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Telomerase activity in plant extracts

K Heller1, A Kilian, M A Piatyszek

  • 1Department of Crop and Soil Sciences, Washington State University, Pullman 99164-6420, USA.

Molecular & General Genetics : MGG
|September 13, 1996
PubMed
Summary

Plant telomerase activity was detected in reproductive tissues of barley and Arabidopsis thaliana using a modified Telomeric Repeat Amplification Protocol (TRAP) assay, but not in barley leaves.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Plant Science

Background:

  • Telomeres protect eukaryotic chromosomes and are synthesized by telomerase.
  • Plant telomeres contain a conserved repeat sequence (TTTAGGG)n.
  • Plant telomerase activity and expression remain largely uncharacterized.

Purpose of the Study:

  • To investigate the presence and localization of telomerase activity in plant tissues.
  • To establish a method for detecting plant telomerase activity.

Main Methods:

  • A modified Telomeric Repeat Amplification Protocol (TRAP) assay was employed.
  • Plant tissues from barley (embryo, anther, carpel, leaf) and Arabidopsis thaliana (immature seeds) were analyzed.

Main Results:

  • Telomerase activity was detected in barley embryo, anther, and carpel tissues.
  • Telomerase activity was also found in immature Arabidopsis thaliana seeds.
  • No telomerase activity was observed in barley leaf tissue.

Conclusions:

  • Telomerase is active in specific reproductive tissues of plants.
  • This study provides the first documentation of plant telomerase activity.
  • Tissue-specific expression suggests a role in plant reproduction and development.

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