[1]李杰,杨华,陈星旺,等.硒对辣椒果实中镉含量降低及硒富集效应的影响[J].江苏农业学报,2026,42(01):152-161.[doi:doi:10.3969/j.issn.1000-4440.2026.01.016]
 LI Jie,YANG Hua,CHEN Xingwang,et al.Effects of selenium on cadmium reduction and selenium enrichment in pepper fruits[J].,2026,42(01):152-161.[doi:doi:10.3969/j.issn.1000-4440.2026.01.016]
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硒对辣椒果实中镉含量降低及硒富集效应的影响()

江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
42
期数:
2026年01期
页码:
152-161
栏目:
园艺
出版日期:
2026-01-31

文章信息/Info

Title:
Effects of selenium on cadmium reduction and selenium enrichment in pepper fruits
作者:
李杰杨华陈星旺胡艳蔡雄飞王济
(贵州师范大学地理与环境科学学院/贵州省喀斯特山地生态环境国家重点实验室培育基地,贵州贵阳550025)
Author(s):
LI JieYANG HuaCHEN XingwangHU YanCAI XiongfeiWANG Ji
(School of Geography & Environmental Science, Guizhou Normal University/The State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang 550025, China)
关键词:
辣椒吸收转运
Keywords:
pepperseleniumcadmiumuptaketransport
分类号:
S641.3
DOI:
doi:10.3969/j.issn.1000-4440.2026.01.016
文献标志码:
A
摘要:
为了探明贵州省高镉(Cd)地质背景下施用硒(Se)对辣椒Cd积累的调控及硒富集机制,本研究通过水培试验,将辣椒幼苗暴露于含10 μmol/L Cd的1/2浓度Hoagland营养液中,分别添加浓度为0.5 μmol/L、5.0 μmol/L、25.0 μmol/L Se进行处理,14 d后分析辣椒幼苗根部和地上部Cd含量。再通过辣椒全生育期盆栽试验,探究1 mg/kg Cd处理下,于辣椒开花期添加0.5 mg/kg Se处理,成熟期分析辣椒根、茎、叶及果实中Cd和Se的含量。水培试验结果表明,与单一Cd处理相比,添加5.0 μmol/L Se处理使辣椒根部和地上部生物量显著增加55.5%和95.0%,添加25.0 μmol/L Se处理使辣椒根部和地上部Cd含量显著降低48.3%和45.0%,添加25.0 μmol/L Se处理使辣椒根细胞液、根细胞壁、木质部汁液中Cd含量分别显著下降53.2%、55.7%和45.5%。土培试验结果表明,与单一Cd处理相比,添加0.5 mg/kg Se处理使辣椒茎、叶、果实中Cd含量分别显著下降54.0%、49.5%、21.2%,辣椒根、茎、果实中Se含量分别显著增加85.8%、59.2%、55.0%,且辣椒果实中Ca、Fe含量显著增加96.1%和65.9%;在Cd处理下添加Se处理可降低辣椒根向茎、茎向叶、茎向果实的Cd转运系数,同时使辣椒果实中Cd对成人和儿童的致癌与非致癌风险均下降。本研究结果说明,Se有助于缓解Cd对辣椒的生理毒害作用,同时使辣椒果实中Cd含量降低,Se含量增加,有效提升了辣椒果实品质。
Abstract:
The study was conducted to investigate the regulatory effects of selenium (Se) application on cadmium (Cd) accumulation and selenium enrichment mechanisms in pepper fruits under high cadmium geological background of Guizhou. In a hydroponic experiment, pepper seedlings were exposed to a half-strength Hoagland nutrient solution containing 10 μmol/L Cd, with additional Se treatments at concentrations of 0.5 μmol/L, 5.0 μmol/L, and 25.0 μmol/L. After 14 days, the Cd content in the roots and shoots of the pepper seedlings was analyzed. Subsequently, a pot experiment spanning the entire growth period of pepper plants was conducted. Under a treatment of 1 mg/kg Cd, selenium at a concentration of 0.5 mg/kg was applied during the flowering stage. At maturity, the contents of Cd and Se in the roots, stems, leaves, and fruits of the pepper plants were analyzed. The hydroponic experiment results showed that, compared with the Cd-only treatment, the addition of 5.0 μmol/L Se significantly increased the biomass of pepper roots and shoots by 55.5% and 95.0%, respectively. The application of 25.0 μmol/L Se significantly reduced the Cd content in roots and shoots by 48.3% and 45.0%, respectively. Furthermore, this treatment (25.0 μmol/L Se) also led to significant decreases in Cd content in the root cell sap, root cell wall, and xylem sap by 53.2%, 55.7%, and 45.5%, respectively. The soil pot experiment results demonstrated that, compared with the Cd-only treatment, the addition of 0.5 mg/kg Se significantly reduced Cd content in the stems, leaves, and fruits by 54.0%, 49.5%, and 21.2%, respectively, and significantly increased Se content in the roots, stems, and fruits by 85.8%, 59.2%, and 55.0%, respectively. Furthermore, this Se treatment also markedly enhanced the Ca and Fe content in the fruits by 96.1% and 65.9%, respectively. The addition of Se under Cd treatment reduced the translocation factors of Cd from roots to stems, stems to leaves, and stems to fruits in pepper plants. Furthermore, it decreased both the carcinogenic and non-carcinogenic risks associated with Cd in pepper fruits for adults and children. These findings indicate that Se application alleviates the physiological toxicity of Cd to pepper plants. Concurrently, it reduces Cd content and increases Se content in the fruits, thereby effectively enhancing fruit quality.

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备注/Memo

备注/Memo:
收稿日期:2025-04-28基金项目:国家自然科学基金项目(42367002);国家重点研发计划项目(2022YFD1901505) ;贵州省科技支撑计划项目[黔科合支撑(2025)一般087]作者简介:李杰(1999-),男,贵州铜仁人,硕士研究生,研究方向为土壤重金属修复。(E-mail)232100090378@gznu.cn通讯作者:杨华,(E-mail)yanghua102106@126.com
更新日期/Last Update: 2026-02-09