🇬🇧 brown rust of wheat - 🇩🇪 Roggenbraunrost - 🇪🇪 Pruunrooste - 🇷🇺 Пукциния неясная 9/7/25
🆔 Puccinia recondita Roberge ex Desm.
ℹ️ Hymenium: Rheemata of rust pustules on host leaves (uredinia, telia) with sori breaking through the epidermis; internal hyphae intercellular, forming haustoria in host tissues
ℹ️ Morphology: No cap; symptoms appear as yellowish to brown spots or pustules (rust sori) on leaves; pustules may be brownish and powdery
🌿 Obligate plant pathogen; heteroecious (requires alternate hosts), macrocyclic (has all typical rust life cycle stages: pycniospores, aeciospores, urediniospores, teliospores, basidiospores), primary hosts are cereals (wheat, rye) and some grasses
❌ Edibility inapplicable
📐 Sorus size: pustules generally small—visible on leaves
☔ Germination of urediniospores requires free moisture
🔬 Spores: Different spore types:
Aeciospores: 21-26 × 17-22 µm, broadly ellipsoid to spherical, hyaline.
Urediniospores: 24-32 × 20-25 µm, yellow to cinnamon-brown, often finely echinulate (spiny) walls.
Teliospores: Two-celled, long clavate when mature, 40-58 × 17-25 µm, brown.
🔤 Rust fungus infecting cereals and grasses (especially wheat, rye), causing brownish pustules on leaves and serious disease
🇬🇧 brown rust of wheat - 🇩🇪 Roggenbraunrost - 🇪🇪 Pruunrooste - 🇷🇺 Пукциния неясная