Gene Marker Loss Induced by the Transposable Element, En, in Maize
AUTOR(ES)
Cormack, J.
RESUMO
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 1836518) 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 that 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.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1205870Documentos Relacionados
- Frequent Loss of the En Transposable Element after Excision and Its Relation to Chromosome Replication in Maize (Zea Mays L.)
- A Chromosome Replication Pattern Deduced from Pericarp Phenotypes Resulting from Movements of the Transposable Element, Modulator, in Maize
- DNA modification of a maize transposable element correlates with loss of activity.
- Copy number control of a transposable element, the I factor, a LINE-like element in Drosophila
- Characterization of the maize transposable element Ac by internal deletions