Iron homeostasis in plants - a brief overview.

Iron homeostasis in plants - a brief overview.
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DOI:
10.1039/c7mt00136c
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发表时间:
2017-07-19
期刊:
Metallomics : integrated biometal science
影响因子:
--
通讯作者:
Rodríguez-Celma J
Rodríguez-Celma J
中科院分区:
其他
文献类型:
--
作者:
Connorton JM;Balk J;Rodríguez-Celma J

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铁在生物化学中起着至关重要的作用,是植物和人类必不可少的微量营养素。该领域的最新进展使人们更好地了解植物中的铁稳态,并有助于生产高铁作物以改善人类营养。铁在生物化学中起着至关重要的作用,是植物和人类必不可少的微量营养素。尽管在地壳中储量丰富,但通常不会以植物容易获得的形式找到它。因此,它们必须感知环境并与之相互作用,并进化出两种不同的分子策略来从根中吸收铁。一旦进入体内,铁就与络合剂络合,分布到下沉组织中,在那里它主要用于生产酶辅因子或电子传输链的组成部分。铁的摄取、分布和代谢过程在转录和转录后水平上受到严格的调控机制的监督,以避免铁浓度积累到有毒过量。铁也被装载到种子中,储存在液泡或铁蛋白中。这对人类的营养很重要,因为种子是许多作物物种的可食用部分。因此,增加种子和其他组织中的铁是传统育种和生物技术方法生物强化努力的主要目标。
Iron plays a crucial role in biochemistry and is an essential micronutrient for plants and humans alike. Recent progress in the field has led to a better understanding of iron homeostasis in plants, and aided the production of high iron crops for improved human nutrition. Iron plays a crucial role in biochemistry and is an essential micronutrient for plants and humans alike. Although plentiful in the Earth's crust it is not usually found in a form readily accessible for plants to use. They must therefore sense and interact with their environment, and have evolved two different molecular strategies to take up iron in the root. Once inside, iron is complexed with chelators and distributed to sink tissues where it is used predominantly in the production of enzyme cofactors or components of electron transport chains. The processes of iron uptake, distribution and metabolism are overseen by tight regulatory mechanisms, at the transcriptional and post-transcriptional level, to avoid iron concentrations building to toxic excess. Iron is also loaded into seeds, where it is stored in vacuoles or in ferritin. This is important for human nutrition as seeds form the edible parts of many crop species. As such, increasing iron in seeds and other tissues is a major goal for biofortification efforts by both traditional breeding and biotechnological approaches.
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