Uromyces neurocarpi
| Uromyces neurocarpi | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Uromyces neurocarpi | ||||||||||||
| Dietel |
Uromyces neurocarpi is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the legume genus Clitoria . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Central and South America .
features
Macroscopic features
Uromyces neurocarpi 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 Uromyces neurocarpi grows as with all Uromyces TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The spermogonia of the species grow on the upper side of the host leaves. The aecia of the species growing opposite them are often found along leaf veins . Their aeciospores are similar to the uredospores. The uredia of the fungus, which mainly grow on the underside of the leaves, are cinnamon brown. Their uredospores, which are also cinnamon-brown, are 22–26 × 21–25 µm in size, triangular, ovoid to spherical and spiky. The parts of the species growing mostly on the underside of the surfaces of the host leaves are yellow-brown, compact and uncovered. The bright golden teliospores are unicellular, usually narrow to long ellipsoid, warty and mostly 28–36 × 11–16 µm in size. Their stalk is hyaline and up to 65 µm long.
distribution
The known distribution area of Uromyces neurocarpi extends from Mexico and the Caribbean to South America .
ecology
The host plants of Uromyces neurocarpi are different species of clitoria . 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 goes through a probably macrocyclical development cycle with spermogonia, Aecien, Uredien and Telien and performs no host change .
literature
- George Baker Cummins : Rust Fungi on Legumes and Composites in North America . University of Arizona Press, Tucson 1978, ISBN 0-8165-0653-1 .