Puccinia lepturi
| Puccinia lepturi | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia lepturi | ||||||||||||
| Hirats. f. |
Puccinia lepturi is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Lepturus repens . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants.
features
Macroscopic features
Puccinia lepturi can only be recognized with the naked eye from 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 lepturi grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Aecia or spermogonia of the species are not known. The cinnamon-brown uredia of the fungus grow on both sides of the host leaves. Their light cinnamon-brown uredospores are 23–28 × 19–23 µm in size, broadly ovate and finely spiky. The bilateral growing parts of the species are black-brown and exposed early. The hazel-brown teliospores are two-celled, usually broadly ellipsoid and 24–28 × 22–24 µm in size. Their stalk is yellowish to colorless and up to 80 µm long.
distribution
The Cummins known distribution area of Puccinia lepturi only included the Ryūkyū Islands , but the species is also known from the Cook Islands , Tuvalu , Kiribati , Nauru , Solomon Islands and American Samoa .
ecology
The host plant of Puccinia lepturi is Lepturus repens . 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 of which only Telien and Uredien and their host are known; Spermogonia and aecia could not be assigned to the fungus.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin et al. 1971, ISBN 3-540-05336-0 .
Individual evidence
- ↑ Cook Islands Pest Lists Database - Hosts with Recorded Pest Occurrences (PDF; 251 kB)
- ↑ GBIF - Occurrence search - accessed on December 24, 2012 ( Memento of the original from March 4, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
