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|a 10.1093/jxb/erae503
|2 doi
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|a pubmed25n1370.xml
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|a (DE-627)NLM381660370
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|a (NLM)39679950
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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 Li, Ping
|e verfasserin
|4 aut
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| 245 |
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|a The homeodomain leucine zipper protein RhHB22 promotes petal senescence by repressing ascorbic acid biosynthesis in rose
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|c 2025
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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 10.04.2025
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|a Date Revised 10.04.2025
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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 commercial re-use, please contact reprintsoup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.
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|a Premature petal senescence dramatically reduces flower quality and value. Ethylene and reactive oxygen species (ROS) are key players in accelerating rose petal senescence, but the molecular mechanism by which ethylene antagonizes ROS scavenging is not well understood. Here, we showed that ethylene reduces ascorbic acid (AsA) production, leading to the accumulation of ROS and hastening petal senescence. Ethylene treatment suppressed the expression of GDP-l-galactose phosphorylase 1 (RhGGP1), encoding the rate-controlling enzyme in AsA biosynthesis. A HOMEODOMAIN-LEUCINE ZIPPER (HD-ZIP) II transcription factor, RhHB22, directly bound to the promoter of RhGGP1 and inhibited its transcription. RhHB22 is induced by ethylene, and silencing of RhHB22 increased RhGGP1 expression and AsA production, resulting in reduced H2O2 accumulation and delayed petal senescence. Additionally, the delayed petal senescence symptoms of RhHB22-silenced plants were suppressed by silencing RhGGP1. Moreover, the expression of RhGGP1, which is suppressed by ethylene in wild-type petals, was significantly compromised in RhHB22-silenced petals. These findings uncover the transcriptional regulatory mechanism by which ethylene promotes ROS accumulation and petal senescence by inhibiting AsA biosynthesis, enhance our understanding of ethylene-induced petal senescence, and provide novel insights for improving the longevity of cut flowers
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|a Journal Article
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|a GGP1
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|a Ascorbic acid
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|a HD-ZIP
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|a ethylene
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|a petal senescence
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|a reactive oxygen species
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|a rose (Rosa hybrida)
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| 650 |
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|a Ascorbic Acid
|2 NLM
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| 650 |
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|a PQ6CK8PD0R
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 650 |
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|a Ethylenes
|2 NLM
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| 650 |
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|a ethylene
|2 NLM
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|a 91GW059KN7
|2 NLM
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| 650 |
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|a Transcription Factors
|2 NLM
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| 650 |
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|a Homeodomain Proteins
|2 NLM
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| 650 |
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|a Reactive Oxygen Species
|2 NLM
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| 700 |
1 |
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|a Qiu, Yuexuan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Rui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Bingjie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ma, Yanxing
|e verfasserin
|4 aut
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| 700 |
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|a Sun, Xiaoming
|e verfasserin
|4 aut
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| 700 |
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|a Gao, Junping
|e verfasserin
|4 aut
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| 700 |
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|a Jiang, Yunhe
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 76(2025), 6 vom: 09. Apr., Seite 1704-1717
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnas
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| 773 |
1 |
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|g volume:76
|g year:2025
|g number:6
|g day:09
|g month:04
|g pages:1704-1717
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|u http://dx.doi.org/10.1093/jxb/erae503
|3 Volltext
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|c 04
|h 1704-1717
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