Puccinia croci-pallasii
| Puccinia croci-pallasii | ||||||||||||
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| Puccinia croci-pallasii | ||||||||||||
| Săvulescu |
Puccinia croci-pallasii is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Crocus pallasii . Symptoms of the infestation by the species are rust spots on the leaves of the host plants. Their distribution area includes the Romanian Bessarabia .
features
Macroscopic features
Puccinia croci-pallasii 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 rust-brown spots on the leaf surfaces and soon cover the entire underside of the leaves.
Microscopic features
The mycelium of Puccinia croci-pallasii , like all naked basidia, grows intercellularly and forms suction threads that grow into the host's storage tissue. The Telien the type are dot-shaped and often arranged in rows; they usually grow on the inside of the leaf. They are surrounded by partitions made of 60–76 × 3–6 µm paraphyses. The teleutospores are rarely one, mostly two-celled, elongated to ellipsoidal in shape and 36–46 × 13–20 µm in size; at the apex its walls are 4–10 µm thick. The stem is hyaline and short, it is 33 to 42 µm in length.
distribution
The species area of Puccinia croci-pallasii includes the Romanian Bessarabia .
ecology
The host plants of Puccinia croci-pallasii is the crocus species Crocus pallasii . 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 the parts are known, it has not been explored in detail.
literature
- Ernst Gäumann: The rust fungi of Central Europe. With special consideration of Switzerland (= contributions to the cryptogam flora of Switzerland). Commission publisher Buchdruckerei Büchler & Co, Bern 1959.