Eucalypt MADS-Box Genes Expressed in Developing Flowers
AUTOR(ES)
Southerton, Simon G.
FONTE
American Society of Plant Physiologists
RESUMO
Three MADS-box genes were identified from a cDNA library derived from young flowers of Eucalyptus grandis W. Hill ex Maiden. The three egm genes are single-copy genes and are expressed almost exclusively in flowers. The egm1 and egm3 genes shared strongest homology with other plant MADS-box genes, which mediate between the floral meristem and the organ-identity genes. The egm3 gene was also expressed strongly in the receptacle or floral tube, which surrounds the carpels in the eucalypt flower and bears the sepals, petals, and numerous stamens. There appeared to be a group of genes in eucalypts with strong homology with the 3′ region of the egm1 gene. The egm2 gene was expressed in eucalypt petals and stamens and was most homologous to MADS-box genes, which belong to the globosa group of genes, which regulate organogenesis of the second and third floral whorls. The possible role of these three genes in eucalypt floral development is discussed.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=34812Documentos Relacionados
- Characterization of MADS-box genes in charophycean green algae and its implication for the evolution of MADS-box genes
- Type I MADS-box genes have experienced faster birth-and-death evolution than type II MADS-box genes in angiosperms
- Family of MADS-Box Genes Expressed Early in Male and Female Reproductive Structures of Monterey Pine
- DNA binding specificity determinants in MADS-box transcription factors.
- Analise do padrão de expressão dos genes da familia MADS-box durante o desenvolvimento do fruto de Citrus sinensis