Rate of DNA replication in the DNA synthetic period of the barley chromosomes

Kusanagi, Akio

doi:10.1007/bf00331900

Cited by 16 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that heterochromatin is late replicating (reviewed by Lima-de Faria and Jaworska 1968) and in the case of cereals, S-phase can be divided into a period of replication of euchromatin followed by a delay before replication of the centromeric heterochromatin occurs (Kusanagi 1966). The timing of Ph1 and Ph2 expression is unknown.…”

Section: Discussionmentioning

confidence: 98%

Centromeric behaviour in wheat with high and low homoeologous chromosomal pairing

et al. 1997

View full text Add to dashboard Cite

Control of homoeologous chromosomal pairing in hexaploid wheat stems from a balance between a number of suppressor and promoter genes. This study used centromeric behaviour as a tool to investigate the mechanism. Fluorescent in situ hybridization employing centromeric and telomeric sequences as probes was applied to pollen mother cells of wheat and wheat/alien hybrids having different pairing gene combinations. It showed: association of centromeres during pre-meiotic interphase; decondensation of centromeric structure; sister chromatid disjunction of univalent chromosomes in homoeologous pairing situations at anaphase I; and centromeric stretching between univalent sister chromatids in wheat/rye hybrids deficient for pairing genes. The implications of these results are discussed.

show abstract

Section: Discussionmentioning

confidence: 98%

Centromeric behaviour in wheat with high and low homoeologous chromosomal pairing

et al. 1997

View full text Add to dashboard Cite

show abstract

“…As mentioned earlier, in our staling cultures some chromosomes have a tendency to break near the centromere. We are not aware of relevant studies in wheat, but proximal late-replicating chromosome segments have been reported in rye (Lima-de-Faria 1959) and in barley (Kusanagi 1966). In well established wheat cultures nucleolar volume is reduced and nucleolar constrictions can rarely be distinguished.…”

Section: Resultsmentioning

confidence: 99%

“Adaptation” and Chromosome Variability in Excised Roots of Cereals

Beuzenberg

Ferguson

Pearson

1969

Physiologia Plantarum

View full text Add to dashboard Cite

Heteroploidy, often coinciding with phenotypic or metabolic changes, was found in cereal root cultures. In some cases the changes were apparent after only 4 passages and affected the roots of bread wheat as well as those containing all or some of the wheat and rye genomes. It is unsafe to assume that cultured organised tissues are cytologically stable. The cause of the abnormality is not known but possible mechanisms are discussed.

show abstract

“…Previously, in four plant species a similar phenomenon has been found. Species in question are Secale cereale (Lima-de-Faria 1959, Darlington andHaque 1966), Fritillaria lanceolata (Pele and La Cour 1960), Vicia faba (Evans 1964), and Hordeum vulgare (Kusanagi 1966). In these species heterochromatin is displayed in root and leaf nuclei and in cell nuclei of other tissues.…”

Section: Resultsmentioning

confidence: 99%