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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1016/j.plantsci.2013.10.002
|2 doi
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|a pubmed25n0776.xml
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|a (DE-627)NLM232989907
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|a (NLM)24268163
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|a (PII)S0168-9452(13)00211-2
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Zha, Qian
|e verfasserin
|4 aut
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|a Both immanently high active iron contents and increased root ferrous uptake in response to low iron stress contribute to the iron deficiency tolerance in Malus xiaojinensis
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 25.07.2014
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.
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|a To better understand the mechanism of low-iron stress tolerance in Malus xiaojinensis, the differences in physiological parameters and gene expression between an iron deficiency-sensitive species, Malus baccata, and an iron deficiency-tolerant species, M. xiaojinensis were investigated under low-iron (4 μM Fe) conditions. Under iron sufficient conditions, the expressions of iron uptake- and transport-related genes, i.e. FIT1, IRT1, CS1, FRD3 and NRMAP1, and the immanent leaf and root active iron contents were higher in M. xiaojinensis than those in M. baccata. However, on the first three days of low iron stress, the rhizospheric pH decreased and the root ferric chelate reductase (FCR) activity and the expression of ferrous uptake- and iron transport-related genes in the roots increased significantly only in M. xiaojinensis. Leaf chlorosis occurred on the 3rd and the 9th day after low-iron treatment in M. baccata and M. xiaojinensis, respectively. The expression of iron relocalization-related genes, such as NAS1, FRD3 and NRMAP3, increased after the 5th or 6th day of low iron stress in leaves of M. xiaojinensis, whereas the expression of NAS1, FRD3 and NRMAP3 in the leaves of M. baccata increased immediately after the onset of low iron treatment. Conclusively, the relative high active iron contents caused by the immanently active root ferrous uptake and the increased root ferrous uptake in response to low iron stress were the dominant mechanisms for the tolerance to iron deficiency in M. xiaojinensis
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a BLAST
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|a CTAB
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|a DRPD
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|a DW
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|a FCR
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|a FW
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|a HPLC
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|a IBA
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|a IRT
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|a Iron relocalization
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|a Low iron stress
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|a MS
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|a Malus baccata
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|a Malus xiaojinensis
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|a NA
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|a NCBI
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|a NRAMP
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|a National Center for Biotechnology Information
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|a Root ferrous uptake
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|a active iron content decreased rate pre day
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|a basic local alignment search tool
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|a cetyltrimethylammonium bromide
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|a dry weight
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|a ferric chelate reductase
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|a fresh weight
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|a high performance liquid chromatography
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|a indole-3-butytric acid
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|a iron transporter
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|a murashige and skoog
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|a natural resistance associated macrophage protein
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|a nicotinamide
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|a Cation Transport Proteins
|2 NLM
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|a Ferrous Compounds
|2 NLM
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|a Plant Proteins
|2 NLM
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|a Chlorophyll
|2 NLM
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|a 1406-65-1
|2 NLM
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|a Iron
|2 NLM
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|a E1UOL152H7
|2 NLM
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|a Wang, Yi
|e verfasserin
|4 aut
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1 |
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|a Zhang, Xin-Zhong
|e verfasserin
|4 aut
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| 700 |
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|a Han, Zhen-Hai
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant science : an international journal of experimental plant biology
|d 1985
|g 214(2014) vom: 19. Jan., Seite 47-56
|w (DE-627)NLM098174193
|x 1873-2259
|7 nnns
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| 773 |
1 |
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|g volume:214
|g year:2014
|g day:19
|g month:01
|g pages:47-56
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|u http://dx.doi.org/10.1016/j.plantsci.2013.10.002
|3 Volltext
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|d 214
|j 2014
|b 19
|c 01
|h 47-56
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