Karyotype reshufflings of Festuca pratensis × Lolium perenne hybrids.

ABSTRACT: Many different processes have an impact on the shape of plant karyotype. Recently, cytogenetic examination of Lolium species has revealed the occurrence of spontaneous fragile sites (FSs) associated with 35S rDNA regions. The FSs are defined as the chromosomal regions that are sensitive to forming gaps or breaks on chromosomes. The shape of karyotype can also be determined by interstitial telomeric sequences (ITSs), what was recognized for the first time in this paper in chromosomes of Festuca pratensis × Lolium perenne hybrids. Both FSs and ITSs can contribute to genome instabilities and chromosome rearrangements. To evaluate whether these cytogenetic phenomena have an impact on karyotype reshuffling observed in Festuca × Lolium hybrids, we examined F₁ F. pratensis × L. perenne

SUBMITTER: Majka J 

PROVIDER: S-EPMC5830480 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature