The non-random patterns of genetic variation induced by asymmetric somatic hybridization in wheat.

ABSTRACT:

Background

Asymmetric somatic hybridization is an efficient crop breeding approach by introducing several exogenous chromatin fragments, which leads to genomic shock and therefore induces genome-wide genetic variation. However, the fundamental question concerning the genetic variation such as whether it occurs randomly and suffers from selection pressure remains unknown.

Results

Here, we explored this issue by comparing expressed sequence tags of a common wheat cultivar and its asymmetric somatic hybrid line. Both nucleotide substitutions and indels (insertions and deletions) had lower frequencies in coding sequences than in un-translated regions. The frequencies of nucleotide substitutions and indels were both comparable between chromosomes with and without introgressed fra

SUBMITTER: Wang M 

PROVIDER: S-EPMC6192298 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature