Accumulation of catechins in tea in relation to accumulation of mRNA from genes involved in catechin biosynthesis

Eungwanichayapant, Prapassorn D.; Popluechai, Siam

doi:10.1016/j.plaphy.2008.11.002

Cited by 56 publications

(28 citation statements)

References 10 publications

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“…3C), which were consistent with the results of the chemical analyses. Eungwanichayapant and Popluechai (2009) previously confirmed that higher tea catechin concentrations are attributed to increased expression of catechin biosynthesis genes. It is also noteworthy that downstream catechin biosynthetic genes, such as F3H, ANS, ANR and LAR, were expressed at significantly higher levels (p < 0.05) in 'BAS'; expression of the upstream pathway genes PAL, CHS and CHI were not significantly different for the two cultivars, although they may also affect catechin biosynthesis in tea leaves (Liu et al, 2015).…”

Section: Differences In Transcript Levels Of Catechin Biosynthesis Rementioning

confidence: 63%

Green tea flavour determinants and their changes over manufacturing processes

et al. 2016

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Section: Differences In Transcript Levels Of Catechin Biosynthesis Rementioning

confidence: 63%

Green tea flavour determinants and their changes over manufacturing processes

et al. 2016

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“…Although, several independent studies have reported the expression profile of various genes of these pathways individually or in limited number in response to leaf age and different external cues in single varieties19202122232425. Also, these previous studies were limited either by gene studied, tissues, variety and/or season.…”

Section: Resultsmentioning

confidence: 99%

Comparative Transcriptome Analysis of Chinary, Assamica and Cambod tea (Camellia sinensis) Types during Development and Seasonal Variation using RNA-seq Technology

Kumar

Chawla

Sharma

et al. 2016

Sci Rep

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Tea quality and yield is influenced by various factors including developmental tissue, seasonal variation and cultivar type. Here, the molecular basis of these factors was investigated in three tea cultivars namely, Him Sphurti (H), TV23 (T), and UPASI-9 (U) using RNA-seq. Seasonal variation in these cultivars was studied during active (A), mid-dormant (MD), dormant (D) and mid-active (MA) stages in two developmental tissues viz. young and old leaf. Development appears to affect gene expression more than the seasonal variation and cultivar types. Further, detailed transcript and metabolite profiling has identified genes such as F3′H, F3′5′H, FLS, DFR, LAR, ANR and ANS of catechin biosynthesis, while MXMT, SAMS, TCS and XDH of caffeine biosynthesis/catabolism as key regulators during development and seasonal variation among three different tea cultivars. In addition, expression analysis of genes related to phytohormones such as ABA, GA, ethylene and auxin has suggested their role in developmental tissues during seasonal variation in tea cultivars. Moreover, differential expression of genes involved in histone and DNA modification further suggests role of epigenetic mechanism in coordinating global gene expression during developmental and seasonal variation in tea. Our findings provide insights into global transcriptional reprogramming associated with development and seasonal variation in tea.

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“…4 and 5). However, it is noteworthy that the expression level of PAL is not always correlated with catechin accumulation (Eungwanichayapant and Popluechai, 2009). …”

Section: Discussionmentioning

confidence: 99%

“…Recently, there have been considerable advances in research on catechin biosynthesis in tea plants. Some of the genes in the tea catechin biosynthesis have been cloned, and the relationship between expression of these genes and accumulation of catechins has been investigated (Punyasiri et al, 2004;Singh et al, 2008Singh et al, , 2009aEungwanichayapant and Popluechai, 2009;Ashihara et al, 2010). However, the mechanisms involved in biosynthesis of catechins, especially the gene regulatory network, are still poorly understood.…”

Section: Introductionmentioning

confidence: 99%