on its tea flavor and health benefits.

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Section: Discussionsupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Metabolic Flux Redirection and Transcriptomic Reprogramming in the Albino Tea Cultivar ‘Yu-Jin-Xiang’ with an Emphasis on Catechin Production

Han

Lin

et al. 2017

Sci Rep

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“…A study on the flavonoid content demonstrated that a tea variety with higher TPC was more tolerant to both light and water stress unlike the susceptible varieties with lower flavonoid levels (Yaginuma et al, 2003). This differs from (Wang et al, 2012), explaining why PC153 has a low TPC. There is however no explanation as to why PC168 did not drop in TPC as this particular cultivar has been classified as tolerant from field studies over several years (Mphangwe et al, 2013).…”

Section: Total Polyphenol Contentmentioning

confidence: 99%

SWAPDT: A method for Short-time Withering Assessment of Probability for Drought Tolerance in Camellia sinensis validated by targeted metabolomics

Nyarukowa

Koech

Loots

et al. 2016

Journal of Plant Physiology

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“…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).…”

Section: Introductionmentioning

confidence: 99%

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

Wen

Gao

et al. 2015

Genet. Mol. Res.

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ABSTRACT.To examine the effect of postharvest ultraviolet C (UV-C) irradiation on flavanol polyphenol accumulation in the grape berry, we investigated total flavanol polyphenol content, the enzyme activity of leucoanthocyanidin reductase (LAR), and transcription of Vv lar1 and Vv lar2 using spectrophotometry, real-time polymerase chain reaction, and western blot analysis in 5-year-old Vitis vinifera L. cv. Cabernet Sauvignon plants. Our results indicated that the accumulation of flavanol polyphenol reached its highest value when exposed to UV-C irradiation for 30 min. Additionally, UV-C irradiation induced the transcription of Vv lar1 and Vv lar2 and the synthesis of LAR1 and LAR2 proteins, resulting in increased accumulation of flavanol polyphenol in the grape berry. Moreover, these effects were associated with the length of time of UV-C irradiation.

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Influence of shade on flavonoid biosynthesis in tea (Camellia sinensis (L.) O. Kuntze)

Cited by 173 publications

References 34 publications

Metabolic Flux Redirection and Transcriptomic Reprogramming in the Albino Tea Cultivar ‘Yu-Jin-Xiang’ with an Emphasis on Catechin Production

Metabolic Flux Redirection and Transcriptomic Reprogramming in the Albino Tea Cultivar ‘Yu-Jin-Xiang’ with an Emphasis on Catechin Production

SWAPDT: A method for Short-time Withering Assessment of Probability for Drought Tolerance in Camellia sinensis validated by targeted metabolomics

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

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