The tonoplast-localized OsTIP2;1 is involved in aluminum detoxification in rice

文献类型： 外文期刊

第一作者： Zhang, Weiyin

作者： Zhang, Weiyin;Feng, Yimeng;Liang, Bixia;Li, Chune;Li, Qian;Zeng, Zhenshun;Ji, Xiyue;Wang, Yuqi;Zhang, Weiyin;Yang, Shaohua;Liu, Jiping;Wang, Yuqi;Liu, Jiping

作者机构：

关键词： Aquaporins; Tonoplast intrinsic proteins (TIP); Aluminum (Al) tolerance; Rice

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.7； 五年影响因子：6.4 ）

ISSN： 0981-9428

年卷期： 2024 年 215 卷

页码：

收录情况： SCI

摘要： Aluminum (Al) stress is a significant issue in acidic soils, severely affecting crop growth and yield. Rice is notably resilient to Al toxicity, yet the internal tolerance mechanisms remain inadequately addressed. Here, we examined the role of OsTIP2;1, a tonoplast-bound intrinsic protein (TIP), in rice's internal Al detoxification. Our findings reveal that OsTIP2;1 expression was quickly and explicitly activated by Al ions in roots but not in shoots. The OsTIP2;1-GFP protein localizes to the tonoplast in plant and yeast cells. Non-functional ostip2;1 rice mutants were more vulnerable to Al toxicity. In the roots, the ostip2;1 mutants exhibited considerably lower levels of Al in the cell sap, primarily the vacuolar contents, than in the wild-type plant. Moreover, the ostip2;1 mutants showed reduced Al accumulation in the roots but increased translocation to the shoots. Heterologous expression of tonoplast-localized OsTIP2;1 in yeast led to enhanced Al tolerance, suggesting that OsTIP2;1 facilitates Al sequestration to the vacuole. These findings indicate that OsTIP2;1 mediates internal detoxification by transporting Al into the vacuole in the root and restricting its transport to above-ground tissues, thus contributing to Al resistance in rice.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序