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|a 10.1093/jxb/erad242
|2 doi
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|a pubmed24n1195.xml
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|a (DE-627)NLM358702402
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|a (NLM)37368909
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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 |
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|a Lu, Han
|e verfasserin
|4 aut
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|a The extensin protein SAE1 plays a role in leaf senescence and is targeted by the ubiquitin ligase SINA4 in tomato
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|c 2023
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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 03.10.2023
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|a Date Revised 12.10.2023
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|a published: Print
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|a CommentIn: J Exp Bot. 2023 Sep 29;74(18):5419-5421. - PMID 37773263
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|a Citation Status MEDLINE
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|a © The Author(s) 2023. 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 Extensins are hydroxyproline-rich glycoproteins and generally play a structural role in cell wall integrity. In this study, we determined a novel role of tomato (Solanum lycopersicum) SENESCENCE-ASSOCIATED EXTENSIN1 (SAE1) in leaf senescence. Both gain- and loss-of-function analyses suggest that SAE1 plays a positive role in leaf senescence in tomato. Transgenic plants overexpressing SAE1 (SAE1-OX) exhibited premature leaf senescence and enhanced dark-induced senescence, whereas SAE1 knockout (SAE1-KO) plants displayed delayed development-dependent and dark-induced leaf senescence. Heterologous overexpression of SlSAE1 in Arabidopsis also led to premature leaf senescence and enhanced dark-induced senescence. In addition, the SAE1 protein was found to interact with the tomato ubiquitin ligase SlSINA4, and SlSINA4 promoted SAE1 degradation in a ligase-dependent manner when co-expressed in Nicotiana benthamiana leaves, suggesting that SlSINA4 controls SAE1 protein levels via the ubiquitin-proteasome pathway. Introduction of an SlSINA4-overexpression construct into the SAE1-OX tomato plants consistently completely eliminated accumulation of the SAE1 protein and suppressed the phenotypes conferred by overexpression of SAE1. Taken together, our results suggest that the tomato extensin SAE1 plays a positive role in leaf senescence and is regulated by the ubiquitin ligase SINA4
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Solanum lycopersicum
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|a CRISPR-Cas9
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|a extensin
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|a leaf senescence
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|a tomato
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|a ubiquitin ligase
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|a ubiquitination
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|a Ubiquitin
|2 NLM
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|a Ligases
|2 NLM
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|a EC 6.-
|2 NLM
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| 700 |
1 |
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|a Niu, Xiangli
|e verfasserin
|4 aut
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| 700 |
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|a Fan, Youhong
|e verfasserin
|4 aut
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| 700 |
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|a Yuan, Yulin
|e verfasserin
|4 aut
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| 700 |
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|a Huang, Li
|e verfasserin
|4 aut
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| 700 |
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|a Zhao, Bingyu
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Yongsheng
|e verfasserin
|4 aut
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| 700 |
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|a Xiao, Fangming
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 74(2023), 18 vom: 29. Sept., Seite 5635-5652
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:74
|g year:2023
|g number:18
|g day:29
|g month:09
|g pages:5635-5652
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|u http://dx.doi.org/10.1093/jxb/erad242
|3 Volltext
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