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Descripción
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| Plants grow continuously and have high regenerative capacities. Both developmental mechanisms require the formation of new organs and tissues from organ founder cells (FC). Specification of FC is, therefore, crucial for plant postembryonic growth and survival. To investigate organogenesis and specification of FC we used as model system the formation of lateral roots (LR) in Arabidopsis thaliana. Out of an ethyl methanesulfonate screen, we identified a heritable mutation with altered postembryonic organogenesis, which we named potent. Although, stem cell and tissue specification is not affected in the main root of potent. New stem cells are not specified during LR formation, as indicated by lineage analyses and stem cell specification markers. In potent, many pericycle cells change their identity becoming FCs. These FCs, although are normally arrested in subsequent development, can be stimulated to undergo organogenesis by auxin treatment that results in overproduction of LRs. Furthermore, we analyzed the effect of this mutation during regeneration of roots from leaves, and also found abnormal over-reprograming of cells which were, in turn, arrested in subsequent development. This indicates a conserved functionality of potent in postembryonic development. Finally, we mapped the mutation by next generation sequencing and identify the affected gene. Analysis of interactors of potent putatively relates its function with auxin signaling. | |
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Internacional
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Si |
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Nombre congreso
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The 26th International Conference on Arabidopsis Research |
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Tipo de participación
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970 |
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Lugar del congreso
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Paris |
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Revisores
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No |
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ISBN o ISSN
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0000000000000 |
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DOI
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Fecha inicio congreso
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05/07/2015 |
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Fecha fin congreso
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07/07/2015 |
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Desde la página
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100 |
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Hasta la página
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100 |
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Título de las actas
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The 26th International Conference on Arabidopsis Research: abstract book |