The Origin of Novel Flavonoids in Phlox Allotetraploids
AUTOR(ES)
Levy, Morris
RESUMO
The flavonoids of two diploid species of Phlox and two of their allotetraploid derivatives were characterized. The tetraploids accumulate five flavonoids not observed in the parental species. Generally, novel compounds are less highly glycosidated than, but otherwise similar to, parental compounds that they partially or totally replace. We propose that hybridity and polyploidy have repressed or suppressed the activity of certain ancestral genes responsible for the production of glycosidating enzymes. Accordingly, the novel compounds are merely the accumulated or modified precursors of parental compounds.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=389255Documentos Relacionados
- Chromosome Studies of Phlox
- Polymorphism for Interspecific Cross-Compatibility in Phlox
- The Effect of Structural Heterozygosity on the Degree of Preferential Pairing in Allotetraploids of Zea
- Speciation through homoploid hybridization between allotetraploids in peonies (Paeonia)
- The C-Glycosylation of Flavonoids in Cereals*♦