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- W2151876199 abstract "Abstract Several genes belonging to the MADS box transcription factor family have been shown to be involved in the transition from vegetative to reproductive growth. The Petunia hybrida MADS box gene UNSHAVEN (UNS) shares sequence similarity with the Arabidopsis thaliana flowering gene SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1, is expressed in vegetative tissues, and is downregulated upon floral initiation and the formation of floral meristems. To understand the role of UNS in the flowering process, knockout mutants were identified and UNS was expressed ectopically in petunia and Arabidopsis. No phenotype was observed in petunia plants in which UNS was disrupted by transposon insertion, indicating that its function is redundant. Constitutive expression of UNS leads to an acceleration of flowering and to the unshaven floral phenotype, which is characterized by ectopic trichome formation on floral organs and conversion of petals into organs with leaf-like features. The same floral phenotype, accompanied by a delay in flowering, was obtained when a truncated version of UNS, lacking the MADS box domain, was introduced. We demonstrated that the truncated protein is not translocated to the nucleus. Using the overexpression approach with both the full-length and the nonfunctional truncated UNS protein, we could distinguish between phenotypic alterations because of a dominant-negative action of the protein and because of its native function in promoting floral transition." @default.
- W2151876199 created "2016-06-24" @default.
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- W2151876199 date "2004-06-01" @default.
- W2151876199 modified "2023-10-18" @default.
- W2151876199 title "Ectopic Expression of the Petunia MADS Box Gene <i>UNSHAVEN</i> Accelerates Flowering and Confers Leaf-Like Characteristics to Floral Organs in a Dominant-Negative Manner[W]" @default.
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- W2151876199 doi "https://doi.org/10.1105/tpc.019679" @default.
- W2151876199 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/490041" @default.
- W2151876199 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15155884" @default.
- W2151876199 hasPublicationYear "2004" @default.
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