Puccinia romagnoliana
| Puccinia romagnoliana | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia romagnoliana | ||||||||||||
| Maire & Saccardo |
Puccinia romagnoliana is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of various sedge grasses . Symptoms of the infestation by the species are rust spots on the leaves of the host plants. The distribution area includes a meridional area in western Eurasia .
features
Macroscopic features
Puccinia romagnoliana 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 up to 3 cm long, cinnamon-brown spots on the leaf surfaces.
Microscopic features
The mycelium of Puccinia romagnoliana grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Pyknia and Aecidia are not known for the species. The uredia are elliptical to elongated. Their uredospores are spherical to ovate, 21–31 × 15–21 µm in size and prickly. They have two germ pores. The parts of the species are also elongated, black-brown and surrounded by paraphyses . The teleutospores are rarely single, mostly two-celled, elongated to club-shaped and 38–70 × 13–21 µm in size; their stem is short and colorless.
distribution
The species area of Puccinia romagnoliana extends from the Mediterranean to Central Asia.
ecology
The host plants of Puccinia romagnoliana are various sedge grasses ( Cyperus spp.). 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 uredia and telia, the aecidia possibly grow on aster flowers .
use
Due to the high degree of infection, Puccinia romagnoliana is also being tested for biological pest control of nutgrass ( Cyperus rotundus ) in mulberry tree plantations in India.
literature
- Ernst Gäumann: The rust fungi of Central Europe. With special consideration of Switzerland . In: Contributions to the cryptogam flora in Switzerland . tape XII . Commission publishing house Buchdruckerei Büchler & Co, Bern 1959, DNB 365886610 .
Individual evidence
- ^ VP Gupta, Vineet Kumar, RK Mishra, V. Thiagarajan, RK Datta: "Puccinia romagnoliana" Marie & Sacc. - a Potential Bioherbicide Agent for Biocontrol of Purple Nutsedge ( Cyperus rotundus L.) in Mulberry. In: Journal of Phytopathology. 150, 2002, pp. 263-270. doi : 10.1046 / j.1439-0434.2002.00753.x