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Abstract
Brassinosteroids (BRs) are steroid hormones that play key roles in plant development and defense. Our goal is to harness the extensive knowledge of the Arabidopsis BR signaling network to improve productivity in crop species. This first requires identifying components of the conserved network and their function in the target species. Here, we investigated the function of SlBIM1a, the closest tomato homolog of AtBIM1, which is highly expressed in fruit. [ver mas...]
dc.contributor.authorMori, Kentaro
dc.contributor.authorLemaire-Chamley, Martine
dc.contributor.authorJorly, Joana
dc.contributor.authorCarrari, Fernando
dc.contributor.authorConte, Mariana
dc.contributor.authorAsamizu, Erika
dc.contributor.authorMizoguchi, Tsuyoshi
dc.contributor.authorEzura, Hiroshi
dc.contributor.authorRothan, Christophe
dc.date.accessioned2021-08-30T11:34:32Z
dc.date.available2021-08-30T11:34:32Z
dc.date.issued2021-02
dc.identifier.issn1460-2431
dc.identifier.otherhttps://doi.org/10.1093/jxb/eraa495
dc.identifier.urihttp://hdl.handle.net/20.500.12123/10138
dc.identifier.urihttps://academic.oup.com/jxb/article-abstract/72/4/1181/5937226
dc.description.abstractBrassinosteroids (BRs) are steroid hormones that play key roles in plant development and defense. Our goal is to harness the extensive knowledge of the Arabidopsis BR signaling network to improve productivity in crop species. This first requires identifying components of the conserved network and their function in the target species. Here, we investigated the function of SlBIM1a, the closest tomato homolog of AtBIM1, which is highly expressed in fruit. SlBIM1a-overexpressing lines displayed severe plant and fruit dwarfism, and histological characterization of different transgenic lines revealed that SlBIM1a expression negatively correlated with fruit pericarp cell size, resulting in fruit size modifications. These growth phenotypes were in contrast to those found in Arabidopsis, and this was confirmed by the reciprocal ectopic expression of SlBIM1a/b in Arabidopsis and of AtBIM1 in tomato. These results determined that BIM1 function depends more on the recipient species than on its primary sequence. Yeast two-hybrid interaction studies and transcriptomic analyses of SlBIM1a-overexpressing fruit further suggested that SlBIM1a acts through its interaction with SlBZH1 to govern the transcriptional regulation of growth-related BR target genes. Together, these results suggest that SlBIM1a is a negative regulator of pericarp cell expansion, possibly at the crossroads with auxin and light signaling.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherOxford University Presses_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceJournal of Experimental Botany 72 (4) : 1181-1197 (Febrero 2021)es_AR
dc.subjectArabidopsis thalianaes_AR
dc.subjectBrassinosteroidseng
dc.subjectBrasinoesteroideses_AR
dc.subjectFruiteng
dc.subjectFrutoes_AR
dc.subjectGrowtheng
dc.subjectCrecimientoes_AR
dc.subjectSolanum lycopersicumes_AR
dc.subjectTranscriptioneng
dc.subjectTranscripciónes_AR
dc.subject.otherTomatoeseng
dc.subject.otherTomatees_AR
dc.subject.otherCell Expansioneng
dc.subject.otherExpansión Celulares_AR
dc.titleThe conserved brassinosteroid-related transcription factor BIM1a negatively regulates fruit growth in tomatoes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenInstituto de Biotecnologíaes_AR
dc.description.filFil: Mori, Kentaro. Institut National de la Recherche Agronomique; Franciaes_AR
dc.description.filFil: Lemaire-Chamley, Martine. Institut National de la Recherche Agronomique; Franciaes_AR
dc.description.filFil: Jorly, Joana. Institut National de la Recherche Agronomique; Franciaes_AR
dc.description.filFil: Carrari, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentinaes_AR
dc.description.filFil: Carrari, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Conte, Mariana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentinaes_AR
dc.description.filFil: Conte, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Asamizu, Erika. Ryukoku University. Faculty of Agriculture. Department of Plant Life Science; Japónes_AR
dc.description.filFil: Mizoguchi, Tsuyoshi. International Christian University. Department of Natural Sciences; Japónes_AR
dc.description.filFil: Ezura, Hiroshi. University of Tsukuba. Tsukuba Plant Innovation Research Center. Faculty of Life and Environmental Sciences; Japónes_AR
dc.description.filFil: Rothan, Christophe. Institut National de la Recherche Agronomique; Franciaes_AR
dc.subtypecientifico


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