Gene marker loss induced by the transposable element, En, in maize

J Cormack, P A Peterson
1994 Genetics  
The En/Spm transposable element system in maize includes the functional element, En/Spm and the receptor element I/dSpm. An En receptor has been found that shows En-induced breakage. This En-responsive receptor (designated I836518) is located on the short arm of chromosome 9, proximal to Wx. In the presence of En, markers distal to the receptor show a loss of gene expression. Kernels heterozygous for aleurone and endosperm marker genes have a variegated appearance. The hypothesis is advanced
more » ... t this variegation represents a physical loss of the chromosome segments carrying the genes distal to the receptor position. It is the first case of an En-controlled breakage event.
doi:10.1093/genetics/136.3.1151 fatcat:nqm5gwrnvjalre72bhk7cc4uly