Puccinia hordei-maritimi
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| Puccinia hordei-maritimi | ||||||||||||
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Puccinia hordei-maritimi is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of clematis and bristles . Symptoms of infestation by the species are yellow spots of rust and pustules on the leaf surfaces of the host plants. The distribution area probably includes the western Mediterranean.
features
Puccinia hordei-maritimi 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 hordei-maritimi grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their pycnias and aecias of the species grow have not yet been described in detail. The uredia are very small and orange in color. Their uredospores are ellipsoidal to almost spherical, 22–34 × 24–28 µm in size, hyaline and spiky. The parts of the species are small, ellipsoidal over line-shaped to elongated and long covered. The teleutospores are two-celled, elongated to club-shaped and 25–73 × 13–20 µm in size. Their stem is short.
distribution
Puccinia hordei-maritimi has a distribution area that probably extends over the western Mediterranean, but has so far only been detected from the south of France.
ecology
The host plants of Puccinia hordei-maritimi are haplont clematis ( Clematis spp.) And brems ( Bromus spp.) For the dikaryotes . 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.