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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erad486
|2 doi
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|a pubmed24n1355.xml
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|a eng
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|a Segura, María
|e verfasserin
|4 aut
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|a An miR164-resistant mutation in the transcription factor gene CpCUC2B enhances carpel arrest and ectopic boundary specification in Cucurbita pepo flower development
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|c 2024
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|a Text
|b txt
|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 28.03.2024
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|a Date Revised 29.03.2024
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|a published: Print
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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.
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|a The sex determination process in cucurbits involves the control of stamen or carpel development during the specification of male or female flowers from a bisexual floral meristem, a function coordinated by ethylene. A gain-of-function mutation in the miR164-binding site of CpCUC2B, ortholog of the Arabidopsis transcription factor gene CUC2, not only produced ectopic floral meristems and organs, but also suppressed the development of carpels and promoted the development of stamens. The cuc2b mutation induced the transcription of CpCUC2B in the apical shoots of plants after female flowering but repressed other CUC genes regulated by miR164, suggesting a conserved functional redundancy of these genes in the development of squash flowers. The synergistic androecious phenotype of the double mutant between cuc2b and etr2b, an ethylene-insensitive mutation that enhances the production of male flowers, demonstrated that CpCUC2B arrests the development of carpels independently of ethylene and CpWIP1B. The transcriptional regulation of CpCUC1, CpCUC2, and ethylene genes in cuc2b and ethylene mutants also confirms this conclusion. However, the epistasis of cuc2b over aco1a, a mutation that suppresses stamen arrest in female flowers, and the down-regulation of CpACS27A in cuc2b female apical shoots, indicated that CpCUC2B promotes stamen development by suppressing the late ethylene production
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|a Journal Article
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|a CUC2
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|a Cucurbita pepo
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|a Boundary specification
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|a ethylene
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|a female flowering
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|a flower meristem
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|a ethylene
|2 NLM
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|2 NLM
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|a Ethylenes
|2 NLM
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|a Transcription Factors
|2 NLM
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|a García, Alicia
|e verfasserin
|4 aut
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| 700 |
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|a Gamarra, Germán
|e verfasserin
|4 aut
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| 700 |
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|a Benítez, Álvaro
|e verfasserin
|4 aut
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| 700 |
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|a Iglesias-Moya, Jessica
|e verfasserin
|4 aut
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| 700 |
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|a Martínez, Cecilia
|e verfasserin
|4 aut
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| 700 |
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|a Jamilena, Manuel
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 75(2024), 7 vom: 27. März, Seite 1948-1966
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:75
|g year:2024
|g number:7
|g day:27
|g month:03
|g pages:1948-1966
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|u http://dx.doi.org/10.1093/jxb/erad486
|3 Volltext
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