A study on the chemical composition of albino tea cultivars

Du, Ying-Ying; Liang, Yue-Rong; Wang, Hailong; Wang, K. R.; Lu, Jian-Liang; Zhang, G. H.; Wang, Lin; Li, M.; Fang, Qiong

doi:10.1080/14620316.2006.11512142

Cited by 56 publications

(71 citation statements)

References 9 publications

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“…High levels of free amino acids are essential for good-quality green teas. For example, albino tea cultivar, a good cultivar for making green teas, has a higher level of total amino acids and lower levels of total catechins and caffeine because the biosynthetic inhibition of catechins, and caffeine might lead to a shift in the metabolic network toward amino acid biosynthesis (Du et al, 2006;Feng et al, 2014). According to the metabolomics results ( Fig.…”

Section: Resultsmentioning

confidence: 99%

The Quality Evaluation of Tea (Camellia sinensis) Varieties Based on the Metabolomics

Gai¹,

Wang²,

Jiang³

et al. 2019

horts

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The identification and evaluation of tea [Camellia sinensis (L.) O. Kuntze] germplasm resources are of great significance for tea plant breeding. In recent years, various methods, such as morphology, biochemistry, molecular markers, and sensory evaluation, have been used to evaluate the tea germplasm resources. However, the evaluation of tea germplasms based on metabolomics is rarely reported. In this study, we first measured the main agronomic characters and biochemical components of tea young shoots in spring, and then analyzed the metabolic profiles using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography with tandem mass spectrometry (LC-MS/MS). The results indicate that tea germplasm accessions QN3 and QN38 had excellent agronomic traits with early germination and high yield compared with HM. The biosynthesis of flavonoids in young shoots of QN3 was more vigorous, especially for the biosynthesis of epigallocatechin gallate (EGCG) and epicatechin gallate (ECG). Accession QN3 had highest content of luteoloside, myricetin and rutin, whereas QN38 had highest content of most amino acids. On the basis of sensory quality evaluation, accession QN3 and QN38 all had higher total quality scores. By using these approaches, we found that QN3 and QN38 are excellent breeding materials with high yield and high quality for making green teas. We also believe that the evaluation system constructed by the approaches described here is suitable for the identification of tea germplasms.

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Section: Resultsmentioning

confidence: 99%

The Quality Evaluation of Tea (Camellia sinensis) Varieties Based on the Metabolomics

Gai¹,

Wang²,

Jiang³

et al. 2019

horts

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“…To date, tea cultivars and their products in China show the 'colorful' trend [2]. Albino tea cultivars are special mutants of the tea plant with white or yellow leaf color under certain environmental conditions, such as low temperature or high light intensity [3][4][5]. Compared to normal green cultivars, they are de cient in chlorophyll.…”

Section: Introductionmentioning

confidence: 99%

“…Compared to normal green cultivars, they are de cient in chlorophyll. Albino tea germplasm is precious because of their special avor, distinct leaf color and scarcity [4]. The sun-light is one of the necessary conditions for photosynthesis which plays an important role in the chlorophyll synthesis [6].…”

Section: Introductionmentioning

confidence: 99%

Lipidomics Analysis Reveals the Effect of Light Intensity on Lipid Metabolism and Leaf Color in Light-Sensitive Albino Tea Plant (Camellia Sinensis cv. Baijiguan)

Zhou

Chen

Lin

et al. 2020

Preprint

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Background: Camellia sinensis cv. Baijiguan is a light-sensitive albino tea germplasm. Under light stress, the development of thylakoid membrane structure is not complete, leading to the white color of leaves. Previous studies have shown that the change of lipid can cause the change of thylakoid membrane structure. However, there is no study on the effect of lipid on the leaf color of light-sensitive albino tea germplasm. Thus, we hypothesized that the changes of lipid composition in Baijiguan could affect the leaf color.Results: In order to understand the mechanisms of its light sensitivity, Baijiguan and Rougui were grown under three different conditions: normal light, shading, shading followed by the resuming of light. The total lipids were isolated from the second leaf， 156 lipid species were identified and analyzed by lipidomics. We found that under normal light condition，the newly-developed leaves showed the yellow color with incomplete development of thylakoid membrane, the defense enzyme activity was maintained at a high level, accelerated degradation of chlorophyll. The ratio of MGDG to DGDG of Baijiguan was lower than that of Rougui which kept normal green leaf color. The shading treatment, reduced the content of MGDG and DGDG; meanwhile chlorophyll accumulated, and the thylakoid membrane formed, the leaves turned into green color. When shade-treated leaves were reexposed to light, the MGDG to DGDG ratio increased significantly, the lipid content decreased significantly, and the albinism emerged again. Conclusion: Our data demonstrated that the effect of light intensity on Baijiguan leaf color was realized by changing the lipid content and components in the leaves, and offered a new insight about the mechanisms of its leaf albinism.

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“…Some tea germplasm resources with HAAC have been discovered, are crucial materials for tea breeding, and can produce tea with enormous economic and social benefits. For example, albino tea plants, a famous tea variation with young white shoots and higher amino acid levels than their green counterparts, have attracted much attention in recent years (Li et al, 1996;Du et al, 2006). Wang et al (2014) indicated that the total free amino acid content is significantly higher in the leaves of a yellow leaf tea cultivar (Zhonghuang 2; ZH2) than in those of Longjin 43 (LJ43).…”

Section: Introductionmentioning

confidence: 99%

Quality constituents of high amino acid content tea cultivars with various leaf colors

Ma¹,

Li²,

Cao³

et al. 2018

Turk J Agric For

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Green tea made from high amino acid content (HAAC) tea cultivars with different leaf colors exhibits many similar characteristics, such as slight bitterness, a rich aroma, and a refreshing and velvety taste. To determine differences in the key constituents of five HAAC tea cultivars with various leaf colors, the cultivars quality constituents were systematically analyzed and compared with that of a normal green tea cultivar. High theanine (Thea) content and the synthesis of Thea precursors are extremely important determinants of the character of these HAAC tea cultivars. The levels of most catechins, carotenoids, and chlorophylls in the HAAC tea cultivars were significantly lower than those in the normal tea cultivar, as was that of caffeine. The present study suggests that the inhibition of catechins (particularly epicatechins; ECs), chlorophylls, carotenoids, and caffeine biosyntheses in HAAC tea cultivars directs the metabolic network toward amino acid biosynthesis, particularly Thea biosynthesis.

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A study on the chemical composition of albino tea cultivars

Cited by 56 publications

References 9 publications

The Quality Evaluation of Tea (Camellia sinensis) Varieties Based on the Metabolomics

The Quality Evaluation of Tea (Camellia sinensis) Varieties Based on the Metabolomics

Lipidomics Analysis Reveals the Effect of Light Intensity on Lipid Metabolism and Leaf Color in Light-Sensitive Albino Tea Plant (Camellia Sinensis cv. Baijiguan)

Quality constituents of high amino acid content tea cultivars with various leaf colors

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