Puccinia phaeopoda
| Puccinia phaeopoda | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia phaeopoda | ||||||||||||
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Puccinia phaeopoda is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Eulalia cummingii . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to the Philippines .
features
Macroscopic features
Puccinia phaeopoda 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 phaeopoda 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 same applies to uredia of the fungus or its uredospores. The parts of the species that grow underneath the leaves are black-brown, compact, later exposed and confluent. The teliospores are two-celled, often vertically septate, ovate to ellipsoid and 26–34 × 21–27 µm in size. Their stalk is brown and up to 40 µm long.
distribution
The known distribution area of Puccinia phaeopoda only includes the Philippines .
ecology
The host plant of Puccinia phaeopoda is Eulalia cummingii . 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 their host are known; Uredien, Spermogonia and Aecien could not be assigned to the fungus.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .