Accumulation of theanine in tea plant (Camellia sinensis (L.) O. Kuntze): Biosynthesis, transportation and strategy for improvement

IF 4.1 2区生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY Plant Science Pub Date : 2025-03-01 Epub Date: 2025-01-31 DOI:10.1016/j.plantsci.2025.112406

Qianting Luo , Hua-Feng He

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Abstract

Theanine, specifically biosynthesized and accumulated in Camellia sinensis (L.) O. Kuntze, is widely recognized as the most positive ingredient related to the quality of tea. Therefore, genetic factors related to the biosynthesis of theanine in tea plant, CsAlaDC, CsGGTs and CsMYBs, etc., were elaborated and proved to be influential. Oppositely, TFs acting on the growth and development of tea plants, CsPIF, CsHO as well as CsGDH were demonstrated to be negative for biosynthesis of theanine. Since root is the original assembly site, transportation is indispensable for the accumulation of theanine in leaf. CsAAP7.2 was elucidated to be involved in the transportation of theanine crossing the vascular system to vegetative tissues. In order to promote the accumulation of theanine, strategies were proposed in aspect of processing, cultivation, fertilizer as well as germplasm innovation. Appropriate processing technology, scientific planting manner and fertilizer application, coupling with domestication of excellent varieties portrayed out the future orientation of theanine. Purpose of the review was to summarize advantages achieved in related to metabolism of theanine, and to motivate more intensive and more effective means to promote the accumulation of theanine in tea plant.

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茶氨酸在茶树（Camellia sinensis (L.)）中的积累O. Kuntze)：生物合成、运输和改进策略。

茶氨酸（Camellia sinensis， L.）的特异性生物合成和积累紫茶，被广泛认为是与茶叶质量有关的最积极的成分。因此，阐述了影响茶树茶氨酸生物合成的遗传因素，如CsAlaDC、CsGGTs和CsMYBs等。相反，作用于茶树生长发育的TFs、CsPIF、CsHO和CsGDH对茶氨酸的生物合成均呈阴性。由于根是茶氨酸的初始组装点，运输是茶氨酸在叶片中积累的必要条件。CsAAP7.2参与了茶氨酸通过维管系统向营养组织的运输。为促进茶氨酸的积累，从加工、栽培、施肥和种质创新等方面提出了对策。适宜的加工工艺，科学的种植方式和施肥，结合优良品种的驯化，描绘了茶氨酸未来的发展方向。本文旨在总结茶氨酸代谢方面的研究成果，为促进茶氨酸在茶树体内的积累提供更深入、更有效的途径。

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来源期刊

Plant Science 生物-生化与分子生物学

CiteScore

9.10

自引率

1.90%

发文量

322

审稿时长

33 days

期刊介绍： Plant Science will publish in the minimum of time, research manuscripts as well as commissioned reviews and commentaries recommended by its referees in all areas of experimental plant biology with emphasis in the broad areas of genomics, proteomics, biochemistry (including enzymology), physiology, cell biology, development, genetics, functional plant breeding, systems biology and the interaction of plants with the environment. Manuscripts for full consideration should be written concisely and essentially as a final report. The main criterion for publication is that the manuscript must contain original and significant insights that lead to a better understanding of fundamental plant biology. Papers centering on plant cell culture should be of interest to a wide audience and methods employed result in a substantial improvement over existing established techniques and approaches. Methods papers are welcome only when the technique(s) described is novel or provides a major advancement of established protocols.