Structural variants in the soybean genome localize to clusters of biotic stress-response genes.
Plant Physiol
; 159(4): 1295-308, 2012 Aug.
Article
in En
| MEDLINE
| ID: mdl-22696021
ABSTRACT
Genome-wide structural and gene content variations are hypothesized to drive important phenotypic variation within a species. Structural and gene content variations were assessed among four soybean (Glycine max) genotypes using array hybridization and targeted resequencing. Many chromosomes exhibited relatively low rates of structural variation (SV) among genotypes. However, several regions exhibited both copy number and presence-absence variation, the most prominent found on chromosomes 3, 6, 7, 16, and 18. Interestingly, the regions most enriched for SV were specifically localized to gene-rich regions that harbor clustered multigene families. The most abundant classes of gene families associated with these regions were the nucleotide-binding and receptor-like protein classes, both of which are important for plant biotic defense. The colocalization of SV with plant defense response signal transduction pathways provides insight into the mechanisms of soybean resistance gene evolution and may inform the development of new approaches to resistance gene cloning.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Glycine max
/
Stress, Physiological
/
Multigene Family
/
Genes, Plant
Language:
En
Journal:
Plant Physiol
Year:
2012
Document type:
Article
Affiliation country:
United States