IBR   13079
INSTITUTO DE BIOLOGIA MOLECULAR Y CELULAR DE ROSARIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Control of root development by miR396 and GROWTH-REGULATING FACTOR transcription factors
Autor/es:
RODRIGUEZ VIRASORO, RAMIRO ESTEBAN; ERCOLI, MA FLORENCIA; DEBERNARDI, JUAN MANUEL; BREAKFIELD, NATALIE; MECCHIA, MARTIN; SABATINI, MARTIN; COOLS, TOON; DE VEYLDER, LIEVEN; BENFEY, PHILIP; PALATNIK, JAVIER F
Reunión:
Congreso; 11th International Congress of Plant Molecular Biology; 2015
Resumen:
Plants rely on stem cells for the generation of the different cell types that constitute their body parts. They are located within specific cellular contexts referred to as stem cell niches. While stem cells divide slowly to generate different cell types, their progeny generally undergo rapid, transient amplifying cell divisions to ensure enough cells for organ growth. Later on, cells differentiate to their final size, shape and function. In particular, during root development these three stages are organized in consecutive longitudinal developmental zones.The GROWTH-REGULATING FACTOR (GRF) family of transcription factors is a small gene family found in land plants defined by the presence of the WRC and QLQ protein domains. GRF transcripts are post transcriptionally regulated by microRNA miR396. As a result, these transcription factors are expressed preferentially in proliferating tissues where they promote cell division. Here we describe the role of GRFs and miR396 in root development. We found that the miR396/GRF regulatory module interacts with known master regulators of root development to define the longitudinal developmental zones.