Scholarlink

Abstract <p>Multidrug and toxic compound excretion (MATE) protein widely exists in the biological world, as a part of the secondary transport system to regulate the concentration of chemical ions or other small cell molecules in response to environmental changes. Iron is one of the important micronutrient elements in plants, which is very important for plant growth and development. Our previous study showed that <i>ELS1</i> (<i>Early Leaf Senescence 1</i>) encodes a MATE protein, whose overexpression can lead to premature of leaf senescence, indicating that MATE protein ELS1 may be involved in nutrient reassignment during senescence. However, the exact mechanism remains to be elucidated. In this study, we observed that the deletion mutant <i>els1-1</i> had a higher content of irons than the wild type. Measurement of chlorophyll content after dark induction revealed that <i>els1-1</i> senescence was slower. The senescence of overexpressing mutant <i>els1-D</i> can be delayed by exogenous iron application, and GUS staining showed that iron could induce the expression of <i>ELS1</i>. In addition, subcellular analysis revealed that ELS1 is localized in the endomembrane system of cells. In accordance with the above results, we infer that ELS1 may be involved in the transportation of intracellular iron ions and maintain the balance of iron homeostasis.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

AtELS1 Plays an Important Role in Keeping the Balance of Iron Homeostasis in Arabidopsis

  • 期刊论文

  • 发表日期：

    2025年2月1日

查看全文
  • Q. Zhang,
  • K. Mao,
  • T. Guo,
  • W. Li,
  • J. Duan,
  • C. Mu

摘要

Abstract

Multidrug and toxic compound excretion (MATE) protein widely exists in the biological world, as a part of the secondary transport system to regulate the concentration of chemical ions or other small cell molecules in response to environmental changes. Iron is one of the important micronutrient elements in plants, which is very important for plant growth and development. Our previous study showed that ELS1 (Early Leaf Senescence 1) encodes a MATE protein, whose overexpression can lead to premature of leaf senescence, indicating that MATE protein ELS1 may be involved in nutrient reassignment during senescence. However, the exact mechanism remains to be elucidated. In this study, we observed that the deletion mutant els1-1 had a higher content of irons than the wild type. Measurement of chlorophyll content after dark induction revealed that els1-1 senescence was slower. The senescence of overexpressing mutant els1-D can be delayed by exogenous iron application, and GUS staining showed that iron could induce the expression of ELS1. In addition, subcellular analysis revealed that ELS1 is localized in the endomembrane system of cells. In accordance with the above results, we infer that ELS1 may be involved in the transportation of intracellular iron ions and maintain the balance of iron homeostasis.