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dc.contributor.author
Lucero, Leandro Exequiel
dc.contributor.author
Uberti Manassero, Nora Graciela
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Arce, Agustín Lucas
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Colombatti, Francisco
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Alemano, Sergio Gabriel
dc.contributor.author
Gonzalez, Daniel Hector
dc.date.available
2018-03-22T16:46:40Z
dc.date.issued
2015-10
dc.identifier.citation
Lucero, Leandro Exequiel; Uberti Manassero, Nora Graciela; Arce, Agustín Lucas; Colombatti, Francisco; Alemano, Sergio Gabriel; et al.; TCP15 modulates cytokinin and auxin responses during gynoecium development in Arabidopsis; Wiley Blackwell Publishing, Inc; Plant Journal; 84; 2; 10-2015; 267-282
dc.identifier.issn
0960-7412
dc.identifier.uri
http://hdl.handle.net/11336/39679
dc.description.abstract
We studied the role of Arabidopsis thaliana TCP15, a member of the TEOSINTE BRANCHED1-CYCLOIDEA-PCF (TCP) transcription factor family, in gynoecium development. Plants that express TCP15 from the 35S CaMV promoter (35S:TCP15) develop flowers with defects in carpel fusion and a reduced number of stigmatic papillae. In contrast, the expression of TCP15 fused to a repressor domain from its own promoter causes the development of outgrowths topped with stigmatic papillae from the replum. 35S:TCP15 plants show lower levels of the auxin indoleacetic acid and reduced expression of the auxin reporter DR5 and the auxin biosynthesis genes YUCCA1 and YUCCA4, suggesting that TCP15 is a repressor of auxin biosynthesis. Treatment of plants with cytokinin enhances the developmental effects of expressing TCP15 or its repressor form. In addition, treatment of a knock-out double mutant in TCP15 and the related gene TCP14 with cytokinin causes replum enlargement, increased development of outgrowths, and the induction of the auxin biosynthesis genes YUCCA1 and YUCCA4. A comparison of the phenotypes observed after cytokinin treatment of plants with altered expression levels of TCP15 and auxin biosynthesis genes suggests that TCP15 modulates gynoecium development by influencing auxin homeostasis. We propose that the correct development of the different tissues of the gynoecium requires a balance between auxin levels and cytokinin responses, and that TCP15 participates in a feedback loop that helps to adjust this balance. Significance Statement Gynoecium development is a complex process in which the auxin:cytokinin ratio is important. Here we show that a TCP transcription factor activated by cytokinin is a repressor of auxin biosynthesis genes and thus modulates gynoecium development by influencing auxin homeostasis.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Arabidopsis Thaliana
dc.subject
Auxin
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Cytokinin
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Gynoecium
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Replum
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Stigma
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Tcp Transcription Factor
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Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
TCP15 modulates cytokinin and auxin responses during gynoecium development in Arabidopsis
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-21T16:54:06Z
dc.journal.volume
84
dc.journal.number
2
dc.journal.pagination
267-282
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Lucero, Leandro Exequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
dc.description.fil
Fil: Uberti Manassero, Nora Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
dc.description.fil
Fil: Arce, Agustín Lucas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
dc.description.fil
Fil: Colombatti, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
dc.description.fil
Fil: Alemano, Sergio Gabriel. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Ciencias Naturales. Laboratorio de Fisiología Vegetal y de la Interacción Planta-microorganismo; Argentina
dc.description.fil
Fil: Gonzalez, Daniel Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
dc.journal.title
Plant Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/tpj.12992/abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/tpj.12992
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