Puccinia pistorica
| Puccinia pistorica | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia pistorica | ||||||||||||
| Arthur |
Puccinia pistorica is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the daisy family Baccharis glomeruliflora . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Florida .
features
Macroscopic features
Puccinia pistorica 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 pistorica grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia and aecia are not yet known. The uredia of the fungus, which grow underneath the leaves, are large, yellow and covered for a long time. Their pale yellow uredospores are 30–38 × 27–30 µm in size, broadly ellipsoidal and spiky. The bilateral growing parts of the species are black-brown and covered, they have golden paraphyses. The clear maroon teliospores are two-celled, narrow and usually long ellipsoidal to cylindrical, waisted and 40–53 × 13–17 µm in size. Their stalk is yellowish and up to 25 µm long.
distribution
The known distribution area of Puccinia pistorica only includes Florida .
ecology
The host plant of Puccinia pistorica is Baccharis glomeruliflora . 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 goes through a development cycle of which only Telien and Uredien and their host are known so far; Spermogonia and Aecien could not be assigned to her.
Systematics
Puccinia pistorica was first described by Arthur in 1911. So far it is only known from the type location Mount Dora (Florida) . Their taxonomic status is therefore viewed as questionable.
literature
- George Baker Cummins : The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .