Transposition-mediated DNA re-replication in maize

Title: Transposition-mediated DNA re-replication in maize

1 Every DNA segment in a eukaryotic genome normally replicates once and only once per 2 cell cycle to maintain genome stability. We show here that this restriction can be bypassed 3 through alternative transposition, a transposition reaction that utilizes the termini of two 4 separate, nearby transposable elements (TEs). Our results suggest that alternative 5 transposition during S phase can in...

Transposition and replication of modulator in maize.

Regulation of maize Ac/Ds transposition by replication and DNA methylation

Frequent loss of the En transposable element after excision and its relation to chromosome replication in maize (Zea mays L.).

A model of En transposition during chromosome replication is presented following a study of somatic events associated with the transposition of En in the endosperm tissue of the maize kernel. Two supporting assays, the excision and the postexcision events, were used in following these events. The excision of the En transposon has been monitored in the starch-producing endosperm tissue by using ...

Regulation of activator/dissociation transposition by replication and DNA methylation.

In maize the transposable elements Activator/Dissociation (Ac/Ds) transpose shortly after replication from one of the two resulting chromatids ("chromatid selectivity"). A model has been suggested that explains this phenomenon as a consequence of different affinity for Ac transposase binding to holo-, hemi-, and unmethylated transposon ends. Here we demonstrate that in petunia cells a holomethy...