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Unlocking tea's potential: The synergistic role of selenium and phosphorus in enhancing tea quality

文献类型： 外文期刊

作者： Cao, Dan 1 ; Li, Juan 2 ; Ma, Linlong 1 ; Liu, Yanli 1 ; Huang, Jianan 2 ; Jin, Xiaofang 1 ;

作者机构： 1.Hubei Acad Agr Sci, Fruit & Tea Res Inst, Wuhan 430064, Hubei, Peoples R China

2.Hunan Agr Univ, Natl Res Ctr Engn & Technol Utilizat Bot Funct Ing, Minist Educ, Key Lab Tea Sci, Changsha 410128, Hunan, Peoples R China

3.Hunan Agr Univ, Hunan Coinnovat Ctr Utilizat Bot Funct Ingredients, Changsha 410128, Hunan, Peoples R China

关键词： Phosphorus; Selenium; Uptake; Translocation; Quality; Tea plant

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.7； 五年影响因子：6.4 ）

ISSN： 0981-9428

年卷期： 2025 年 221 卷

页码：

收录情况： SCI

摘要： Selenium (Se) deficiency is harmful for human health, and producing Se-enriched tea is an effective way to supplement Se. This study systematically analyzed the effects of Se-phosphorus (P) interaction on the absorption and transport of Se and the physiological and biochemical indicators of tea plants. The Se was applied in the form of sodium selenite at three concentrations (0, 50, 100 mu mol L-1), and P was applied as sodium dihydrogen phosphate at three concentrations (0.5, 1.5, and 10.5 mmol L-1). At the same Se concentrations (50.00 mu mol L-1, 500.00 mu mol L-1), P application could increase the Se content in roots (p < 0.05), while the Se transport coefficient decreased with increasing P concentrations. Gene expression analysis suggested that CsPht1;2a and CsPht1;3a were pivotal in selenite uptake in tea plants. At elevated P concentrations (10.50 mmol L-1), the application of 50.00 mu mol L-1 Se significantly increased the levels of chlorophyll b and total chlorophyll in the leaves (p < 0.05), whereas a concentration of 500.00 mu mol L-1 Se led to a marked increase in carotenoid content (p < 0.05). Under conditions of moderate P concentration (1.50 mmol L-1), Se concentrations of 50.00 mu mol L-1 and 500.00 mu mol L-1 were found to exert a significant positive effect on GSH content, as well as the enzymatic activities of SOD, POD, and APX (p < 0.05). At consistent P concentrations (0.50 mmol L-1, 10.50 mmol L-1), the application of Se at 500.00 mu mol L-1 significantly elevated the content of tea polyphenols in the leaves (p < 0.05). These findings indicated that appropriate P concentrations could promote the absorption and transport of Se in tea plants, thus improving tea quality.

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