MBF1s regulate ABA - dependent germination of Arabidopsis seeds
Transcriptional co-activators of the multiprotein bridging factor 1 [MBF1] control gene expression by connecting transcription factors and the basal transcription machinery. In Arabidopsis thaliana functions of MBF1 genes have been related to stress tolerance and developmental alterations. Endogenou...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2012DiMauro.pdf LINK AL EDITOR |
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| 245 | 1 | 0 | |a MBF1s regulate ABA - dependent germination of Arabidopsis seeds |
| 520 | |a Transcriptional co-activators of the multiprotein bridging factor 1 [MBF1] control gene expression by connecting transcription factors and the basal transcription machinery. In Arabidopsis thaliana functions of MBF1 genes have been related to stress tolerance and developmental alterations. Endogenous ABA plays a major role in the regulation of Arabidopsis seed dormancy and germination. Seed dormancy and ABA sensitivity are enhanced in ethylene insensitive mutants suggesting that ethylene signal transduction pathway is necessary to fully develop ABA-dependent germination. In this report we showed that a triple knock-down mutant for Arabidopsis MBF1 genes [abc-] has enhanced seed dormancy and displays hypersensitivity to exogenous ABA. In addition, higher ABA contents were detected in abc-seeds after imbibition. These evidences suggest a negative role of MBF1s genes in ABA-dependent inhibition of germination. The participation of MBF1s in ethylene signal transduction pathway is also discussed. | ||
| 653 | 0 | |a ABA | |
| 653 | 0 | |a ABA-ETHYLENE CROSS TALK | |
| 653 | 0 | |a ARABIDOPSIS THALIANA | |
| 653 | 0 | |a GERMINATION | |
| 653 | 0 | |a TRANSCRIPTIONAL CO-ACTIVATORS | |
| 653 | 0 | |a ARABIDOPSIS | |
| 700 | 1 | |a Di Mauro, María Florencia |9 69655 | |
| 700 | 1 | |a Iglesias, María José |9 68528 | |
| 700 | 1 | |a Arce, Débora Pamela |9 69656 | |
| 700 | 1 | |a Valle, Estela Marta |9 69657 | |
| 700 | 1 | |9 663 |a Benech Arnold, Roberto Luis | |
| 700 | 1 | |a Tsuda, Kenichi |9 69658 | |
| 700 | 1 | |a Yamazaki, Ken Ichi |9 69659 | |
| 700 | 1 | |a Casalongué, Claudia Anahí |9 69660 | |
| 700 | 1 | |a Godoy, Andrea Verónica |9 69661 | |
| 773 | |t Plant Signaling and Behavior |g Vol.7, no.2 (2012), p.188-192 | ||
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| 900 | |a ^tMBF1s regulate ABA-dependent germination of Arabidopsis seeds | ||
| 900 | |a ^aDi Mauro^bM.F. | ||
| 900 | |a ^aIglesias^bM.J. | ||
| 900 | |a ^aArce^bD.P. | ||
| 900 | |a ^aValle^bE.M. | ||
| 900 | |a ^aArnold^bR.B. | ||
| 900 | |a ^aTsuda^bK. | ||
| 900 | |a ^aYamazaki^bK.-I. | ||
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| 900 | |a ^aArnold^bR. B. | ||
| 900 | |a ^aTsuda^bK. | ||
| 900 | |a ^aYamazaki^bK. I. | ||
| 900 | |a ^aCasalongué^bC. A. | ||
| 900 | |a ^aGodoy^bA. V. | ||
| 900 | |a ^aDi Mauro^bM.F.^tInstituto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina | ||
| 900 | |a ^aIglesias^bM.J.^tInstituto de BiologÃa Molecular, Celular de Rosario [IBR-CONICET], Facultad de Ciencias BioquÃmicas y Farmacéuticas, Rosario, Argentina | ||
| 900 | |a ^aArce^bD.P.^tInstituto de Investigaciones Fisiológicas y Ecológicas, Facultad de AgronomÃa, Universidad de Buenos Aires, Buenos Aires, Argentina | ||
| 900 | |a ^aValle^bE.M.^tDepartment of Plant Biology, Microbial and Plant Genomics Institute, University of Minnesota, St. Paul, MN, United States | ||
| 900 | |a ^aArnold^bR.B.^tLaboratory of Environmental Molecular Biology, Graduate School of Environmental Earth Science, Hokkaido University, Kita-ku, Sapporo, Japan | ||
| 900 | |a ^aTsuda^bK. | ||
| 900 | |a ^aYamazaki^bK.-i. | ||
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| 900 | |a ^tPlant Signaling and Behavior^cPlant. Signal. Behav. | ||
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| 900 | |a ABA | ||
| 900 | |a ABA-ETHYLENE CROSS TALK | ||
| 900 | |a ARABIDOPSIS THALIANA | ||
| 900 | |a GERMINATION | ||
| 900 | |a TRANSCRIPTIONAL CO-ACTIVATORS | ||
| 900 | |a ARABIDOPSIS | ||
| 900 | |a Transcriptional co-activators of the multiprotein bridging factor 1 [MBF1] control gene expression by connecting transcription factors and the basal transcription machinery. In Arabidopsis thaliana functions of MBF1 genes have been related to stress tolerance and developmental alterations. Endogenous ABA plays a major role in the regulation of Arabidopsis seed dormancy and germination. Seed dormancy and ABA sensitivity are enhanced in ethylene insensitive mutants suggesting that ethylene signal transduction pathway is necessary to fully develop ABA-dependent germination. In this report we showed that a triple knock-down mutant for Arabidopsis MBF1 genes [abc-] has enhanced seed dormancy and displays hypersensitivity to exogenous ABA. In addition, higher ABA contents were detected in abc-seeds after imbibition. These evidences suggest a negative role of MBF1s genes in ABA-dependent inhibition of germination. The participation of MBF1s in ethylene signal transduction pathway is also discussed. | ||
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