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	Molecular and biochemical characterization of the fe(iii) chelate reductase gene family in arabidopsis thaliana
	Wu, HL; Li, LH; Du, J; Yuan, YX; Cheng, XD; Ling, HQ
刊名	Plant and cell physiology
	2005-09-01
卷号	46期号:9页码:1505-1514
关键词	Arabidopsis Atfros Fe(iii) chelate reductase Gene family Iron homeostasis
ISSN号	0032-0781
通讯作者	Ling, hq(hqling@genetics.ac.cn)
英文摘要	Iron chelate reductase is required for iron acquisition from soil and for metabolism in plants. in the genome of arabidopsis thaliana there are eight genes classified into the iron chelate reductase gene family (atfros) based on sequence homology with atfro2 (a ferric chelate reductase in arabidopsis). they are localized on chromosome 1 (three atfros) and chromosome 5 (five atfros) of arabidopsis and show a high level of amino acid sequence similarity to each other. an assay for ferric chelate reductase activity revealed that atfro2, atfro3, atfro4, atfro5, atfro7 and atfro8 conferred significantly increased iron reduction activity compared with the control when expressed in yeast cells, indicating that the six atfros encode iron chelate reductases functioning in iron homeostasis in arabidopsis. atfro2 displayed the highest iron reduction activity among the atfros investigated, further demonstrating that atfro2 is a major iron reductase gene in arabidopsis. aifro2 and atfro3 were mainly expressed in roots of arabidopsis, atfro5 and atfro6 in shoots and flowers, and aifro7 in cotyledons and trichomes, whereas the transcription of atfro8 was specific for leaf veins. considering the tissue-specific expression profiles of atfro genes, we suggest that atfro2 and atfro3 are two fe(iii) chelate reductases mainly functioning in iron acquisition and metabolism in arabidopsis roots, while atfro5, atfro6, atfro7 and atfro8 are required for iron homeostasis in different tissues of shoots.
WOS关键词	IRON-UPTAKE ; SACCHAROMYCES-CEREVISIAE ; METAL TRANSPORTER ; NICOTIANAMINE SYNTHASE ; PLASMA-MEMBRANE ; ESCULENTUM MILL ; HIGHER-PLANTS ; FE-DEFICIENT ; TOMATO ; ROOTS
WOS研究方向	Plant Sciences ; Cell Biology
WOS类目	Plant Sciences ; Cell Biology
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000232223100009
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2378259
专题	中国科学院大学
通讯作者	Ling, HQ
作者单位	1.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Chaoyang Dist, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Shijingshan Dis, Peoples R China
推荐引用方式 GB/T 7714	Wu, HL,Li, LH,Du, J,et al. Molecular and biochemical characterization of the fe(iii) chelate reductase gene family in arabidopsis thaliana[J]. Plant and cell physiology,2005,46(9):1505-1514.
APA	Wu, HL,Li, LH,Du, J,Yuan, YX,Cheng, XD,&Ling, HQ.(2005).Molecular and biochemical characterization of the fe(iii) chelate reductase gene family in arabidopsis thaliana.Plant and cell physiology,46(9),1505-1514.
MLA	Wu, HL,et al."Molecular and biochemical characterization of the fe(iii) chelate reductase gene family in arabidopsis thaliana".Plant and cell physiology 46.9(2005):1505-1514.

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