Puccinia phalaridis
| Puccinia phalaridis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia phalaridis | ||||||||||||
| Plowright |
Puccinia phalaridis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of arum and glossy 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 includes Western and Central Europe.
features
Puccinia phalaridis 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 phalaridis grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Your pyknia are yellowish. The aecia of the species grow in rounded groups and form bright spots. They have spherical to oval aecidiospores of 20–26 × 16–22 µm , which are colorless and warty. The uredia are small, round or oblong and rust-colored. Their uredospores are round to ovate, 19–27 × 18–26 µm in size, yellowish to brownish and warty. The Telien the way are dot or line-shaped and black. The teleutospores are two-celled, club-shaped and 33–54 × 16–20 µm in size. They are pale brown, their stem is very short.
distribution
Puccinia phalaridis has a distribution area that extends over Central and Western Europe.
ecology
The host plants of Puccinia phalaridis are as Haplont arum sticks ( Arum spp.) And reed 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.