Induction of a homeodomain-leucine zipper gene by auxin is inhibited by cytokinin in Arabidopsis roots.
Biochem Biophys Res Commun
; 326(1): 203-9, 2005 Jan 07.
Article
en En
| MEDLINE
| ID: mdl-15567172
ABSTRACT
Homeobox genes are essential regulators of the development of plants as well as other organisms. We chose eight putative Arabidopsis homeobox genes not previously characterized and examined their expression in response to treatment with auxin/cytokinin. One of them, ATHB53, was further studied because it was auxin-inducible and its induction was inhibited by cytokinin. Its full-length cDNA was cloned and found to encode a protein of the HD-Zip superfamily. Whole-mount in situ hybridization and RT-PCR showed that it was expressed in the root meristem, and auxin treatment increased its expression, especially in a region from 0.3 to 0.6mm from the root tip. These results suggest that ATHB53 plays a regulatory role in auxin/cytokinin signaling during root development.
Buscar en Google
Base de datos:
MEDLINE
Asunto principal:
Arabidopsis
/
Raíces de Plantas
/
Proteínas de Homeodominio
/
Citocininas
/
Ácidos Indolacéticos
Idioma:
En
Revista:
Biochem Biophys Res Commun
Año:
2005
Tipo del documento:
Article