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Schamberg's disease, (also known as "progressive pigmentary dermatosis of Schamberg", [1] "purpura pigmentosa progressiva" (PPP), [1] and "Schamberg's purpura" [1]) is a chronic discoloration of the skin found in people of all ages, usually only affecting the feet, legs or thighs or a combination.
Rust fungi grow intracellularly, and make spore-producing fruiting bodies within or, more often, on the surfaces of affected plant parts. [3] Some rust species form perennial systemic infections that may cause plant deformities such as growth retardation, witch's broom, stem canker, galls, or hypertrophy of affected plant parts.
Rust lesions can cause leaves or stems to become weak and break or fall off, resulting in decreased photosynthetic ability and extreme difficulty during harvest. Symptoms on the alternate host grasses are small ovular red/brown (rust colored) powdery lesions, which release uredospores .
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It also has two uniform dark stripes below its eyes and one or more reddish rust-colored spots on its side or belly. The coloration of both sexes is similar. This species has an anguilliform body shape, with large pectoral fins and two spines on the anal fin. Additionally, breeding males often have a large fleshy lump on the top of their heads. [7]
Treatment involves medicated tank water, and while the costs are generally low (around $20 to $100 for treatment supplies), severe infections in large aquariums may require professional intervention.
The most identifiable sign of P. helianthi is the uredinia which forms rust-colored pustules on leaves, stems, petioles, and bracts. These darken into black, telial resting pustules once temperatures decrease. Flask-shaped pycnia appear as yellow-orange spots, 6mm or less, on the upper side of leaves in early spring.
Puccinia thaliae is the causal agent of canna rust, a fungal disease of Canna. Symptoms include yellow to tan spots on the plant's leaves and stems. Initial disease symptoms will result in scattered sori (clustered sporangia), eventually covering the entirety of the leaf with coalescing postulates.
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