Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (<i>Camellia sinensis</i> L.) Based on a Field Experiment

Both UV and blue light have been reported to regulate the biosynthesis of flavonoids in tea plants; however, the respective contributions of the corresponding regions of sunlight are unclear. Additionally, different tea cultivars may respond differently to altered light conditions. We investigated t...

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Main Authors: Jing Jin, Yi-Qing Lv, Wei-Zhong He, Da Li, Ying Ye, Zai-Fa Shu, Jing-Na Shao, Jia-Hao Zhou, Ding-Mi Chen, Qing-Sheng Li, Jian-Hui Ye
Format: Article
Language:English
Published: MDPI AG 2021-11-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/23/7158
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author Jing Jin
Yi-Qing Lv
Wei-Zhong He
Da Li
Ying Ye
Zai-Fa Shu
Jing-Na Shao
Jia-Hao Zhou
Ding-Mi Chen
Qing-Sheng Li
Jian-Hui Ye
author_facet Jing Jin
Yi-Qing Lv
Wei-Zhong He
Da Li
Ying Ye
Zai-Fa Shu
Jing-Na Shao
Jia-Hao Zhou
Ding-Mi Chen
Qing-Sheng Li
Jian-Hui Ye
author_sort Jing Jin
collection DOAJ
description Both UV and blue light have been reported to regulate the biosynthesis of flavonoids in tea plants; however, the respective contributions of the corresponding regions of sunlight are unclear. Additionally, different tea cultivars may respond differently to altered light conditions. We investigated the responses of different cultivars (‘Longjing 43’, ‘Zhongming 192’, ‘Wanghai 1’, ‘Jingning 1’ and ‘Zhonghuang 2’) to the shade treatments (black and colored nets) regarding the biosynthesis of flavonoids. For all cultivars, flavonol glycosides showed higher sensitivity to light conditions compared with catechins. The levels of total flavonol glycosides in the young shoots of different tea cultivars decreased with the shade percentages of polyethylene nets increasing from 70% to 95%. Myricetin glycosides and quercetin glycosides were more sensitive to light conditions than kaempferol glycosides. The principal component analysis (PCA) result indicated that shade treatment greatly impacted the profiles of flavonoids in different tea samples based on the cultivar characteristics. UV is the crucial region of sunlight enhancing flavonol glycoside biosynthesis in tea shoots, which is also slight impacted by light quality according to the results of the weighted correlation network analysis (WGCNA). This study clarified the contributions of different wavelength regions of sunlight in a field experiment, providing a potential direction for slightly bitter and astringent tea cultivar breeding and instructive guidance for practical field production of premium teas based on light regimes.
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spelling doaj.art-84756dc6d58746dd91002f22c28e7fe82023-11-23T02:48:16ZengMDPI AGMolecules1420-30492021-11-012623715810.3390/molecules26237158Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (<i>Camellia sinensis</i> L.) Based on a Field ExperimentJing Jin0Yi-Qing Lv1Wei-Zhong He2Da Li3Ying Ye4Zai-Fa Shu5Jing-Na Shao6Jia-Hao Zhou7Ding-Mi Chen8Qing-Sheng Li9Jian-Hui Ye10Zhejiang Agricultural Technical Extension Center, 29 Fengqi East Road, Hangzhou 310020, ChinaTea Research Institute, Zhejiang University, Hangzhou 310013, ChinaLishui Institute of Agriculture and Forestry Sciences, Lishui 323000, ChinaInstitute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaTea Research Institute, Zhejiang University, Hangzhou 310013, ChinaLishui Institute of Agriculture and Forestry Sciences, Lishui 323000, ChinaLishui Institute of Agriculture and Forestry Sciences, Lishui 323000, ChinaTea Research Institute, Zhejiang University, Hangzhou 310013, ChinaTea Research Institute, Zhejiang University, Hangzhou 310013, ChinaInstitute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaTea Research Institute, Zhejiang University, Hangzhou 310013, ChinaBoth UV and blue light have been reported to regulate the biosynthesis of flavonoids in tea plants; however, the respective contributions of the corresponding regions of sunlight are unclear. Additionally, different tea cultivars may respond differently to altered light conditions. We investigated the responses of different cultivars (‘Longjing 43’, ‘Zhongming 192’, ‘Wanghai 1’, ‘Jingning 1’ and ‘Zhonghuang 2’) to the shade treatments (black and colored nets) regarding the biosynthesis of flavonoids. For all cultivars, flavonol glycosides showed higher sensitivity to light conditions compared with catechins. The levels of total flavonol glycosides in the young shoots of different tea cultivars decreased with the shade percentages of polyethylene nets increasing from 70% to 95%. Myricetin glycosides and quercetin glycosides were more sensitive to light conditions than kaempferol glycosides. The principal component analysis (PCA) result indicated that shade treatment greatly impacted the profiles of flavonoids in different tea samples based on the cultivar characteristics. UV is the crucial region of sunlight enhancing flavonol glycoside biosynthesis in tea shoots, which is also slight impacted by light quality according to the results of the weighted correlation network analysis (WGCNA). This study clarified the contributions of different wavelength regions of sunlight in a field experiment, providing a potential direction for slightly bitter and astringent tea cultivar breeding and instructive guidance for practical field production of premium teas based on light regimes.https://www.mdpi.com/1420-3049/26/23/7158<i>Camellia sinensis</i>light intensitylight spectral compositioncatechinsflavonol glycosidesshade treatment
spellingShingle Jing Jin
Yi-Qing Lv
Wei-Zhong He
Da Li
Ying Ye
Zai-Fa Shu
Jing-Na Shao
Jia-Hao Zhou
Ding-Mi Chen
Qing-Sheng Li
Jian-Hui Ye
Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (<i>Camellia sinensis</i> L.) Based on a Field Experiment
Molecules
<i>Camellia sinensis</i>
light intensity
light spectral composition
catechins
flavonol glycosides
shade treatment
title Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (<i>Camellia sinensis</i> L.) Based on a Field Experiment
title_full Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (<i>Camellia sinensis</i> L.) Based on a Field Experiment
title_fullStr Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (<i>Camellia sinensis</i> L.) Based on a Field Experiment
title_full_unstemmed Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (<i>Camellia sinensis</i> L.) Based on a Field Experiment
title_short Screening the Key Region of Sunlight Regulating the Flavonoid Profiles of Young Shoots in Tea Plants (<i>Camellia sinensis</i> L.) Based on a Field Experiment
title_sort screening the key region of sunlight regulating the flavonoid profiles of young shoots in tea plants i camellia sinensis i l based on a field experiment
topic <i>Camellia sinensis</i>
light intensity
light spectral composition
catechins
flavonol glycosides
shade treatment
url https://www.mdpi.com/1420-3049/26/23/7158
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