Effects of Magnesium Addition on Yield, Quality and Cadmium Accumulation in Pepper Under Cadmium Stress
- 1College of Life Sciences, , Ganzhou 341000, China; (A.W.); (Z.R.); (G.L.); (F.Y.)
- 2Harbin Ecological Environment Monitoring Center of Heilongjiang Province, Harbin 150076, China;
- 3School of Geography and Environmental Engineering, , Ganzhou 341000, China;
Abstract
To investigate the effects of exogenous magnesium (Mg) addition on cadmium (Cd) accumulation, yield, and quality of pepper under Cd stress, two pepper cultivars, Hongtianhu 101 and Yuefeng 750, which differ greatly in their Cd accumulation capacities, were used as experimental materials. Based on Hoagland nutrient solution, three treatments were established: Cd treatment, Cd + Mg treatment, and a control treatment without Cd or Mg addition (CK). A seedling-stage hydroponic experiment and a pot experiment from the seedling stage to the mature stage were conducted using Hoagland nutrient solutions with different formulations. Indicators including dry matter production, yield, fruit quality, and Cd content in different organs of pepper were systematically determined. The results showed that, compared with the CK treatment, Cd treatment significantly decreased the photosynthetic pigment content, total dry matter weight, and yield at the mature stage, while significantly increasing leaf oxidative stress, Cd accumulation in different organs, and total Cd accumulation, accompanied by reduced fruit quality. However, Mg addition under Cd stress (Cd + Mg treatment) effectively increased the photosynthetic pigment contents and total dry matter weight at the mature stage, resulting in a significant increase in yield of 49.7–54.9%. Meanwhile, Mg addition reduced Cd accumulation in all plant organs, thereby significantly decreasing the total Cd accumulation by 17.2%–58.0%, markedly alleviating the degree of leaf oxidative stress, and improving pepper quality. Nevertheless, none of the above indicators fully recovered to the levels observed in the CK treatment. In summary, Mg addition under Cd stress alleviated the adverse effects of Cd stress in pepper plants, as indicated by improved growth performance, reduced Cd accumulation, and enhanced fruit quality. This study provides a theoretical basis for the production of high-yield and high-quality peppers in Cd-contaminated areas.
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BibTeX
@article{wang2026effects,
title = {{Effects of Magnesium Addition on Yield, Quality and Cadmium Accumulation in Pepper Under Cadmium Stress}},
author = {Ahua Wang and Fuyuan Ye and Xiaodan Wang and Zijing Wang and Zhaoyan Ren and Guidong Liu and Fengxian Yao and Chen Cheng},
journal = {Plants (Basel, Switzerland)},
year = {2026},
month = oct,
doi = {10.3390/plants15203109},
url = {https://europepmc.org/article/PMC/PMC13708728},
note = {CC BY},
}
RIS
TY - JOUR
TI - Effects of Magnesium Addition on Yield, Quality and Cadmium Accumulation in Pepper Under Cadmium Stress
AU - Ahua Wang
AU - Fuyuan Ye
AU - Xiaodan Wang
AU - Zijing Wang
AU - Zhaoyan Ren
AU - Guidong Liu
AU - Fengxian Yao
AU - Chen Cheng
PY - 2026
DA - 2026/10/01
JO - Plants (Basel, Switzerland)
DO - 10.3390/plants15203109
UR - https://europepmc.org/article/PMC/PMC13708728
AB - To investigate the effects of exogenous magnesium (Mg) addition on cadmium (Cd) accumulation, yield, and quality of pepper under Cd stress, two pepper cultivars, Hongtianhu 101 and Yuefeng 750, which differ greatly in their Cd accumulation capacities, were used as experimental materials. Based on Hoagland nutrient solution, three treatments were established: Cd treatment, Cd + Mg treatment, and a control treatment without Cd or Mg addition (CK). A seedling-stage hydroponic experiment and a pot experiment from the seedling stage to the mature stage were conducted using Hoagland nutrient solutions with different formulations. Indicators including dry matter production, yield, fruit quality, and Cd content in different organs of pepper were systematically determined. The results showed that, compared with the CK treatment, Cd treatment significantly decreased the photosynthetic pigment content, total dry matter weight, and yield at the mature stage, while significantly increasing leaf oxidative stress, Cd accumulation in different organs, and total Cd accumulation, accompanied by reduced fruit quality. However, Mg addition under Cd stress (Cd + Mg treatment) effectively increased the photosynthetic pigment contents and total dry matter weight at the mature stage, resulting in a significant increase in yield of 49.7–54.9%. Meanwhile, Mg addition reduced Cd accumulation in all plant organs, thereby significantly decreasing the total Cd accumulation by 17.2%–58.0%, markedly alleviating the degree of leaf oxidative stress, and improving pepper quality. Nevertheless, none of the above indicators fully recovered to the levels observed in the CK treatment. In summary, Mg addition under Cd stress alleviated the adverse effects of Cd stress in pepper plants, as indicated by improved growth performance, reduced Cd accumulation, and enhanced fruit quality. This study provides a theoretical basis for the production of high-yield and high-quality peppers in Cd-contaminated areas.
SN - 2223-7747
ER -