Research progress on the response of tea catechins to drought stress
| Autor: | Chenyu Zhang, Chenyu Shao, Chengwen Shen, Enshuo Liu, Danni Yuan, Baogui Liu, Zhidong Lv, Yuebing Zhou |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Antioxidant
030309 nutrition & dietetics medicine.medical_treatment Oxidative phosphorylation medicine.disease_cause Antioxidants Camellia sinensis Catechin 03 medical and health sciences chemistry.chemical_compound 0404 agricultural biotechnology Stress Physiological medicine Food science chemistry.chemical_classification 0303 health sciences Reactive oxygen species Nutrition and Dietetics Abiotic stress Water food and beverages 04 agricultural and veterinary sciences 040401 food science Droughts Plant Leaves Oxidative Stress chemistry Proanthocyanidin Agronomy and Crop Science Oxidative stress Food Science Biotechnology |
| Zdroj: | Journal of the Science of Food and Agriculture. 101:5305-5313 |
| ISSN: | 1097-0010 0022-5142 |
| DOI: | 10.1002/jsfa.11330 |
| Popis: | Drought stress (DS) is the most important abiotic stress affecting yield and quality of tea worldwide. DS causes oxidative stress to cells due to the accumulation of reactive oxygen species (ROS). As non-enzymatic antioxidants, tea catechins can scavenge excess ROS in response to DS. Further, catechin accumulation contributes to the formation of oxidative polymerization products (e.g. theaflavins and thearubigins) that improve the quality of black tea. However, there are no systematic reports on the response of tea catechins to DS. First, we reviewed the available literature on the response of tea plants to DS. Second, we summarized the current knowledge of ROS production in tea leaves under DS and typical antioxidant response mechanisms. Third, we conducted a detailed review of the changes in catechin levels in tea under different drought conditions. We found that the total amounts of catechin and o-quinone increased under DS conditions. We propose that the possible mechanisms underlying tea catechin accumulation under DS conditions include (i) autotrophic formation of o-quinone, (ii) polymerization of proanthocyanidins that directly scavenge excess ROS, and (iii) formation of metal ion complexes and by influencing the antioxidant systems that indirectly eliminate excess ROS. Finally, we discuss ways of potentially improving black tea quality using drought before picking in the summer/fall dry season. In summary, we mainly discuss the antioxidant mechanisms of tea catechins under DS and the possibility of using drought to improve black tea quality. Our review provides a theoretical basis for the production of high-quality black tea under DS conditions. © 2021 Society of Chemical Industry. |
| Databáze: | OpenAIRE |
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