Our previous results on the characterization of adventitious root formation in three phylogenetically-distant dicotyledonous (Arabidopsis, tomato and carnation) revealed the central role of hormonal regulation and suggested the existence of common genetic mechanisms. However, our knowledge about the eventual conservation of the gene regulatory networks that control the formation of adventitious roots in non-model species is quite limited.

In our lab, we have initiated the histological, physiological and molecular characterization of adventitious root formation in several tomato mutants and will expand our studies to a collection of commercial varieties, wild species and introgression lines.

Based on the evidence that some of the genetic controls of plant development are be conserved, we have selected the transcription factors of the AINTEGUMENTA-LIKE (AIL) family for their functional dissection during adventitious root formation. We will characterize the spatial and temporal expression patterns of the AIL genes during the formation of adventitious roots on tomato hypocotyls after wounding, we will determine functional equivalences with their Arabidopsis orthologues, and we will obtain tomato lines where the AIL expression levels are modified.

Using the molecular tools that have been generated previously in our lab, we will initiate the genetic analysis of adventitious root formation in carnation to identify loci involved in the observed differences in a mapping population derived from a cross between two varieties with antagonistic responses during the rooting of stem cuttings.


Projects and Funding entities:

Project Title
Funding Entity
2013-2015 Requisitos hormonales y genéticos
de la formación de raíces adventicias
AGL2012-33610 Logotipo_del_Ministerio_de_Economía_y_Competitividad
2016-2018 Genómica comparada de la formación
de raíces adventicias en tomate y clavel
BIO2015-64255-R Logotipo_del_Ministerio_de_Economía_y_Competitividad

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