Polyploidization increases meiotic recombination frequency in Arabidopsis.

ABSTRACT:

Background

Polyploidization is the multiplication of the whole chromosome complement and has occurred frequently in vascular plants. Maintenance of stable polyploid state over generations requires special mechanisms to control pairing and distribution of more than two homologous chromosomes during meiosis. Since a minimal number of crossover events is essential for correct chromosome segregation, we investigated whether polyploidy has an influence on the frequency of meiotic recombination.

Results

Using two genetically linked transgenes providing seed-specific fluorescence, we compared a high number of progeny from diploid and tetraploid Arabidopsis plants. We show that rates of meiotic recombination in reciprocal crosses of genetically identical diploid and autotetraploid A

SUBMITTER: Pecinka A 

PROVIDER: S-EPMC3110136 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature