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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erz357
|2 doi
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|a pubmed24n0999.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Wei, Shan-Shan
|e verfasserin
|4 aut
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|a Arabidopsis mtHSC70-1 plays important roles in the establishment of COX-dependent respiration and redox homeostasis
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|c 2019
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 17.08.2020
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|a Date Revised 17.08.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com.
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|a The 70 kDa heat shock proteins function as molecular chaperones and are involved in diverse cellular processes. However, the functions of the plant mitochondrial HSP70s (mtHSC70s) remain unclear. Severe growth defects were observed in the Arabidopsis thaliana mtHSC70-1 knockout lines, mthsc70-1a and mthsc70-1b. Conversely, the introduction of the mtHSC70-1 gene into the mthsc70-1a background fully reversed the phenotypes, indicating that mtHSC70-1 is essential for plant growth. The loss of mtHSC70-1 functions resulted in abnormal mitochondria and alterations to respiration because of an inhibition of the cytochrome c oxidase (COX) pathway and the activation of the alternative respiratory pathway. Defects in COX assembly were observed in the mtHSC70-1 knockout lines, leading to decreased COX activity. The mtHSC70-1 knockout plants have increased levels of reactive oxygen species (ROS). The introduction of the Mn-superoxide dismutase 1 (MSD1) or the catalase 1 (CAT1) gene into the mthsc70-1a plants decreased ROS levels, reduced the expression of alternative oxidase, and partially rescued growth. Taken together, our data suggest that mtHSC70-1 plays important roles in the establishment of COX-dependent respiration
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Arabidopsis
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|a cytochrome c oxidase
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|a growth and development
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|a mtHSC70-1
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|a reactive oxygen species
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|a respiratory complex IV
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|a AT5G02500 protein, Arabidopsis
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|a Arabidopsis Proteins
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|a HSP70 Heat-Shock Proteins
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|a Reactive Oxygen Species
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|a CAT1 protein, Arabidopsis
|2 NLM
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|a EC 1.11.1.6
|2 NLM
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|a Catalase
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|a EC 1.11.1.6
|2 NLM
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|a Superoxide Dismutase
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|a EC 1.15.1.1
|2 NLM
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|a Electron Transport Complex IV
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|a EC 1.9.3.1
|2 NLM
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| 700 |
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|a Niu, Wei-Tao
|e verfasserin
|4 aut
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|a Zhai, Xiao-Ting
|e verfasserin
|4 aut
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|a Liang, Wei-Qian
|e verfasserin
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|a Xu, Meng
|e verfasserin
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|a Fan, Xiao
|e verfasserin
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|a Lv, Ting-Ting
|e verfasserin
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|a Xu, Wen-Yan
|e verfasserin
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|a Bai, Jiao-Teng
|e verfasserin
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|a Jia, Ning
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|a Li, Bing
|e verfasserin
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 70(2019), 20 vom: 24. Okt., Seite 5575-5590
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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|g volume:70
|g year:2019
|g number:20
|g day:24
|g month:10
|g pages:5575-5590
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|u http://dx.doi.org/10.1093/jxb/erz357
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