Puccinia belizensis
| Puccinia belizensis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia belizensis | ||||||||||||
| Mains |
Puccinia belizensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the bamboo genus Olyra . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in Central America .
features
Macroscopic features
Puccinia belizensis 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 belizensis 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 almost hazel-brown uredia of the species grow on both sides of the leaves of the host plants. Their hazelnut to dark cinnamon - brown uredospores are mostly egg-shaped, 34–46 × 28–32 µm in size and finely spiky. The parts growing on both sides are chocolate brown, uncovered early and confluent. The golden or hazel-brown teliospores are two-celled, usually ellipsoidal to ovoid, obliquely septate and 36–45 × 20–24 µm in size; their stalk is colorless to yellowish and up to 200 µm long.
distribution
The known distribution area of Puccinia belizensis includes Belize and Yucatan .
ecology
The host plants of Puccinia belizensis are the bamboo species Olyra latifolia and O. yucatana . 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. The haplont host is possibly Sebastiana standleyana .
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .