Submitted to: Mycologia
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: August 15, 2005
Publication Date: September 1, 2005
Citation: Berner, D.K., Eskandari, F., Braun, U., Mcmahon, M.B., Luster, D.G. 2005. Cercosporella acroptili and cercosporella centaureicola sp. nov. - potential biological control agents of russian knapweed and yellow starthistle, respectively. Mycologia 97:1122-1128 Interpretive Summary: Russian knapweed and yellow starthistle are problematic invasive weeds in the western United States and California, and both weeds are targeted for biological control. A fungus from Turkey (cercosporella acroptili) was identified as a possible biological control agent for Russian knapweed, and recently a similar fungus was found damaging to yellow starthistle in the field in Greece. Because both of these fungi are potentially important for biological control of the respective weeds, studies were undertaken to ascertain whether the fungi were identical based on morphology, pathogenicity, growth an spore production, and genetics. Differences in these variables between the two fungi were sufficient to indicate that the isolate from yellow starthistle was distinct and justified a description as a new species: Cercosporella centaureicola sp. nov.