文献类型： 外文期刊

作者： Yu, Li ¹ ; Chen, Qiangwen ¹ ; Liao, Xiaoli ¹ ; Yang, Xiaoyan ³ ; Chao, Wei ¹ ; Cong, Xin ² ; Zhang, Weiwei ¹ ; Liao, Yongling ¹ ; Ye, Jiabao ¹ ; Qian, Hua ⁵ ; Zhao, Yang ⁵ ; Cheng, Shuiyuan ⁴ ; Xu, Feng ¹ ;

作者机构： 1.Yangtze Univ, Coll Hort & Gardening, Jinzhou 434025, Peoples R China

2.Enshi Se Run Mat Engn Technol Co Ltd, Enshi 445000, Peoples R China

3.Shaoguan Univ, Henry Fok Sch Biol & Agr, Shaoguan 512005, Peoples R China

4.Wuhan Polytech Univ, Natl R&D Ctr Se Rich Agr Prod Proc, Sch Modern Ind Selenium Sci & Engn, Wuhan 430023, Peoples R China

5.Heilongjiang Acad Agr Sci, Harbin 150086, Peoples R China

关键词： Brassica oleracea; selenite; nutrient quality; Se speciation; antioxidant enzymes

期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.4 ）

ISSN：

年卷期： 2023 年 9 卷 3 期

页码：

收录情况： SCI

摘要： Selenium (Se) is an important trace element in human and animal health. Approximately 0.5-1 billion people worldwide are facing Se deficiency which can result in various endemic diseases. Cabbage is one of the most popular vegetables and can accumulate Se through biofortification. Therefore, producing Se-enriched cabbage may be an effective method to alleviate Se deficiency. In this study, the effects of different concentrations of selenite application on the growth and nutritional quality of cabbage were investigated and the results showed that the growth of cabbage was promoted at low concentrations of selenite (0.1-0.4 mmol/L) but inhibited at high concentrations (0.8-1.6 mmol/L). Concentrations of 0.1-0.2 mmol/L of selenite induced the accumulation of primary metabolites (soluble proteins, soluble sugars, and free amino acids), representative secondary metabolites (ascorbic acid, glucosinolates, flavonoids, anthocyanins, and phenolic acids), and important antioxidant enzyme (glutathione peroxidase, catalase, and superoxide dismutase) activity to improve the nutritional quality of cabbages. In addition, a higher concentration (0.8-1.6 mmol/L) of selenite proved beneficial in the accumulation of total Se and representative organic Se in cabbages. The main organic Se species in cabbage were selenomethionine (SeMet), accounting for 12.10% of total Se, followed by selenocysteine (SeCys(2)), accounting for 2.96% of total Se. It is suggested that an appropriate dose of exogenous selenite could be selected for different production purposes in cabbage cultivation. These findings are helpful for us to deeply understand the effects of selenite on the growth and nutritional quality of cabbages and to provide reliable technical support for vegetable cultivation and Se biofortification.