In the latest issue of Nature Genetics (volume 22; in July 1st 1999) the first ever-established complete clone-based physical map of a plant genome is published. The work was conducted in the group of Dr. Thomas Altmann at the Max Planck Institute of Molecular Plant Physiology, Golm, in collaboration with groups at the Max Planck Institute of Molecular Genetics, Berlin, Germany, the University of Pennsylvania, Philadelphia, and the Washington University, St. Louis, USA. The map covers the entire nuclear genome of the higher plant Arabidopsis thaliana. Furthermore, this map is the first ever assembled (for any organism) entirely on the basis of BAC (bacterial artificial chromosome) clones, the premier system for cloning and maintenance of large genomic DNA.
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