Replicon size and rate of DNA replication fork movement are correlated in grasses.
In eukaryotes, most nuclear DNA replication proceeds bidirectionally from multiple origins of replication. A unit of DNA, replicated by two replication forks from a single origin, is termed a replicon. Using results from DNA fiber autoradiography we show a novel positive correlation between replicon size and the rate of replication fork movement in root meristem nuclei of 13 grass species. Although there is interspecific variation in replicon size, it is balanced by similar variation in the rate of replication fork progression.
Kidd
A D
AD
Department of Biology, University, Southampton, United Kingdom.
Francis
D
D
Bennett
M D
MD
D006109:Poaceae / Q000235:genetics*; D012093:Replicon; D013997:Time Factors