Can Rose Plants Host Xylella fastidiosa?

Overview

Objectives/Goals To see if Xylella fastidiosa can be hosted inside a rose plant. Methods/Materials Stem cuttings of rose plants were from my backyard; Xylella fastidiosa was given by expert. For each experiment, first inoculate water into 3 rose plants, and X. fastidiosa into the other three. Then, wait about a week or more before isolation. Results A week after the isolation process of the first experiment, bacterial colonies were in the culture medium from the rose plants inoculated with X. fastidiosa. All three plants had X. fastidiosa growing inside, although number of colonies varied. There was as little as 2 colonies in one plant to 154 colonies. Roses inoculated with water had no bacteria colonies. In the second experiment one rose plant (with Xylella inoculated into it) had no bacteria growing inside. However, the other two had bacteria colonies (23 and 510). Conclusions/Discussion The results from both experiments show that the ordinary rose plant is able to host the pathogen X. fastidiosa. Therefore, my hypothesis that rose plants can host X. fastidiosa was supported. During this whole process, there were also no visible symptom differences between the roses inoculated with X. fastidiosa and water. This means that, roses can be a silent host of X. fastidiosa.

Competition history

• CSEF 2007 Microbiology · Entry J1407

Resources

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