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PMID:16166376

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Citation

Vespa, L, Couvillion, M, Spangler, E and Shippen, DE (2005) ATM and ATR make distinct contributions to chromosome end protection and the maintenance of telomeric DNA in Arabidopsis. Genes Dev. 19:2111-5

Abstract

Here we examine the function of ATM and ATR at telomeres in Arabidopsis. Although plants lacking ATM or ATR display wild-type telomere length homeostasis, chromosome end protection is compromised in atm atr mutants. Moreover, atm tert Arabidopsis experience an abrupt, early onset of genome instability, arguing that ATM is required for protection of short telomeres. ATR, by contrast, is required for maintenance of telomeric DNA as telomere shortening is dramatically accelerated in atr tert mutants relative to tert plants. Thus, ATM and ATR make essential and distinct contributions to chromosome end protection and telomere maintenance in higher eukaryotes.

Links

PubMed PMC1221882 Online version:10.1101/gad.1333805

Keywords

Arabidopsis/genetics; Arabidopsis/growth & development; Arabidopsis Proteins/genetics; Arabidopsis Proteins/physiology; Cell Cycle Proteins/genetics; Cell Cycle Proteins/physiology; Chromosomes, Plant/genetics; Chromosomes, Plant/metabolism; DNA Repair; DNA, Plant; Models, Biological; Mutation; Protein-Serine-Threonine Kinases/genetics; Protein-Serine-Threonine Kinases/physiology; Telomere/genetics; Telomere/metabolism

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


See also

References

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