Puccinia agropyrina
| Puccinia agropyrina | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia agropyrina | ||||||||||||
| Eriksson |
Puccinia agropyrina is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the venomous buttercup and forest 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
Puccinia agropyrina 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 or blackish spots and pustules on the leaf surfaces.
The mycelium of Puccinia agropyrina grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Your pyknia grow in small groups on the upper side of the leaf. The aecia of the species are cup-shaped and grow on both sides and on the stems. They have polyhedral to spherical or ellipsoidal aecidiospores 19–24 × 15–21 µm , which are colorless and warty. The uredia are round to oblong. Their uredospores are spherical to ellipsoidal, 16–26 × 16–26 µm in size and spiky. The parts of the species are small, black-brown and covered. The teleutospores are two-celled, long-club-shaped and 37–42 × 13–16 µm in size. Their handle is firm and short.
distribution
Puccinia agropyrina has a distribution area that extends all over Europe.
ecology
The host plants of Puccinia agropyrina are as Haplont poison buttercups ( Ranunculus scleratus ) and forest quicks ( Agropyron 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 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.