Puccinia tomipara
| Puccinia tomipara | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia tomipara | ||||||||||||
| Trelease |
Puccinia tomipara is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is a endoparasite of thalictrum well as Bromus - grasses . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in central North America .
features
Macroscopic features
Puccinia tomipara can only be recognized with the naked eye by 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 tomipara grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aecia of the species have 20–24 × 16–19 µm large, spherical to broadly ellipsoidal and colorless aeciospores with a wrinkled surface. The yellow-brown uredia of the species mostly grow on the upper side of the leaves of the host plant. Their golden-brown uredospores are spherical to broadly ellipsoidal, 22–27 × 18–22 µm in size and finely spiky. The parts of the species growing on both or the lower leaf sides are brownish and long covered. The hazelnut-brown teliospores of the fungus are three- to seven-celled and septate like a cuboid, very variable in shape and 39–48 × 18–35 µm in size. Their stem is brown and very short.
distribution
The known distribution area of Puccinia tomipara includes the region around the Great Lakes to Saskatchewan .
ecology
The host plants of Puccinia tomipara are for the Haplonten meadow rue ( Thalictrum spp.) And Bromus species 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 Telien, Uredien, Spermogonia and Aecien and changes host.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .