Key Discoveries cover (IMAGE) American Phytopathological Society Caption Journal cover of the Key Discoveries issue of Phytopathology, featuring hairy root formation from wound sites on the stem of a Kalanchoe daigremontiana plant after infection by Agrobacterium rhizogenes strain LBA9402 (Hooykaas). Photo credit: Paul and Marjolein Hooykaas Credit The American Phytopathological Society; Paul and Marjolein Hooykaas Usage Restrictions Credit must be given to the creator. No derivatives or adaptations of the imagery are permitted. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.