• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Elemental imaging of leaves from the metal hyperaccumulating plant Noccaea caerulescens shows different spatial distribution of Ni, Zn and Cd
【24h】

Elemental imaging of leaves from the metal hyperaccumulating plant Noccaea caerulescens shows different spatial distribution of Ni, Zn and Cd

机译：来自金属高压植物Noccaea的叶片的元素成像Noccaea Caerulescens显示出不同的Ni，Zn和Cd的空间分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Elemental imaging using laser ablation inductively coupled plasma mass spectrometry was performed on whole leaves of the hyperaccumulating plant Noccaea caerulescens after treatments with either Ni, Zn or Cd. These detailed elemental images reveal differences in the spatial distribution of these three elements across the leaf and provide new insights in the metal ion homeostasis within hyperaccumulating plants. In the Zn treated plants, Zn accumulated in the leaf tip while Mn was co-localised with Zn suggesting similar storage mechanisms for these two metals. These data show a Zn concentration difference of up to 13-fold higher in the distal part of the leaf. Also, there was no correlation between the S and Zn concentrations providing further evidence against S-binding ligands. In contrast, Ni was more evenly distributed while a more heterogeneous distribution of Cd was present with some high levels on leaf edges, suggesting that different storage and transport mechanisms are used for the hyperaccumulation of these two metals. These results show the importance of correct sampling when carrying out subcellular localisation studies as the hyperaccumulated elements are not necessarily homogenously distributed over the entire leaf area. The results also have great implications for biotechnological applications of N. caerulescens showing that it may be possible to use the mechanisms employed by N. caerulescens to increase the Zn concentration in nutrient poor crops without increasing the risk of accumulating other toxic elements such as Ni and Cd.
机译：使用激光烧蚀电感耦合等离子体质谱法在用Ni，Zn或Cd的治疗后对血压植物Noccaea的整个叶片进行电感耦合等离子体质谱。这些详细的元素图像揭示了叶片上这三种元素的空间分布的差异，并在高令人垂涎的植物中提供金属离子稳态的新见解。在Zn处理的植物中，Zn累积在叶尖中，而Mn与Zn共同定位，这表明这两个金属的类似储存机构。这些数据在叶子的远端部分中显示出高达13倍的Zn浓度差。而且，S和Zn浓度之间没有相关性，其提供针对S-结合配体的进一步证据。相反，Ni更均匀地分布，而在叶边缘的一些高水平存在CD的更高水平的同时存在更加异质的分布，表明不同的储存和运输机制用于这两个金属的超累积。这些结果表明，在进行亚细胞定位研究时，正确采样的重要性，因为在整个叶子区域上不一定均匀地分布在整个叶面积上。结果也对N的生物技术应用具有很大的含义。烧伤腔显示出现，可以使用N.Caerulcence所采用的机制来增加营养不良作物中的Zn浓度，而不会增加积累其他有毒元素如Ni和Ni等风险光盘。

著录项

  • 来源
    《RSC Advances》 |2016年第3期|共8页
  • 作者

    Callahan Damien L.; Hare Dominic J.; Bishop David P.; Doble Philip A.; Roessner Ute;

  • 作者单位

    Deakin Univ Sch Life &

    Environm Sci Ctr Chem &

    Biotechnol Geelong Vic 3125 Australia;

    Univ Technol Sydney Elemental Bioimaging Facil Sydney NSW 2007 Australia;

    Univ Technol Sydney Elemental Bioimaging Facil Sydney NSW 2007 Australia;

    Univ Technol Sydney Elemental Bioimaging Facil Sydney NSW 2007 Australia;

    Deakin Univ Sch BioSci Metabol Australia Parkville Vic 3010 Australia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号