Role of alternative telomere lengthening unmasked in telomerase knock-out mutant plants.

Abstract excerpt

Telomeres in many eukaryotes are maintained by telomerase in whose absence telomere shortening occurs. However, telomerase-deficient Arabidopsis thaliana mutants (Attert (-/-)) show extremely low rates of telomere shortening per plant generation (250-500 bp), which does not correspond to the expected outcome of replicative telomere shortening resulting from ca. 1,000 meristem cell divisions per seed-to-seed...

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