Regulatory sequence for the expression of a gene in the axillary meristems of plants and applications thereof

Abstract

[EN] The invention relates to an identified sequence of approximately 1.7 kilobases, comprising the promoter of the BRANCHED 1 gene of Arabidopsis thaliana, which can specifically regulate the axillary expression, but not the apical expression, of a particular gene. The aforementioned sequence can be used in order to genetically manipulate plants and to obtain plants having a modified plant architecture owing to an alteration in the growth or development of the axillary meristems thereof, for example, by promoting or inhibiting the development of the axillary meristems and/or replacing branches with flowers.

[ES] Se ha identificado una secuencia de aproximadamente 1,7 kilobases que comprende el promotor del gen BRANCHED 1 de Arabidopsis thaliana capaz de dirigir específicamente la expresión axilar pero no apical de un gen de interés. El empleo de dicha secuencia permite manipular genéticamente las plantas y obtener plantas con arquitectura vegetal modificada debido a una alteración en el crecimiento o desarrollo de sus meristemos axilares, por ejemplo, promoviendo o inhibiendo el desarrollo de los meristemos axilares y/o reemplazando ramas por flores.