INVESTIGADORES
GONZALEZ Daniel Hector
artículos
Título:
Identification of three MADS-box genes expressed in sunflower capitulum
Autor/es:
DEZAR, CARLOS A.; TIONI, MARIANA F.; GONZALEZ, DANIEL H.; CHAN, RAQUEL L.
Revista:
JOURNAL OF EXPERIMENTAL BOTANY
Editorial:
OXFORD UNIV PRESS
Referencias:
Año: 2003 vol. 54 p. 1637 - 1639
ISSN:
0022-0957
Resumen:
Three cDNA clones, HaPI, HaAG and HaAP3, were isolated from sunflower
inflorescences at the R2 stage of development. The cDNAs share high
sequence similarity with the PISTILLATA, AGAMOUS, and APETALA3 genes
from Arabidopsis, respectively, which contain a MADS-box and are
involved in floral organ development. Expression of the corresponding
genes was analysed by northern blots and in situ hybridization. They are
expressed preferentially in the R3 and R4 stages of capitulum
development. HaAG accumulates in fertile flowers, mainly in stamens,
while HaPI and HaAP3 are preferentially expressed in ray (sterile)
flowers and more weakly in petals and stamens of fertile flowers.