植物中的金属运输系统

IF 21.3 1区 生物学 Q1 PLANT SCIENCES
Sheng Huang, Naoki Yamaji, Jian Feng Ma
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引用次数: 0

摘要

植物从土壤中吸收金属,包括必需的微量营养元素[铁(Fe)、铜(Cu)、锌(Zn)和锰(Mn)]以及有毒重金属镉(Cd),并在其可食用部分积累这些金属,这些部分是人类直接或间接的摄入来源。将金属从土壤中转运到不同器官和组织需要多个不同家族的转运体,但目前只有少数转运体具有完整的功能特征。转运系统(吸收、转运、分布、再分布所需的转运体及其调节)因金属和植物种类而异,取决于生理作用、每种金属的需求以及不同器官和组织的解剖结构。为了应对土壤中金属的时空波动,维持金属的平衡,植物通过在转录和/或转录后水平上调节转运体,发展出了复杂而严密的调节机制。对某些转运体的操纵成功地培育出了富含必需金属但镉积累量低的作物。更好地了解金属转运系统将有助于更好、更安全地生产作物。植物生物学年刊》第 75 卷的最终在线出版日期预计为 2024 年 5 月。修订后的预计日期请参见 http://www.annualreviews.org/page/journal/pubdates。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Metal Transport Systems in Plants.

Plants take up metals, including essential micronutrients [iron (Fe), copper (Cu), zinc (Zn), and manganese (Mn)] and the toxic heavy metal cadmium (Cd), from soil and accumulate these metals in their edible parts, which are direct and indirect intake sources for humans. Multiple transporters belonging to different families are required to transport a metal from the soil to different organs and tissues, but only a few of them have been fully functionally characterized. The transport systems (the transporters required for uptake, translocation, distribution, redistribution, and their regulation) differ with metals and plant species, depending on the physiological roles, requirements of each metal, and anatomies of different organs and tissues. To maintain metal homeostasis in response to spatiotemporal fluctuations of metals in soil, plants have developed sophisticated and tightly regulated mechanisms through the regulation of transporters at the transcriptional and/or posttranscriptional levels. The manipulation of some transporters has succeeded in generating crops rich in essential metals but low in Cd accumulation. A better understanding of metal transport systems will contribute to better and safer crop production.

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来源期刊
Annual review of plant biology
Annual review of plant biology 生物-植物科学
CiteScore
40.40
自引率
0.40%
发文量
29
期刊介绍: The Annual Review of Plant Biology is a peer-reviewed scientific journal published by Annual Reviews. It has been in publication since 1950 and covers significant developments in the field of plant biology, including biochemistry and biosynthesis, genetics, genomics and molecular biology, cell differentiation, tissue, organ and whole plant events, acclimation and adaptation, and methods and model organisms. The current volume of this journal has been converted from gated to open access through Annual Reviews' Subscribe to Open program, with all articles published under a CC BY license.
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