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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2016.11.005
|2 doi
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|a pubmed24n0887.xml
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|a (DE-627)NLM266118453
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|a (NLM)27835849
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|a (PII)S0981-9428(16)30425-9
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Zhai, Longmei
|e verfasserin
|4 aut
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| 245 |
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|a Nitric oxide signaling is involved in the response to iron deficiency in the woody plant Malus xiaojinensis
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|c 2016
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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
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|2 rdacarrier
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|a Date Completed 10.04.2017
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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 © 2016 Elsevier Masson SAS. All rights reserved.
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|a To cope with iron (Fe) deficiency, plants have evolved a wide range of adaptive responses from changes in morphology to altered physiological responses. Recent studies have demonstrated that nitric oxide (NO) is involved in the Fe-deficiency response through hormonal signaling pathways. Here, we report that NO plays a significant role in Malus xiaojinensis, an Fe-efficient woody plant. Fe deficiency triggered significant accumulation of NO in the root system, predominantly in the outer cortical and epidermal cells of the elongation zone. The NO scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide potassium salt (cPTIO) completely arrested Fe deficiency-induced root hair formation, blocked the increase in root ferric-chelate reductase activity and in root H+ excretion, further reduced the active iron content in young leaves and roots, and prevented the upregulation of the critical Fe-related genes, FIT, MxFRO2-like, and MxIRT1. These conditions were restored under Fe deficiency by treatment with the NO donor, sodium nitroprusside (SNP). Additionally, chlorophyll content and relative expression levels of the genes chlorophyll a deoxygenase (MxCAO) and polyamine oxidase (MxPAO) were not changed significantly following Fe deficiency for 6 d; however, SNP treatment increased MxHEMA gene expression. Interestingly, the Fv/Fm ratio, the maximum quantum yield of photosystem II (PSII), decreased significantly following cPTIO treatment. We observed more severe chlorosis under Fe deficiency with cPTIO treatment for 9 d. These results strongly suggest that NO mediates a range of responses to Fe deficiency in M. xiaojinensis, from morphological changes to the regulation of physiological processes and gene expression
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|a Journal Article
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|a Adaptive responses
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|a Iron deficiency
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|a Malus xiaojinensis
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|a Nitric oxide
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|a Chlorophyll
|2 NLM
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|a 1406-65-1
|2 NLM
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| 650 |
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|a Nitric Oxide
|2 NLM
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| 650 |
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|a 31C4KY9ESH
|2 NLM
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| 650 |
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|a Iron
|2 NLM
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| 650 |
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|a E1UOL152H7
|2 NLM
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| 700 |
1 |
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|a Xiao, Dashuang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sun, Chaohua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Ting
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Han, Zhenhai
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Xinzhong
|e verfasserin
|4 aut
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| 700 |
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|a Xu, Xuefeng
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Yi
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 109(2016) vom: 01. Dez., Seite 515-524
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:109
|g year:2016
|g day:01
|g month:12
|g pages:515-524
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| 856 |
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|u http://dx.doi.org/10.1016/j.plaphy.2016.11.005
|3 Volltext
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