Uromyces medicaginis

Uromyces striatus is a Ständerpilzart from the order of rust fungi ( Pucciniales ). The fungus is an endoparasite of Wolf milks and Hülsenfrüchtlergattungen Medicago and Hosakia. Symptoms of infestation by the way are rust spots and pustules on the leaf surfaces of host plants. It is distributed worldwide.

Features

Macroscopic characteristics

Uromyces striatus is with the naked eye can be seen only on the basis of the projected on the surface of the host spore deposits. They grow in clusters that appear as yellowish to brown spots and pustules on the leaf surfaces.

Microscopic characteristics

The mycelium of Uromyces striatus growing intercellular like all Uromyces species and forms Saugfäden which grow in the tissue of the host memory. Your spermogonia grow on the underside of the host leaves. The leaf underside also growing Aecien the type are whitish. Your hyaline Aeciosporen are 14-25 × 11-20 microns in size, globose to breitellipsoid and warty. Most leaf underside of the mushroom growing uredia are cinnamon brown. The golden to light zimtbraunen uredospores are 19-25 × 15-20 microns in size, globose to breitellipsoid and stachelwarzig. The Telien the type is dark brown, powdery and uncovered. The dark golden to light chestnut brown teliospores are single-celled, usually globose to ellipsoid, verrucose and usually 19-25 × 15-20 microns in size. Your handle is colorless.

Dissemination

The known distribution area of Uromyces striatus includes the whole world.

Ecology

The host plants of Uromyces striatus are haploid for the Wolf milks (Euphorbia spp. ) And for the dikaryotic various Medicago and Hosakia species. The fungus feeds on the present in storage tissues of the plant nutrients, its spores bearing later break through the leaf surface and set free spores. The way passes through a macrocyclic development cycle with spermogonia, Aecien, Telien and uredia. As heteroöker parasite makes them by any change of host.