Puccinia enteropogonis
| Puccinia enteropogonis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia enteropogonis | ||||||||||||
| Sydow & Sydow |
Puccinia enteropogonis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweetgrass tribus Cynodonteae . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Tanzania and India .
features
Macroscopic features
Puccinia enteropogonis 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 enteropogonis 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 uredia of the fungus grow on the upper side of the leaf surfaces of the host plant and are yellowish brown. Their light yellow uredospores are oval to ellipsoid, 21–24 × 16–19 µm in size and finely spiky. The black-brown parts of the species are uncovered and compact. The hazel-brown teliospores are two-celled, usually ellipsoidal and 25–30 × 19–22 µm in size; their stem is golden to hyaline and up to 130 µm long.
distribution
The known distribution area of Puccinia enteropogonis includes Tanzania and India .
ecology
The host plants of Puccinia enteropogonis are Chloris incompleta and Enteropogon monostachyus . 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 1971, ISBN 3-540-05336-0 .