Puccinia kusanoi
| Puccinia kusanoi | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia kusanoi | ||||||||||||
| Dietel |
Puccinia kusanoi is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Deutzia and various bamboos . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in East Asia .
features
Macroscopic features
Puccinia kusanoi 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 kusanoi grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aecia of the species have 22–28 × 19–24 µm, almost hyaline aeciospores with a wrinkled surface. The cinnamon-brown uredia of the species grow on the underside of the leaves of the host plant. Their golden brown uredospores are broadly ellipsoidal, 29–34 × 24–28 µm in size and finely spiky. The parts of the species growing underneath the leaves are black-brown and uncovered early. The hazelnut-brown teliospores of the fungus are two-celled and 50–78 × 17–21 µm in size. The stem is colorless to yellowish and up to 200 µm long.
distribution
The known distribution area of Puccinia kusanoi extends from China to Taiwan to Japan .
ecology
The host plants of Puccinia kusanoi are for the haplont deutzia ( Deutzia spp.) And various bamboos for the dikaryote . 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 with Telien, Uredien, Spermogonia and Aecien and changes host.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .