The identification and analysis of meristematic mutations within the apple tree that developed the RubyMac sport mutation.

ABSTRACT:

Background

Understanding the molecular basis of sport mutations in fruit trees has the potential to accelerate generation of improved cultivars.

Results

For this, we analyzed the genome of the apple tree that developed the RubyMac phenotype through a sport mutation that led to the characteristic fruit coloring of this variety. Overall, we found 46 somatic mutations that distinguished the mutant and wild-type branches of the tree. In addition, we found 54 somatic gene conversions (i.e., loss-of-heterozygosity mutations) that also distinguished the two parts of the tree. Approximately 20% of the mutations were specific to individual cell lineages, suggesting that they originated from the corresponding meristematic layers. Interestingly, the de novo mutations were enriched for

SUBMITTER: Sun H 

PROVIDER: S-EPMC11443920 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature