IBAM   22618
INSTITUTO DE BIOLOGIA AGRICOLA DE MENDOZA
Unidad Ejecutora - UE
artículos
Título:
The grapevine AINTEGUMENTA gene VvANT1 is associated with variation in berry and ovary size
Autor/es:
CONSTANZA CHIALVA; CLAUDIO MUÑOZ; CECILIA GRISSI; DIEGO LIJAVETZKY; ESTEFANIA EICHLER; SEBASTIAN GOMEZ-TALQUENCA
Revista:
PLANT MOLECULAR BIOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2016 vol. 91 p. 67 - 80
ISSN:
0167-4412
Resumen:
Fruit size is a highly important trait for most fruit and vegetable crops. This trait has been a main selection target and could be involved in divergent selection processes leading to the differentiation between modern table and wine cultivars. Even though its determination is highly influenced by cultural practices, several regions within the grapevine genome have been identified influencing berry size, mainly those related to seedlessness, but also particular transcription factors affecting cell number and/or cell size of flowers or berries. In this sense, we analyzed the relationship between the cell number of ovaries from different grapevine cultivars and final size of the flowers and berries of those cultivars. We also performed the characterization of the grapevine AINTEGUMENTA-LIKE family, particularly focused in AINTEGUMENTA (ANT), since it is well reported in Arabidopsis that ANT regulates cell proliferation and organ growth by maintaining the meristematic competence of cells during organogenesis. The present work showed the existence of a clear association between the berry and ovary size, and that the ovary cell number is a main determinant of ovary size. Our results also suggest the putative involvement of ANT in the determination of those important grapevine quality traits.