Interactive Effects of Cadmium on Phenolic Compounds, Antioxidant Enzyme Activity and Oxidative Stress in Lupinus albus L. Grown in Vitro

IF 1.1 4区生物学 Q3 PLANT SCIENCES Russian Journal of Plant Physiology Pub Date : 2024-08-09 DOI:10.1134/s1021443724604786

S. M’rah, R. Ben Mansour, L. Guesmi, C. Chaffei-Haouari

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Abstract

Cadmium (Cd²⁺) is a toxic heavy metal that is widespread throughout the environment. It is a subject of interest to environmental scientists because of its toxicity to plants, animals, and humans. The current work aims to evaluate the effects of Cd²⁺ on the production of phenolic compounds and morphological, physiological and biochemical responses of Lupinus albus L. plants exposed to Cd²⁺ at 0, 10, 20, 50, 100, and 150 μM CdCl₂ for 7 days. Cd²⁺ induced negative effect on growth especially at the dose of 150 µM. Cd²⁺ also induced chlorosis and reduced photosynthetic activity. Besides, the metal increased the level of malondialdehyde (MDA). Under Cd²⁺ toxicity (50, 100, and 150 µM), the superoxide dismutase (SOD) and catalase (CAT) activities were increased or not significantly affected, while at 150 µM Cd²⁺ affected the activity of these enzymes. At the highest Cd²⁺ level (150 µM), proline and total polyphenol and flavonoid contents were markedly increased in leaves and roots of L. albus. Our results suggest that L. albus plants produced phenolic compounds with reducing capacity as a selective mechanism triggered by the highest activity of Cd²⁺.

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镉对白羽扇豆（Lupinus albus L.）离体生长过程中酚类化合物、抗氧化酶活性和氧化应激的交互作用

摘要镉（Cd2+）是一种有毒重金属，广泛存在于环境中。由于其对植物、动物和人类的毒性，它成为环境科学家关注的对象。本研究旨在评估 Cd2+ 对白羽扇豆（Lupinus albus L.）植物酚类化合物产量的影响，以及在 0、10、20、50、100 和 150 μM CdCl2 下暴露 7 天后的形态、生理和生化反应。Cd2+ 对生长有负面影响，尤其是在 150 µM 剂量时。Cd2+ 还会导致凋萎和光合作用活性降低。此外，金属还会增加丙二醛（MDA）的含量。在 Cd2+毒性（50、100 和 150 µM）条件下，超氧化物歧化酶（SOD）和过氧化氢酶（CAT）的活性增加或没有受到明显影响，而在 150 µM Cd2+ 条件下，这些酶的活性受到影响。在最高 Cd2+ 水平（150 µM）下，白僵菌叶片和根中的脯氨酸、总多酚和类黄酮含量明显增加。我们的研究结果表明，在 Cd2+ 活性最高的情况下，白僵菌植物产生了具有还原能力的酚类化合物，这是一种选择性机制。

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来源期刊

Russian Journal of Plant Physiology 生物-植物科学

CiteScore

4.00

自引率

14.30%

发文量

107

审稿时长

6 months

期刊介绍： Russian Journal of Plant Physiology is a leading journal in phytophysiology. It embraces the full spectrum of plant physiology and brings together the related aspects of biophysics, biochemistry, cytology, anatomy, genetics, etc. The journal publishes experimental and theoretical articles, reviews, short communications, and descriptions of new methods. Some issues cover special problems of plant physiology, thus presenting collections of articles and providing information in rapidly growing fields. The editorial board is highly interested in publishing research from all countries and accepts manuscripts in English.