Visualization of chromosome condensation in plants with large chromosomes.

ABSTRACT:

Background

Most data concerning chromosome organization have been acquired from studies of a small number of model organisms, the majority of which are mammals. In plants with large genomes, the chromosomes are significantly larger than the animal chromosomes that have been studied to date, and it is possible that chromosome condensation in such plants was modified during evolution. Here, we analyzed chromosome condensation and decondensation processes in order to find structural mechanisms that allowed for an increase in chromosome size.

Results

We found that anaphase and telophase chromosomes of plants with large chromosomes (average 2C DNA content exceeded 0.8 pg per chromosome) contained chromatin-free cavities in their axial regions in contrast to well-characterized ani

SUBMITTER: Kuznetsova MA 

PROVIDER: S-EPMC5596468 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature