Table 2.
Compilation of infection phenotypes of the Arabidopsis mlo2-5 single mutant and mlo2 mlo6 mlo12 triple mutants1.
| Microbial species (disease) | Strain/isolate | Type of microorganism | Mode of plant entry | mlo2-5 | mlo2-5 mlo6-2 mlo12-1 | mlo2-6 mlo6-4 mlo12-8 | Reference |
|---|---|---|---|---|---|---|---|
| Albugo laibachii (white rust) | Norwich 14 (Nc14) | Oomycete (obligate biotroph) | Stomata | n.t.2 | ~ | ~ | This study |
| Alternaria alternata (black spot) | 2177/00 | Fungus (necrotroph) | Stomata and/or direct penetration4 | ~ | ↑↑ | n.t. | 11 |
| Alternaria brassicicola (leaf spot) | MUCL 20297 | Fungus (necrotroph) | Stomata and/or direct penetration4 | ↑ | ↑↑ | n.t. | 11 |
| Blumeria graminis f.sp. hordei (powdery mildew; non-adapted) | K1 | Fungus (obligate biotroph) | Direct penetration4 | ↓ | ↓↓ | n.t. | 11 |
| Botrytis cinerea (grey mould) | Camalexin-sensitive strain | Fungus (necrotroph) | Direct penetration4 | ↓↓ | ↓↓ | n.t. | 20 |
| Colletotrichum higginsianum (anthracnose) | IMI349063 | Fungus (hemibiotroph) | Direct penetration4 | n.t. | ↓ | ↓ | This study |
| Erysiphe pisi (powdery mildew; non-adapted) | MPIPZ3 isolate | Fungus (obligate biotroph) | Direct penetration4 | ↓ | ↓↓ | n.t. | 11 |
| Fusarium oxysporum (vascular wilt and root rot) | Fo5176 | Fungus (hemibiotroph/necrotroph) | Wounding/cell junctions5 | n.t. | ↑ | ↑ | This study |
| Golovinomyces orontii (powdery mildew, adapted) | MPIPZ isolate | Fungus (obligate biotroph) | Direct penetration4 | ↓ | ↓↓ | ↓↓ | 11 This study |
| Hyaloperonospora arabidopsidis (downy mildew) | Noco2 | Oomycete (obligate biotroph) | Cell junctions5 | n.t. | ~ | ~ | This study |
| Oidium neolycopersici (powdery mildew; adapted) | Wageningen | Fungus (obligate biotroph) | Direct penetration4 | ↓ | ↓↓ | n.t. | 15 |
| Phytophthora infestans (late blight) | 208 m2 | Oomycete (hemibiotroph) | Stomata and/or direct penetration4 | ↑ | ↑↑ | n.t. | 11 |
| Serendipita indica (syn: Piriformospora indica) | DSM11827 | Fungus (endophyte) | Direct penetration4/cell junctions5 | n.t. | ~ | ~ | This study |
| Pseudomonas syringae pv. maculicola (bacterial speck) | ES4326 | Bacterium (hemibiotroph) | Stomata | n.t. | ↑ | ↑ | This study |
1↑ somewhat enhanced disease symptoms/pathogen proliferation, ↑↑ strongly enhanced disease symptoms/pathogen proliferation, ~ roughly unaltered disease symptoms/pathogen proliferation, ↓ somewhat reduced disease symptoms/pathogen proliferation, ↓↓ strongly reduced disease symptoms/pathogen proliferation. 2n.t., not tested. 3MPIPZ, Max Planck Institute for Plant Breeding Research, Cologne. 4Direct penetration into epidermal cells. 5Not penetrating epidermal cells but entering through anticlinal cell-cell junctions.