Lars Østergaard with Arabidopsis plants
A team of University of California scientists has identified a gene that controls the production by terrestrial plants of methyl halides, gaseous compounds that contribute to the destruction of ozone in the stratosphere.
The discovery of the gene, detailed in the October 14 issue of the journal Current Biology, is important because it now provides scientists with a genetic tool with which to probe how and why plants produce methyl halides. The identification of the gene should also help researchers determine the extent to which plants emit methyl halides into the atmosphere and why certain plants increase their methyl halide emissions in high salt environments.
The team of plant geneticists at UC San Diego and atmospheric chemists at UC Irvine dubbed the gene HOL for “Harmless to Ozone Layer” because disruption of the gene largely eliminates methyl halide production. The researchers discovered the gene in Arabidopsis, a mustard plant in the cabbage family that is used commonly in genetic studies.
Kim McDonald | UCSD
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