Genome evolution during bread wheat formation unveiled by the distribution dynamics of SSR sequences on chromosomes using FISH.

ABSTRACT:

Background

During the bread wheat speciation by polyploidization, a series of genome rearrangement and sequence recombination occurred. Simple sequence repeat (SSR) sequences, predominately located in heterochromatic regions of chromosomes, are the effective marker for tracing the genomic DNA sequence variations. However, to date the distribution dynamics of SSRs on chromosomes of bread wheat and its donors, including diploid and tetraploid Triticum urartu, Aegilops speltoides, Aegilops tauschii, Triticum turgidum ssp. dicocoides, reflecting the genome evolution events during bread wheat formation had not been comprehensively investigated.

Results

The genome evolution was studied by comprehensively comparing the distribution patterns of (AAC)_n, (AAG)_n,

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC7809806 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature