Puccinia lapsanae
| Puccinia lapsanae | ||||||||||||
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Puccinia lapsanae on Common Rain Cabbage |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia lapsanae | ||||||||||||
| Fuckel |
Puccinia lapsanae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of common rain cabbage . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is spread all over the world.
features
Macroscopic features
Puccinia lapsanae 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 lapsanae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia grow on the upper side of the host leaves and are honey-colored. The bilateral growing aecia of the species have a white peridium . Their orange aeciospores are 16–21 × 13–17 µm in size, subgloboid to ovoid and almost smooth. The uredia of the mushroom, growing on both sides, are chestnut brown and powdery. Their light brown uredospores are spherical to ovate, 17–22 × 15–18 µm in size and finely spiky. The bilateral growing parts of the species are black-brown, powdery and scattered. The chestnut-brown teliospores are two-celled, usually ovate to ellipsoid, finely spiky and 22–33 × 17–26 µm in size. Their stem is colorless and short.
distribution
The known distribution area of Puccinia lapsanae includes the whole world.
ecology
The host plant of Puccinia lapsanae is the common rain cabbage ( Lapsana communis ). 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 Aecien, Spermogonia, Uredien and Telien and does not change host.
literature
- Ernst Gäumann: The rust fungi of Central Europe. With special consideration of Switzerland . In: Contributions to the cryptogam flora in Switzerland . tape 12 . Commission publisher Buchdruckerei Büchler & Co, Bern 1959.
