Johanna Acevedo-Garcia, Kim Walden, Franz Leissing, Kira Baumgarten, Katarzyna Drwiega, Mark Kwaaitaal, Anja Reinstädler, Matthias Freh, Xue Dong, Geo Velikkakam James, Lisa C Baus, Martin Mascher, Nils Stein, Korbinian Schneeberger, Nahal Brocke-Ahmadinejad, Martin Kollmar, Paul Schulze-Lefert, Ralph Panstruga
Loss-of-function alleles of plant MLO genes confer broad-spectrum resistance to powdery mildews in many eudicot and monocot plant species. Although barley mlo mutants have been used in agriculture for more than 40 years, understanding of the molecular principles underlying this type of disease resistance remains fragmentary. Forward genetic screens in barley have revealed mutations in two Required for mlo resistance (Ror) genes that partially impair immunity conferred by mlo mutants. While Ror2 encodes a soluble N-ethylmaleimide-sensitive factor attached protein receptor (SNARE), the identity of Ror1, located at the pericentromeric region of barley chromosome 1H, remained elusive...
August 2, 2022: Plant Journal