Induction of hairy roots by<i>Agrobacterium rhizogenes</i>in relation to L-theanine production in<i>Camellia sinensis</i>

Zhang, G. H.; Liang, YR; Jin, Jo Yu; Jl, Lu; Borthakur, Dulal; Dong, Jimmy; Zheng, X.Q.

doi:10.1080/14620316.2007.11512284

Cited by 5 publications

(1 citation statement)

References 14 publications

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“…1996). Theanine has recently received much attention due to its health benefits such as promoting relaxation, reducing stress and anxiety, improving memory and learning ability, as well as suppressing high blood pressure (Yokogoshi et al, 1995;Juneja et al, 1999;Kakuda, 2002;Kim et al, 2004;Zhang et al, 2007). Owing to its special quality and healthy potential, good tea products prepared from the albino tea cultivars are in great demand.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on accumulation of chlorophylls and leaf ultrastructure of low temperature induced albino tea plant

Du¹,

Chen²,

Zhong³

et al. 2008

Afr. J. Biotechnol.

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White young shoots from albino tea cultivars have high level of amino acids and are rare and valuable materials for processing green tea. The effects of temperature on leaf colour, accumulation of chlorophylls and leaf ultrastructures of an albino tea cultivar 'Xiaxueya' were investigated. The study showed that the shoot albino phenomenon of 'Xiaoxueya' was controlled by temperature. The development of chloroplast from etioplast and the accumulation of chlorophylls a and b were blocked and albino shoots were observed at 15˚C. However, the albino phenomenon was reversed when the plant was grown at 20˚C or above. The authors recommended that the albino tea cultivars should be grown at high altitude or high latitude areas so as to prolong the production season of albino tea shoots.

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Section: Introductionmentioning

confidence: 99%

Effect of temperature on accumulation of chlorophylls and leaf ultrastructure of low temperature induced albino tea plant

Du¹,

Chen²,

Zhong³

et al. 2008

Afr. J. Biotechnol.

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Woody Ornamentals of the Temperate Zone

Laere

Hokanson

Contreras

et al. 2018

Handbook of Plant Breeding

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An LC-ESI/MS method for determining theanine in green tea dietary supplements

2010

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Theanine is the major amino acid present in Camellia sinensis or green tea. A method for determining theanine in its native state using liquid chromatography with positive-mode electrospray ionization mass spectrometric detection was developed. Quantitation of theanine was achieved using theanine-[(2)H(5)] as an internal standard. This approach was utilized on different green tea matrix materials that are commonly used as dietary supplements including powdered plant leaves, a powdered plant leaf extract, and an oral dosage form that contains green tea. The theanine response was linear over several orders of magnitude, and excellent measurement precision was obtained for all three materials using the developed method.

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Induction of hairy roots byAgrobacterium rhizogenesin relation to L-theanine production inCamellia sinensis

Cited by 5 publications

References 14 publications

Effect of temperature on accumulation of chlorophylls and leaf ultrastructure of low temperature induced albino tea plant

Effect of temperature on accumulation of chlorophylls and leaf ultrastructure of low temperature induced albino tea plant

Woody Ornamentals of the Temperate Zone

An LC-ESI/MS method for determining theanine in green tea dietary supplements

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