LAPSE:2023.36524
Published Article
LAPSE:2023.36524
Effects of Varied Forms of Arsenic Stress on Seedling Growth and Arsenic Distribution in Honeysuckle Plants
Xin Yuan, Juntong Zhou, Congnan Peng, Jiaqi Qiao, Shengqi Xia, Yilin Fan, Li Yao, Kailin Qi, Dongliang Chen, Zhiying Guo, Xiaolong Gan, Yaxuan Sun, Xueling Dai, Liangyu Lv, Yizhi Ji, Qing Huo
August 3, 2023
At present, soil arsenic contamination is one of the prominent environmental problems. The arsenic concentration in honeysuckle exceeds the standard levels, thus affecting the quality of traditional Chinese medicine. In this study, the hydroponic method was employed to explore the effect of organic arsenic (dimethyl arsenic) and trivalent inorganic arsenic (NaAsO2) on the growth of honeysuckle plants. The study demonstrated that low concentrations of inorganic arsenic (10−20 mg/L) and 10−50 mg/L organic arsenic had a stimulating effect on the growth of honeysuckle plants. The activities of antioxidant enzymes (peroxidase and catalase) increased correspondingly. However, the antioxidant system in honeysuckle plants was damaged under high concentrations of inorganic arsenic (20−40 mg/L) and 50−70 mg/L organic arsenic. On exposure to 30 mg/L NaAsO2 or 50 mg/L dimethyl arsenic acid for 10 days, the activities of peroxidase and catalase, as well as the malondialdehyde content, increased with prolonged exposure. The micro X-ray fluorescence analysis revealed that the accumulated arsenic in the roots was transported from the central vascular cylinders to the outer part of the root with the increase in concentration and exposure duration of inorganic arsenic. However, organic arsenic stress did not result in significant variations in the distribution of arsenic with increasing concentrations of arsenic. The arsenic element was predominantly located in the middle woody part of the root. The distributions of arsenic in the stems and leaves, in terms of organic and inorganic arsenic stresses, were similar, with accumulation primarily in the cortex of the stem and veins of the leaves. As a commonly used bulk traditional Chinese medicine, honeysuckle has a wide range of product quality issues. Hence, exploring the absorption, distribution, and transport trends of heavy metals such as arsenic in the plant body is of great significance for scientifically evaluating the impact of heavy metal pollution on the quality of medicinal materials and exploring ways to reduce the accumulation of heavy metals in the medicinal parts of plants.
Keywords
arsenic stress, honeysuckle, micro X-ray fluorescence, physiological indicators
Subject
Suggested Citation
Yuan X, Zhou J, Peng C, Qiao J, Xia S, Fan Y, Yao L, Qi K, Chen D, Guo Z, Gan X, Sun Y, Dai X, Lv L, Ji Y, Huo Q. Effects of Varied Forms of Arsenic Stress on Seedling Growth and Arsenic Distribution in Honeysuckle Plants. (2023). LAPSE:2023.36524
Author Affiliations
Yuan X: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Zhou J: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Peng C: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Qiao J: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Xia S: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Fan Y: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Yao L: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Qi K: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Chen D: Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Guo Z: Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Gan X: Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Sun Y: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Dai X: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Lv L: Biological Science and Medical Engineering College, Donghua University, Shanghai 201620, China
Ji Y: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Huo Q: Biochemical Engineering College, Beijing Union University, Beijing 100023, China
Journal Name
Processes
Volume
11
Issue
7
First Page
1980
Year
2023
Publication Date
2023-06-30
Published Version
ISSN
2227-9717
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PII: pr11071980, Publication Type: Journal Article
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LAPSE:2023.36524
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doi:10.3390/pr11071980
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Aug 3, 2023
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Calvin Tsay
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