DNA lesions occur with loss of viability in embryos of ageing rye seed

@article{Cheah1978DNALO,
  title={DNA lesions occur with loss of viability in embryos of ageing rye seed},
  author={Kathryn S. E. Cheah and Daphne J. Osborne},
  journal={Nature},
  year={1978},
  volume={272},
  pages={593-599}
}
In dry seeds, fragmentation of nuclear DNA and activation of DNases occur in vivo during embryo senescence. This loss of DNA integrity could be the source of chromosomal aberrations and impaired transcription observed when seeds of low viability germinate. 
DNA ligase in repair and replication in the embryos of rye, Secale cereale
TLDR
Fragmentation of nuclear DNA and loss of DNA integrity, occur progressively in the embryos of dry seeds, and evidence indicates that a single species of DNA ligase is involved. Expand
Hazards of a germinating seed: available water and the maintenance of genomic integrity.
TLDR
The loss of desiccation tolerance at the border of G2M and cytokinesis is discussed in relation to nucleases, DNA conformation, DNA damage, and stages of arrest in the first cell cycle. Expand
DNA Integrity and Synthesis in Relation to Seed Vigour in Sugar Beet
TLDR
DNA repair, including the ligation of DNA breaks, is one of the earliest events during rehydration from the dry state in seeds and has been shown to occur in sugar-beet embryos following a two-hour period of imbibition. Expand
DNA ligase activity in deteriorated maize embryo axes during germination: a model relating defects in DNA metabolism in seeds to loss of germinability
TLDR
Analysis of the effect of hot–dry and hot–humid conditions on DNA ligase activity and a model for loss of viability and vigour due to damage of DNA metabolism is proposed. Expand
Inter-nucleosomal DNA fragmentation and loss of RNA integrity during seed ageing
TLDR
A model in which interlinked programmed and non-programmed events contribute to seed ageing is presented, and it is suggested that protection of nucleic acids during ageing is key to seed longevity. Expand
Biochemical control systems operating in the early hours of germination
TLDR
The critical role of DNA repair early in imbibition is considered in the context of genetic integrity of the nuclear template and successful germination. Expand
Natural and artificial seed ageing in maize: germination and DNA synthesis
TLDR
A close and direct relationship was found between seed deterioration and DNA metabolism in all maize materials which responded to ageing according to their genetic constitution; i.e., vigorous genotypes suffered less severe damage or recovery was faster than in the low-vigour genotypes. Expand
Activity of DNA polymerase-λ in dry and germinating seeds of Zea mays L.
TLDR
Prominent presence of the ddNTP sensitive DNA pol-λ was found after imbibition in Zea mays in activity gel analysis, indicating crucial role of the enzyme during seed germination and early seedling stage in maize plant. Expand
Life and death in the embryos of seeds.
TLDR
The results show the importance of hydration levels in the ageing processes of stored seeds and provide a caution for the priming procedures that are used in the seed industry. Expand
DNA Integrity and DNA Polymerase Activity in Deteriorated Maize Embryo Axes
TLDR
It is suggested that DNA polymerase plays an important role during the first hours of seed germination because recovery is faster after humid treatment than after dry treatment and appears to be due to new enzyme synthesis since recovery is inhibited by cycloheximide. Expand
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