Puccinia benguetensis
| Puccinia benguetensis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia benguetensis | ||||||||||||
| Sydow |
Puccinia benguetensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the Microstegium species. Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It has a distribution area that extends over large parts of East Asia.
features
Macroscopic features
Puccinia benguetensis can only be recognized with the naked eye by 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 benguetensis grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aecia of the species are not yet known. The cinnamon-brown uredia grow on the underside of the host's leaves. Their cinnamon - brown uredospores are ovate to ellipsoidal, 23–30 × 19–22 µm in size and finely spiky. The parts of the species are black-brown, exposed and compact. The hazelnut-brown teliospores are two-celled, ovate to ellipsoidal and 24–33 × 18–21 µm in size; their stalk is yellowish-brown and up to 40 µm long.
distribution
The known distribution area of Puccinia benguetensis includes parts of China , Taiwan and the Philippines .
ecology
The host plants of Puccinia benguetensis are species of the genus Microstegia . 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 apparently has a development cycle with Telien and Uredien, which manages without change of host; Spermogonia and aecia are apparently absent.
literature
- George B. Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .