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Of ozone holes and Triffids

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Depletion of stratospheric ozone increases the amount of ultraviolet-B (UV-B) irradiation experienced on Earth. Now Ries et al. report in the 6 July Nature that increased UV-B exposure can reduce the genomic stability of plants (Nature 2000, 406:98-101). They use a reporter gene inserted as a tandem or inverted repeat as a probe to detect 1.7-fold to 14-fold increases in homologous recombination after increasing UV-B levels. The plant germline is protected from UV-B for much of its life, and yet the higher levels of UV-B also cause a 4-10-fold increase in germline recombination.

References

  1. 1.

    Increased summertime UV radiation in New Zealand in response to ozone loss.

  2. 2.

    Nature, [http://www.nature.com/nature/]

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Wells, W. Of ozone holes and Triffids. Genome Biol 1, spotlight-20000713-01 (2000) doi:10.1186/gb-spotlight-20000713-01

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Keywords

  • Ozone
  • Reporter Gene
  • Homologous Recombination
  • Inverted Repeat
  • Genomic Stability