Puccinia schmidtiana
| Puccinia schmidtiana | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia schmidtiana | ||||||||||||
| Dietel |
Puccinia schmidtiana is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of knot flowers and cane grass . Symptoms of infestation by the species are yellow spots of rust and pustules on the leaf surfaces of the host plants. The distribution area covers all of Europe.
features
Macroscopic features
Puccinia schmidtiana 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 or blackish spots and pustules on the leaf surfaces.
Microscopic features
The mycelium of Puccinia schmidtiana grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Your pyknia grow on both leaf sides and are flat to spherical. The aecia of the species grow in rings around the pyknia. They have spherical to ellipsoidal aecidiospores of 18–22 × 15–18 µm , which are colorless and warty. The Uredien and Telien of the kind are not yet described in detail.
distribution
Puccinia schmidtiana has a distribution area that stretches across Europe, but the species is considered rare.
ecology
The host plants of Puccinia schmidtiana are Haplont knot flowers ( Leucojum spp.) And cane grass ( Phalaris arundinacea ) 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 pycnias, uredia, telia and aecidia.
literature
- Ernst Gäumann: The rust fungi of Central Europe. With special consideration of Switzerland . In: Contributions to the cryptogam flora in Switzerland . tape XII . Commission publisher Buchdruckerei Büchler & Co, Bern 1959.