Abstract
Bacterial flagellin is a potent host immune activator. Parys et al. (2021) and Colaianni etal. (2021) dissected effects of flagellin epitope variants on host immune detection and bacterial motility. They report in this issue of Cell Host & Microbe that Arabidopsis-associated bacterial microbiota differentially evolved flg22 variants that allow tunability between motility and defense activation.
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