Puccinia inclita
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| Puccinia inclita | ||||||||||||
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Puccinia inclita is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass genera Ichnanthus and Oplismenus . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in South America .
features
Macroscopic features
Puccinia inclita 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 inclita 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 fungus's yellow uredia usually grow on the underside of the host's leaves. Their colorless uredospores are mostly ellipsoidal to broadly ovate, 27–34 × 22–26 µm in size and finely spiky. The parts of the species growing underneath the leaves are black-brown and uncovered early. The hazel-brown teliospores of the species are one to two-celled, usually broadly ellipsoidal to broadly ovate and 35–42 × 26–29 µm in size. Their stalk is yellowish and up to 60 µm long.
distribution
The known distribution area of Puccinia inclita extends from Puerto Rico via Belize to Brazil and Ecuador .
ecology
The host plants of Puccinia inclita are Oplismenus - and Ichnanthus species. 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 B. Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .