| An MYB transcription factor from Malus xiaojinensis has a potential role in iron nutrition. | |
| | |
MedLine Citation:
|
PMID: 19017117 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Regulation of iron uptake and use is critical for plant survival and growth. We isolated an MYB gene from Malus xiaojinensis named MxMYB1, which is induced under Fe-deficient conditions. Expression of MxMYB1 was upregulated by Fe starvation in the roots but not in leaves, suggesting that MxMYB1 might play a role in iron nutrition in roots. Transgenic Arabidopsis plants expressing MxMYB1 exhibited lower iron content as compared with wild type plants under both Fe-normal (40 microM) and Fe-deficient conditions (Fe omitted and Ferrozine 300 microM). However, the contents of Cu, Zn and Mn were not changed in these transgenic plants. Gene chip and real-time polymerase chain reaction analyses indicated that the expression of two Fe-related genes encoding an iron transporter AtIRT1 and an iron storage protein ferritin AtFER1 might be negatively regulated by MxMYB1 as the expression levels of these genes were lower in MxMYB1 expressing transgenic Arabidopsis plants as compared with wild type plants under both Fe-normal and Fe-deficient conditions. These results suggest that MxMYB1 may function as a negative regulator of iron uptake and storage in plants. |
| | |
Authors:
|
Jie Shen; Xuefeng Xu; Tianzhong Li; Dongmei Cao; Zhenhai Han |
Related Documents
:
|
16398117 - Reductive transformation of hexahydro-1,3,5-trinitro-1,3,5-triazine, octahydro-1,3,5,7-... 16999127 - Effect of organic co-contaminants on technetium and rhenium speciation and solubility u... 21446767 - Mechanisms and factors affecting sorption of microcystins onto natural sediments. 22102447 - Organic thin-film transistors for chemical and biological sensing. 23565117 - Organ-specific proteome analysis for identification of abiotic stress response mechanis... 11337847 - Ultrasonic waste activated sludge disintegration for improving anaerobic stabilization. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of integrative plant biology Volume: 50 ISSN: 1744-7909 ISO Abbreviation: J Integr Plant Biol Publication Date: 2008 Oct |
Date Detail:
|
Created Date: 2008-11-21 Completed Date: 2009-04-20 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101250502 Medline TA: J Integr Plant Biol Country: Australia |
Other Details:
|
Languages: eng Pagination: 1300-6 Citation Subset: IM |
Affiliation:
|
Institute for Horticultural Plants, China Agricultural University, Beijing 100094, China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Arabidopsis
/
genetics,
metabolism Gene Expression Regulation, Plant / genetics, physiology* Iron / deficiency, metabolism* Malus / genetics, metabolism* Plant Proteins / genetics, physiology* Plants, Genetically Modified / genetics, metabolism Polymerase Chain Reaction Transcription Factors / genetics, physiology* |
| Chemical | |
Reg. No./Substance:
|
0/Plant Proteins; 0/Transcription Factors; 7439-89-6/Iron |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Is chloroplast movement in tobacco plants influenced systemically after local illumination or burnin...
Next Document: Interactive effects of drought stresses and elevated CO2 concentration on photochemistry efficiency ...