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240114s2024 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erae006
|2 doi
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|a pubmed25n1222.xml
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|a (DE-627)NLM366964291
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|a (NLM)38205848
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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 Lu, Mingyue
|e verfasserin
|4 aut
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|a Transcription factors NtNAC028 and NtNAC080 form heterodimers to regulate jasmonic acid biosynthesis during leaf senescence in Nicotiana tabacum
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|c 2024
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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 16.04.2024
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|a Date Revised 23.10.2024
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2024. 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 Plant senescence, as a highly integrated developmental stage, involves functional degeneration and nutrient redistribution. NAM/ATAF1/CUC (NAC) transcription factors orchestrate various senescence-related signals and mediate the fine-tuning underlying plant senescence. Previous data revealed that knockout of either NtNAC028 or NtNAC080 leads to delayed leaf senescence in tobacco (Nicotiana tabacum), which implies that NtNAC028 and NtNAC080 play respective roles in the regulation of leaf senescence, although they share 91.87% identity with each other. However, the mechanism underlying NtNAC028- and NtNAC080-regulated leaf senescence remains obscure. Here, we determined that NtNAC028 and NtNAC080 activate a putative jasmonic acid (JA) biosynthetic gene, NtLOX3, and enhance the JA level in vivo. We found that NtNAC028 and NtNAC080 interact with each other and themselves through their NA-terminal region. Remarkably, only the dimerization between NtNAC028 and NtNAC080 stimulated the transcriptional activation activity, but not the DNA binding activity of this heterodimer on NtLOX3. Metabolome analysis indicated that overexpression of either NtNAC028 or NtNAC080 augments both biosynthesis and degradation of nicotine in the senescent stages. Thus, we conclude that NtNAC028 cooperates with NtNAC080 and forms a heterodimer to enhance NtLOX3 expression and JA biosynthesis to trigger the onset of leaf senescence and impact secondary metabolism in tobacco
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|a Journal Article
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|a Nicotiana tabacum
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|a Cooperation of NACs
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|a NAC transcription factors
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|a jasmonic acid
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|a leaf senescence
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|a nicotine
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| 650 |
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|a Transcription Factors
|2 NLM
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| 650 |
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|a jasmonic acid
|2 NLM
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| 650 |
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|a 6RI5N05OWW
|2 NLM
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| 650 |
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|a Cyclopentanes
|2 NLM
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|a Oxylipins
|2 NLM
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| 700 |
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|a Fu, Boyang
|e verfasserin
|4 aut
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|a Meng, Xiao
|e verfasserin
|4 aut
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|a Jia, Tiantian
|e verfasserin
|4 aut
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| 700 |
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|a Lu, Xiaoyue
|e verfasserin
|4 aut
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|a Yang, Chaosha
|e verfasserin
|4 aut
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|a Li, Ke
|e verfasserin
|4 aut
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|a Yin, Pengcheng
|e verfasserin
|4 aut
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|a Guo, Yongfeng
|e verfasserin
|4 aut
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|a Li, Wei
|e verfasserin
|4 aut
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|a Chi, Jina
|e verfasserin
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|a Wang, Geng
|e verfasserin
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|a Zhou, Chunjiang
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 75(2024), 8 vom: 15. Apr., Seite 2351-2371
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnas
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| 773 |
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|g volume:75
|g year:2024
|g number:8
|g day:15
|g month:04
|g pages:2351-2371
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|u http://dx.doi.org/10.1093/jxb/erae006
|3 Volltext
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|d 75
|j 2024
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|h 2351-2371
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