--- _id: '1558' abstract: - lang: eng text: CyclophilinAis a conserved peptidyl-prolyl cis-trans isomerase (PPIase) best known as the cellular receptor of the immunosuppressant cyclosporine A. Despite significant effort, evidence of developmental functions of cyclophilin A in non-plant systems has remained obscure. Mutations in a tomato (Solanum lycopersicum) cyclophilin A ortholog, DIAGEOTROPICA (DGT), have been shown to abolish the organogenesis of lateral roots; however, a mechanistic explanation of the phenotype is lacking. Here, we show that the dgt mutant lacks auxin maxima relevant to priming and specification of lateral root founder cells. DGT is expressed in shoot and root, and localizes to both the nucleus and cytoplasm during lateral root organogenesis. Mutation of ENTIRE/ IAA9, a member of the auxin-responsive Aux/IAA protein family of transcriptional repressors, partially restores the inability of dgt to initiate lateral root primordia but not the primordia outgrowth. By comparison, grafting of a wild-type scion restores the process of lateral root formation, consistent with participation of a mobile signal. Antibodies do not detect movement of the DGT protein into the dgt rootstock; however, experiments with radiolabeled auxin and an auxin-specific microelectrode demonstrate abnormal auxin fluxes. Functional studies of DGT in heterologous yeast and tobacco-leaf auxin-transport systems demonstrate that DGT negatively regulates PIN-FORMED (PIN) auxin efflux transporters by affecting their plasma membrane localization. Studies in tomato support complex effects of the dgt mutation on PIN expression level, expression domain and plasma membrane localization. Our data demonstrate that DGT regulates auxin transport in lateral root formation. author: - first_name: Maria full_name: Ivanchenko, Maria last_name: Ivanchenko - first_name: Jinsheng full_name: Zhu, Jinsheng last_name: Zhu - first_name: Bangjun full_name: Wang, Bangjun last_name: Wang - first_name: Eva full_name: Medvecka, Eva id: 298814E2-F248-11E8-B48F-1D18A9856A87 last_name: Medvecka - first_name: Yunlong full_name: Du, Yunlong last_name: Du - first_name: Elisa full_name: Azzarello, Elisa last_name: Azzarello - first_name: Stefano full_name: Mancuso, Stefano last_name: Mancuso - first_name: Molly full_name: Megraw, Molly last_name: Megraw - first_name: Sergei full_name: Filichkin, Sergei last_name: Filichkin - first_name: Joseph full_name: Dubrovsky, Joseph last_name: Dubrovsky - first_name: Jirí full_name: Friml, Jirí id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Markus full_name: Geisler, Markus last_name: Geisler citation: ama: Ivanchenko M, Zhu J, Wang B, et al. The cyclophilin a DIAGEOTROPICA gene affects auxin transport in both root and shoot to control lateral root formation. Development. 2015;142(4):712-721. doi:10.1242/dev.113225 apa: Ivanchenko, M., Zhu, J., Wang, B., Medvecka, E., Du, Y., Azzarello, E., … Geisler, M. (2015). The cyclophilin a DIAGEOTROPICA gene affects auxin transport in both root and shoot to control lateral root formation. Development. Company of Biologists. https://doi.org/10.1242/dev.113225 chicago: Ivanchenko, Maria, Jinsheng Zhu, Bangjun Wang, Eva Medvecka, Yunlong Du, Elisa Azzarello, Stefano Mancuso, et al. “The Cyclophilin a DIAGEOTROPICA Gene Affects Auxin Transport in Both Root and Shoot to Control Lateral Root Formation.” Development. Company of Biologists, 2015. https://doi.org/10.1242/dev.113225. ieee: M. Ivanchenko et al., “The cyclophilin a DIAGEOTROPICA gene affects auxin transport in both root and shoot to control lateral root formation,” Development, vol. 142, no. 4. Company of Biologists, pp. 712–721, 2015. ista: Ivanchenko M, Zhu J, Wang B, Medvecka E, Du Y, Azzarello E, Mancuso S, Megraw M, Filichkin S, Dubrovsky J, Friml J, Geisler M. 2015. The cyclophilin a DIAGEOTROPICA gene affects auxin transport in both root and shoot to control lateral root formation. Development. 142(4), 712–721. mla: Ivanchenko, Maria, et al. “The Cyclophilin a DIAGEOTROPICA Gene Affects Auxin Transport in Both Root and Shoot to Control Lateral Root Formation.” Development, vol. 142, no. 4, Company of Biologists, 2015, pp. 712–21, doi:10.1242/dev.113225. short: M. Ivanchenko, J. Zhu, B. Wang, E. Medvecka, Y. Du, E. Azzarello, S. Mancuso, M. Megraw, S. Filichkin, J. Dubrovsky, J. Friml, M. Geisler, Development 142 (2015) 712–721. date_created: 2018-12-11T11:52:42Z date_published: 2015-02-15T00:00:00Z date_updated: 2021-01-12T06:51:35Z day: '15' department: - _id: JiFr doi: 10.1242/dev.113225 intvolume: ' 142' issue: '4' language: - iso: eng month: '02' oa_version: None page: 712 - 721 publication: Development publication_status: published publisher: Company of Biologists publist_id: '5613' quality_controlled: '1' scopus_import: 1 status: public title: The cyclophilin a DIAGEOTROPICA gene affects auxin transport in both root and shoot to control lateral root formation type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 142 year: '2015' ...