数字农科院2.0

Use of silicon to protect tomato (Solanum lycopersicum L.) seedlings from low-calcium stress-derived oxidative damage

文献类型： 外文期刊

作者： Zhaozhuang Li;Ning Jin;Li Jin;Shuya Wang;Yansu Li;Mintao Sun;Shuchao Huang;Yandong Xie;Xin Meng;Zhiqi Xu;Wei Li;Xiting Yang;Wenhao Zhou;Jian Lyu;Jihua Yu

作者机构：

关键词： Ascorbate-glutathione cycle;Fertilization;Low-calcium stress;Silicon;Tomato

期刊名称： Scientia Horticulturae

ISSN： 0304-4238

年卷期： 2025 年 349 卷

页码：

收录情况： SCIE（2025版）

摘要： Given the environmental consequences of excessive chemical fertilizer use in agricultural production, it is imperative to identify alternative strategies to address nutrient deficiencies. Silicon plays a pivotal role in alleviating abiotic stress in plants and enhancing nutrient uptake; however, it remains unclear whether silicon can mitigate the effects of calcium deficiency in tomato seedlings. To address this issue, tomato seedlings cultured under low calcium conditions (0.1 mmol/L Ca2+) were treated with silicon via direct application to the roots and leaves. The silicon treatment significantly reduced the superoxide anion content in tomato plants by 14.25 %–27.34 % and significantly increased the total polyphenol content by 2.9 %–13.5 % in all tomato organs under low-calcium stress conditions. Moreover, the application of silicon to the roots increased the tomato soluble sugar and protein content, and the application of silicon to the leaves significantly increased Superoxide dismutase activity. The application of silicon to both the leaves and roots alleviated the oxidative damage caused by calcium deficiency. These events were accompanied by activation of the ascorbic acid-glutathione pathway, osmotic regulators, and polyphenol accumulation. The results elucidate the effects of silica fertilization on tomato production, including its potential to mitigate the effects of low-calcium stress.

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