Aluminium and nutrients induce changes in the profiles of phenolic substances in tea plants (<i>Camellia sinensis</i>
 CV TTES, No. 12 (TTE))

Chen, Yue Ming; Tsao, Tsung-Ming; Liu, Cheng Chung; Lin, Kuo-Chuan; Wang, Ming Kuang

doi:10.1002/jsfa.4291

Cited by 31 publications

(16 citation statements)

References 52 publications

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“…Among the many enzymes known to be involved in catechin synthesis are chalcone synthase (CHS), chalconeisomerase (CHI), dihydroflavonol 4-reductase (DFR), anthocyanidin synthase (ANS), anthocyanidinreductase (ANR) and flavonoid 3,5-hydroxylase (F3’5’H) [ 11 – 13 ]. Environmental factors affecting catechin accumulation include soil humidity, light intensity and nutrition [ 14 ]. Short-term ultraviolet-B irradiation promotes the accumulation of total catechins, whereas excessive irradiation suppresses it [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Combined small RNA and degradome sequencing reveals complex microRNA regulation of catechin biosynthesis in tea (Camellia sinensis)

et al. 2017

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MicroRNAs are endogenous non-coding small RNAs playing crucial regulatory roles in plants. Tea, a globally popular non-alcoholic drink, is rich in health-enhancing catechins. In this study, 69 conserved and 47 novel miRNAs targeting 644 genes were identified by high-throughout sequencing. Predicted target genes of miRNAs were mainly involved in plant growth, signal transduction, morphogenesis and defense. To further identify targets of tea miRNAs, degradome sequencing and RNA ligase-mediated rapid amplification of 5’cDNA ends (RLM-RACE) were applied. Using degradome sequencing, 26 genes mainly involved in transcription factor, resistance protein and signal transduction protein synthesis were identified as potential miRNA targets, with 5 genes subsequently verified. Quantitative real-time PCR (qRT-PCR) revealed that the expression patterns of novel-miR1, novel-miR2, csn-miR160a, csn-miR162a, csn-miR394 and csn-miR396a were negatively correlated with catechin content. The expression of six miRNAs (csn-miRNA167a, csn-miR2593e, csn-miR4380a, csn-miR3444b, csn-miR5251 and csn-miR7777-5p.1) and their target genes involved in catechin biosynthesis were also analyzed by qRT-PCR. Negative and positive correlations were found between these miRNAs and catechin contents, while positive correlations were found between their target genes and catechin content. This result suggests that these miRNAs may negatively regulate catechin biosynthesis by down-regulating their biosynthesis-related target genes. Taken together, our results indicate that miRNAs are crucial regulators in tea, with the results of 5’-RLM-RACE and expression analyses revealing the important role of miRNAs in catechin anabolism. Our findings should facilitate future research to elucidate the function of miRNAs in catechin biosynthesis.

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Section: Introductionmentioning

confidence: 99%

Combined small RNA and degradome sequencing reveals complex microRNA regulation of catechin biosynthesis in tea (Camellia sinensis)

et al. 2017

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“…Li et al (2011) e (Ukhopadyay et al (2012 observaram que a baixas concentrações alumínio induz a formação de espécies reativas de oxigênio (EROS) nas folhas, ou seja, um estresse oxidativo, todavia a elevação da atividade de enzimas antioxidantes previne a injúria provocada pelos radicais livres, além de estimular o crescimento das plantas de chá (Mukhopadyay et al, 2012). Em raízes Chen et al (2011) observaram elevação no teor de catequinas, um polifenóil produzido pela planta de chá, quanto a planta é submetida a baixos teores de alumínio, o que indica que estes compostos estão relacionados com a detoxificação.…”

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Enraizamento de estacas de genótipos de Camellia sinensis L. em meio ácido, presença de alumínio e ácido indolbutírico

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2016

Rev. bras. plantas med.

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RESUMO:Experimentos foram conduzidos para avaliar o efeito do meio ácido e do alumínio, assim como para determinar a concentração mais apropriada de ácido indolbutírico (AIB) para o enraizamento de estacas de diferentes genótipos de Camellia sinensis L (planta de chá). Para tal, foram coletados ramos de plantas-matrizes em Pariquera-Açu-SP, Brasil, no inverno de 2012 e preparadas estacas semi-lenhosas, contendo uma gema e uma folha, que foram manti das em viveiro com 70% de sombreamento. A irrigação do substrato foi feita com água e soluções contendo ácido fosfórico e sulfato de alumínio a pH 5,5, 4,5; 3,5. No primeiro experimento, o delineamento experimental foi o inteiramente casualizado em esquema fatorial 3 x 7, três genótipos (F 15, IAC 259 e Comum) e sete condições diferentes de enraizamento (vermiculita a pH 6,5, vermiculita acidificada com ácido fosfórico a pH 3,5; 4,5 e 5,5 ou vermiculita acidificada com sulfato de alumínio a pH 3,5; 4,5 e 5,5). No segundo experimento, o tratamento que promoveu o maior enraizamento no primeiro experimento (vermiculita acidificada com sulfato de alumínio a pH 3,5) foi combinado ao tratamento com AIB. O delineamento experimental utilizado foi o inteiramente casualizado em esquema fatorial 3 x 6, sendo três genótipos e seis concentrações de AIB (0, 2000, 4000, 6000, 8000 e 1000 mg L -1 ). A vermiculita acidificada com sulfato de alumínio a pH 3,5, combinada a aplicação de 10000 mg L -1 de AIB por 30 segundos, foi o tratamento mais adequado para o enraizamento de estacas semi-lenhosas dos genótipos F15, IAC 259 e Comum.Palavras-chave: planta de chá, propagação vegetativa, acidificação, auxina.ABSTRACT: Rooting of Camellia sinensis L. in acid medium, the presence of aluminum and indolebutyric acid. The experiments were carried out to evaluate the effect of medium acidic and aluminum, as well as determine the most suitable concentration of indolebutyric acid (IBA) for rooting cuttings of different genotypes of Camellia sinensis L (tea plant). Such, stems were collected from mother plants in Pariquera-Açu, São Paulo state, Brazil, in winter 2012 and prepared semi-hardwood cuttings, with one bud and one leaf, which were kept in a nursery with 70% of shading. Irrigation substrate was taken with water and solutions containing phosphoric acid and aluminum sulfate at pH 5.5, 4.5; 3,5. In the first experiment, the experimental design was completely randomized in a factorial scheme 3x7, three genotypes (F 15, IAC 259 and Comum) and seven different conditions of rooting (vermiculite at pH 6.5, acidified with phosphoric acid or aluminum sulfate vermiculite at pH 3.5, 4.5 and 5.5). In the second experiment, the treatment that promoted the highest rooting in the first experiment (vermiculite acidified with aluminum sulfate at pH 3.5) was combined with treatment with IBA The experimental design was completely randomized in a factorial scheme 3x6, three genotypes and six concentrations of IBA (0, 2.000, 4.000, 6.000, 8.000 and 10.000 mg L -1 ). Vermiculite acidified with aluminum sulphate ...

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“…The decrease in root growth is one of the initial and most evident symptoms of Al toxicity in plants (Chen et al 2011), thereby reducing the capacity for water and nutrient uptake. Above ground plant parts may also be affected by Al phytotoxicity (Peixoto et al 2002, Garzón et al 2011.…”

Section: Introductionmentioning

confidence: 99%

“…The concentration of phenolic compounds in plants can increase when stressed. For instance, Chen et al (2011) reported that tea plants increased the amount of phenolic compounds, i.e. catechin, when exposed to elevated Al concentrations.…”

Section: Introductionmentioning

confidence: 99%

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Aluminium tolerance in the tropical leguminous N2-fixing shrub Acaciella angustissima (Mill.) Britton & Rose inoculated with Sinorhizobium mexicanum

et al. 2011

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Aluminium and nutrients induce changes in the profiles of phenolic substances in tea plants (Camellia sinensis CV TTES, No. 12 (TTE))

Abstract: The Al concentration in tea plants indeed increases catechin concentrations and plays an important role in the growth of tea plants.

Cited by 31 publications

References 52 publications

Combined small RNA and degradome sequencing reveals complex microRNA regulation of catechin biosynthesis in tea (Camellia sinensis)

Combined small RNA and degradome sequencing reveals complex microRNA regulation of catechin biosynthesis in tea (Camellia sinensis)

Enraizamento de estacas de genótipos de Camellia sinensis L. em meio ácido, presença de alumínio e ácido indolbutírico

Aluminium tolerance in the tropical leguminous N2-fixing shrub Acaciella angustissima (Mill.) Britton & Rose inoculated with Sinorhizobium mexicanum

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