Puccinia moliniae
| Puccinia moliniae | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia moliniae | ||||||||||||
| Tulasne |
Puccinia moliniae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Dost , Braunellen and the blue pipe grass ( Molinia caerulea ). Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in Eurasia .
features
Macroscopic features
Puccinia moliniae 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 moliniae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aecia of the species have 16-20 × 14-18 µm large, almost spherical and almost hyaline aeciospores with a wrinkled surface. The yellow-brown uredia of the species usually grow on the upper side of the leaves of the host plant. Their light yellow to golden brown uredospores are broadly ovate to spherical, 25–30 × 22–26 µm in size and finely spiky. The parts of the species, mostly growing on the top of the leaves, are chocolate brown and uncovered early. The hazelnut-brown teliospores of the fungus are two-celled, usually broadly ellipsoidal and 50–78 × 17–21 µm in size. The stem is colorless to yellowish and up to 200 µm long.
distribution
The known distribution area of Puccinia moliniae includes Europe and China .
ecology
The host plants of Puccinia moliniae are for the haplonten dost ( Origanum spp.), Quail wheat ( Melampyrum spp.) And brown cells ( Prunella spp.) As well as the blue pipegrass ( Molinia caerulea ) for the dikaryont . 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 .