The R2R3-MYB transcription factor CsMYB73 negatively regulates l-Theanine biosynthesis in tea plants (Camellia sinensis L.)

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成果类型：

期刊论文

作者：

Wen, Beibei;Luo, Yong;Liu, Dongmin;Zhang, Xiangna;Peng, Zhong;...

通讯作者：

Wang, Kunbo;Huang, Jianan;Liu, Zhonghua

作者机构：

[Wen, Beibei; Wang, KB; Huang, JN; Liu, Zhonghua; Zhang, Xiangna; Wang, Kunbo; Li, Juan; Huang, Jianan] Hunan Agr Univ, Key Lab Tea Sci, Minist Educ, Changsha 410128, Hunan, Peoples R China.

[Luo, Yong] Xiangnan Univ, Sch Chem Biol & Environm Engn, Chenzhou 423000, Hunan, Peoples R China.

[Liu, Dongmin] Changsha Univ Sci & Technol, Changsha 410114, Hunan, Peoples R China.

[Liu, Zhonghua; Wang, Kunbo; Li, Juan; Huang, Jianan; Peng, Zhong] Hunan Agr Univ, Natl Res Ctr Engn & Technol Utilizat Bot Funct In, Changsha 410128, Hunan, Peoples R China.

[Liu, Zhonghua; Wang, Kunbo; Li, Juan; Huang, Jianan; Peng, Zhong] Hunan Agr Univ, Hunan Coinnovat Ctr Utilizat Bot Funct Ingredient, Changsha 410128, Hunan, Peoples R China.

通讯机构：

[Wang, KB; Huang, JN; Liu, ZH] H

Hunan Agr Univ, Key Lab Tea Sci, Minist Educ, Changsha 410128, Hunan, Peoples R China.

语种：

英文

关键词：

Camellia sinensis;Glutamine synthetase;MYB;Phenylalanine pathway;Transcriptional regulator;l-theanine biosynthesis

期刊：

Plant Science

ISSN：

0168-9452

年：

2020

卷：

298

页码：

110546

DOI：

10.1016/j.plantsci.2020.110546

基金类别：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [U19A2030, 31470692, 31670691, 31500567]

机构署名：

本校为第一且通讯机构

院系归属：

园艺园林学院

摘要：

l-Theanine, a non-proteinaceous amino acid abundantly present in tea (Camellia sinensis), contributes to the umami flavor of tea and has beneficial effects on human health. While key l-theanine biosynthetic genes have been well documented, their transcriptional regulation remains poorly understood. In this study, we determined the l-theanine contents in tea leaves of two cultivars at three developmental stages and investigated the expression patterns of the l-theanine biosynthetic genes CsGS1 and CsGS2. Additionally, we identified an R2R3-MYB transcription factor, CsMYB73, belonging to subgrou...

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The R2R3-MYB transcription factor CsMYB73 negatively regulates l-Theanine biosynthesis in tea plants (Camellia sinensis L.)

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