数字农科院2.0

Heterologous expression of Carex rigescens PDC1 enhances salt tolerance in transgenic Arabidopsis thaliana seedlings

文献类型： 外文期刊

作者： Huiting Cui;Chengze Ma;Luyu Wang;Mingna Li;Kun Zhang;Yue Li;Qiannan Hu;Yan Sun

作者机构：

关键词： Carex rigescens;PDC1;Salt stress;Transgenic Arabidopsis

期刊名称： Plant Science

ISSN： 1873-2259

年卷期： 2025 年 362 卷

页码：

收录情况： SCIE（2025版）

摘要： Salt stress severely impacts plant growth, emphasizing the critical need to understand plant salt tolerance for breeding and improvement. Studies on various plants have shown that treatment with exogenous acetic acid significantly improves salt tolerance and drought resistance. However, the relationship between endogenous acetic acid levels and salt stress response remains unclear. Pyruvate decarboxylase (PDC) is a pivotal enzyme in acetic acid synthesis, and its role in salt stress response is not fully elucidated. Toward this end, we investigated the role of a PDC gene, CrPDC1, in Carex rigescens, a strongly salt tolerant species of turfgrass that widely distributed in northern China. CrPDC1 expression was significantly up-regulated in roots under salt treatment, and Arabidopsis thaliana plants overexpressing CrPDC1 had a significantly higher germination rate, lower malondialdehyde (MDA) content, higher antioxidant enzyme and PDC activity, and higher expression levels of salt stress-related genes under high-salinity conditions compared with wild-type plants, suggesting that CrPDC1 positively regulates salt tolerance. These findings underscore the role of PDCs in enhancing salt tolerance and suggest their potential for improving stress resilience in turfgrasses and other plants.

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