Shading Effects on Leaf Color Conversion and Biosynthesis of the Major Secondary Metabolites in the Albino Tea Cultivar “Yujinxiang”

Ping Xu; Hui Su; Rong Jin; Yuxiao Mao; Anan Xu; Haiyan Cheng; Yuefei Wang; Qing Meng

doi:10.1021/acs.jafc.9b08212

Shading Effects on Leaf Color Conversion and Biosynthesis of the Major Secondary Metabolites in the Albino Tea Cultivar “Yujinxiang”

Journal of Agricultural and Food Chemistry ◽

10.1021/acs.jafc.9b08212 ◽

2020 ◽

Vol 68 (8) ◽

pp. 2528-2538 ◽

Cited By ~ 1

Author(s):

Ping Xu ◽

Hui Su ◽

Rong Jin ◽

Yuxiao Mao ◽

Anan Xu ◽

...

Keyword(s):

Secondary Metabolites ◽

Leaf Color ◽

Shading Effects ◽

Color Conversion ◽

Tea Cultivar

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Genomic Variance and Transcriptional Comparisons Reveal the Mechanisms of Leaf Color Affecting Palatability and Stressed Defense in Tea Plant

Genes ◽

10.3390/genes10110929 ◽

2019 ◽

Vol 10 (11) ◽

pp. 929 ◽

Cited By ~ 3

Author(s):

Xuewen Wang ◽

Ben-ying Liu ◽

Qingshi Zhao ◽

Xuemei Sun ◽

Youyong Li ◽

...

Keyword(s):

Anthocyanin Biosynthesis ◽

Transcript Abundance ◽

Tea Plant ◽

Leaf Color ◽

Leaf Coloration ◽

Genomic Variance ◽

Alternatively Spliced ◽

Response To Stress ◽

Purple Coloration ◽

Tea Cultivar

Leaves are one of the most important organs of plants, and yet, the association between leaf color and consumable traits remains largely unclear. Tea leaves are an ideal study system with which to investigate the mechanism of how leaf coloration affects palatability, since tea is made from the leaves of the crop Camellia sinensis. Our genomic resequencing analysis of a tea cultivar ZiJuan (ZJ) with purple leaves and altered flavor revealed genetic variants when compared with the green-leaf, wild type cultivar YunKang(YK). RNA-Seq based transcriptomic comparisons of the bud and two youngest leaves in ZJ and YK identified 93%, 9% and 5% expressed genes that were shared in YK- and ZJ-specific cultivars, respectively. A comparison of both transcript abundance and particular metabolites revealed that the high expression of gene UFGT for anthocyanin biosynthesis is responsible for purple coloration, which competes with the intermediates for catechin-like flavanol biosynthesis. Genes with differential expression are enriched in response to stress, heat and defense, and are casually correlated with the environmental stress of ZJ plant origin in the Himalayas. In addition, the highly expressed C4H and LDOX genes for synthesizing flavanol precursors, ZJ-specific CLH1 for degrading chlorophyll, alternatively spliced C4H and FDR and low photosynthesis also contributed to the altered color and flavor of ZJ. Thus, our study provides a better molecular understanding of the effect of purple coloration on leaf flavor, and helps to guide future engineering improvement of palatability.

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Lycopene alleviates sulfamethoxazole-induced hepatotoxicity in grass carp (Ctenopharyngodon idellus) via suppression of oxidative stress, inflammation and apoptosis

Food & Function ◽

10.1039/d0fo01638a ◽

2020 ◽

Vol 11 (10) ◽

pp. 8547-8559

Author(s):

Hongjing Zhao ◽

Yu Wang ◽

Mengyao Mu ◽

Menghao Guo ◽

Hongxian Yu ◽

...

Keyword(s):

Oxidative Stress ◽

Secondary Metabolites ◽

Human Health ◽

Grass Carp ◽

Aquatic Environment ◽

Ctenopharyngodon Idellus

Antibiotics are used worldwide to treat diseases in humans and other animals; most of them and their secondary metabolites are discharged into the aquatic environment, posing a serious threat to human health.

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