IBONE   05434
INSTITUTO DE BOTANICA DEL NORDESTE
Unidad Ejecutora - UE
capítulos de libros
Título:
Sizing up the flower
Autor/es:
LUCIANA DELGADO; JULIA WEISS ; MARCOS EGEA-CORTINES
Libro:
The Flowering Process and its Control in Plants: Gene Expression and Hormone Interaction,
Editorial:
Research Signpost
Referencias:
Año: 2011; p. 199 - 216
Resumen:
Abstract. Floral structure and size are the result of several parallel developmental programs that include establishment of floral primordia, organ polarity and identity, and basic cellular processes like cell division and expansion. In the last years several genes have been found that affect basic processes or specifically modify lateral organ size and shape of the organs. Although currently it appears that some of the developmental pathways are not linked, there is some kind of coordination between cell division and expansion that might help achieve organ size. Environmental effects can modify floral number and in some cases floral size but the way these happens has not been explored. This is important since changes in floral size might affect pollination. In this respect, genetic studies show that evolution of floral size could happen by direct increases in fitness due to changes in floral size or to genetic drift that would allow fixation of alleles that have strong influences on plant and floral size.