Puccinia littoralis
| Puccinia littoralis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia littoralis | ||||||||||||
| Rostr. |
Puccinia littoralis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the composites of the tribe Cichoriae and rushes . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It iswidespread in the Palearctic .
features
Macroscopic features
Puccinia littoralis can only be recognized with the naked eye by means of the spore beds protruding on the surface of the host. They grow in nests that appear as yellowish to brown spots and pustules on the leaf surfaces.
Microscopic features
The mycelium of Puccinia littoralis grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia are scattered, brown and plump. The aecia of the species growing on the underside of the host leaves are cup-shaped. Their aeciospores are 15–22 × 15–22 µm in size, rounded, polyhedral and dotted. The light brown uredia of the mushroom are small. Their yellow-brown uredospores are narrow ellipsoidal to ovate, 18–28 × 12–20 µm in size and spiky. The parts of the species, which often arise from the uredia, are black-brown and elliptical to elongated. The brown teliospores are two-celled, usually ovoid to club-shaped and 35–55 × 15–23 µm in size. Their stalk is yellowish and up to 45 µm long.
distribution
The known distribution area of Puccinia littoralis includes the entire Palearctic .
ecology
The host plants of Puccinia littoralis are chicory ( Cichorium spp.) And goose thistles ( Sonchus spp.) For the haplont and rushes ( Juncus spp.) For the dikaryote . The fungus feeds on the nutrients present in the storage tissue of the plants, its spore beds later break through the leaf surface and release spores. The species has a development cycle with Aecien, Spermogonia, Telien and Uredien and undergoes a host change.
literature
- Ernst Gäumann: The rust fungi of Central Europe. With special consideration of Switzerland . In: Contributions to the cryptogam flora in Switzerland . tape 12 . Commission publisher Buchdruckerei Büchler & Co, Bern 1959.