First Plant Genome Thrills Biologists

Tiny thale cress, or Arabidopsis thaliana, is the first plant to have almost all its DNA decoded. Elliot Meyerowitz

An international team of scientists has published the first nearly complete genetic blueprint of a plant. Now, thale cress—a small weed related to the mustard plant—joins more than 30 bacteria, baker’s yeast, the nematode worm, the fruit fly, and the human in a growing roster of genetically decoded organisms.