Similar replicon properties of higher plant cells with different S periods and genome sizes

Journal Article · Wed Dec 31 23:00:00 EST 1980 · Exp. Cell Res.; (United States)

DOI:https://doi.org/10.1016/0014-4827(81)90027-6· OSTI ID:5245300

Van't Hof, J; Bjerknes, C A

Root meristematic cells of nine unrelated diploid higher plants with genome sizes that differ 82-fold and with S periods that differ 4-fold have similar replicon sizes and single replication fork rates that average 22 ..mu..m/h and 8 ..mu..m/h respectively. The average replicon size of 22 ..mu..m is near the 18 ..mu..m obtained by extrapolation of measurements, taken from DNA fiber autoradiograms, to zero pulse time with (/sup 3/H)thymidine. The data suggest that the duration of S is determined by the minimal number of replicon families that function sequentially during DNA replication.

• Research Organization: Brookhaven National Lab., Upton, NY
• OSTI ID: 5245300
• Journal Information: Exp. Cell Res.; (United States), Journal Name: Exp. Cell Res.; (United States) Vol. 136; ISSN ECREA
• Country of Publication: United States
• Language: English

Related Subjects

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59 BASIC BIOLOGICAL SCIENCES
AUTORADIOGRAPHY
BODY
CELL CYCLE
CHROMOSOMES
DNA
DNA REPLICATION
LABELLED COMPOUNDS
MERISTEMS
MOLECULAR BIOLOGY
NUCLEIC ACID REPLICATION
NUCLEIC ACIDS
ORGANIC COMPOUNDS
PLANT CELLS
PLANT TISSUES
ROOTS
TISSUES
TRITIUM COMPOUNDS