Artículo
Homeotic genes controlling flower development in Antirrhinum
Autor/es | Coen, Enrico S.
Doyle, Sandra Romero Rodríguez, José María Elliot, Robert C. Magrath, Ruth Carpenter, Rosemary |
Departamento | Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular |
Fecha de publicación | 1991 |
Fecha de depósito | 2017-07-12 |
Publicado en |
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Resumen | In order to study genes controlling flower development, we have carried out an extensive transposon-mutagenesis experiment in Antirrhinum majus. More than 15 independent homeotic mutations were obtained, allowing three ... In order to study genes controlling flower development, we have carried out an extensive transposon-mutagenesis experiment in Antirrhinum majus. More than 15 independent homeotic mutations were obtained, allowing three categories of genes to be defined. The first includes floricaula (flo), a primary gene required for the initiation of the floral developmental pathway. In the absence of the wild-type flo product, proliferating inflorescence meristems arise in place of flowers. The flo gene has been isolated and shown to be expressed transiently in a subset of organ primordia in the floral meristem. The second category includes genes that affect the identity, and also sometimes the number, of whorls of organs in the flower. These genes act in overlapping domains so that each whorl has a distinct combination of gene functions, suggesting a model for the genetic control of whorl identity and number. Genes of the third category control differences between organs in the same whorl and hence the overall symmetry of the flower. We discuss how the basic plan of the flower and inflorescence may arise through the interactions between the three categories of genes. |
Cita | Coen, E.S., Doyle, S., Romero Rodríguez, J.M., Elliot, R.C., Magrath, R. y Carpenter, R. (1991). Homeotic genes controlling flower development in Antirrhinum. Homeotic genes controlling flower development in Antirrhinum, 113 (supl. 1), 149-155. |
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