Puccinia distichlidis
| Puccinia distichlidis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia distichlidis | ||||||||||||
| Ellis & Everh. |
Puccinia distichlidis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of loosestrife ( Lysimachia ) and beach milkweed ( Glaux maritima ) as well as Spartina - sweet grasses . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in much of North America .
features
Macroscopic features
Puccinia distichlidis 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 spots and pustules on the leaf surfaces.
Microscopic features
The mycelium of Puccinia distichlidis 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 18–27 × 15–24 µm large, hyaline aeciospores with a wrinkled surface. The yellow uredia of the fungus grow on the upper side of the host leaves. Their light yellow uredospores are 26–33 × 23–28 µm in size, spherical, broadly ellipsoidal and finely spiky. The parts of the species that grow on the upper side are blackish and open early. The light chestnut-brown teliospores are two-celled, usually elongated, lanceolate and 42–64 × 21–27 µm in size. Their stem is golden and up to 115 µm long.
distribution
The known distribution area of Puccinia distichlidis includes the temperate North America .
ecology
The host plants of Puccinia distichlidis are for the Haplont loosestrife ( Steironema spp.) And beach milkweed ( Glaux maritima ) as well as Spartina gracilis and S. pectinata 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 Telien, Uredien, Aecien and Spermogonia and changes host.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .