Puccinia kansensis
| Puccinia kansensis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia kansensis | ||||||||||||
| Ellis & Bartholomew |
Puccinia kansensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of bladder cherries and the sweet grass Buchloe dactyloides . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in North America .
features
Macroscopic features
Puccinia kansensis can only be recognized with the naked eye by means of the spore beds emerging 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 kansensis grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The systemically growing aecia of the species have hyaline aeciospores 16–24 × 14–19 µm in size . The yellowish uredia of the species usually grow on the upper side of the leaves of the host plant. Their hyaline uredospores are usually spherical, 17–22 × 15–18 µm in size and finely spiky. The mostly underside of the leaf growing parts of the species are black, powdery and uncovered early. The hazelnut-brown teliospores of the fungus are two-celled, usually long ellipsoid and 23–30 × 17–22 µm in size. Their stem is colorless and up to 30 µm long.
distribution
The known distribution area of Puccinia kansensis extends from Nebraska to Mexico .
ecology
The host plants of Puccinia kansensis are for the haplonten bladder cherries ( Physalis spp.) And Buchloe dactyloides 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 .