APPLIED BIOLOGICAL SCIENCES. For the article “In planta engineering of viral RNA replicons: Efficient assembly by recombination of DNA modules delivered by Agrobacterium,” by Sylvestre Marillonnet, Anatoli Giritch, Mario Gils, Romy Kandzia, Victor Klimyuk, and Yuri Gleba, which appeared in issue 18, May 4, 2004, of Proc. Natl. Acad. Sci. USA (101, 6852–6857; first published April 21, 2004; 10.1073/pnas.0400149101), the authors note that the communicating editor, Meinhart H. Zenk, is a member of the Supervisory Board for Icon Genetics. Icon Genetics is a provider of new plant engineering technologies that address expression control and safety of transgene management in plants.