| MLO | mildew locus O |
| EO | essential oil |
| PM | powdery mildew |
| MEME | multiple EM for motif elicitation |
| SLAC | single-likelihood ancestor counting |
| PSC | positively selected codon |
| NSC | negatively selected codon |
| MAST | motif alignment and search tool |
| BIC | Bayesian information criterion |
| Pfam | protein family database |