Submitted to: Fungal Planet
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/22/2008
Publication Date: 2/20/2008
Citation: Rossman, A.Y., Farr, D.F., Platas, G., Newcombe, G. 2008. Hydropisphaera fungicola Rossman, Farr & Newcombe, sp. nov. Fungal Planet. 24:1-2. Interpretive Summary: Fungi are a diverse group of organisms that cause serious diseases of crop plants and forest trees but are also used to control disease-causing organisms. Many new species of fungi have yet to be discovered and characterized for their use in controlling diseases. In this research a new species of fungi was discovered that grows in association with two pathogens of cottonwood trees. This new species is named, described and illustrated as well as characterized using molecular sequences. This research will be used by foresters, plant pathologists and ecologists to study the interactions of this fungus with the pathogens on trees with the possibility of using it as a biological control agent.
Technical Abstract: A new species of fungi was discovered that parasitizes Ulocladium in association with Melampsora rust on decaying leaves of Populus trichocarpa in Idaho. The fungus is described as a new species with the following characteristics: ascomata subglobose to globose, 310-420 µm diam × 280-350 µm high, with faint to distinct flattened, apex, 140-210 um diam. Ascospores 8.9-10.6 × 4.3-5.9 µm, short fusiform, one-septate, faintly striate. An Acremonium-like anamorph is produced in dual culture.