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New Meredithiella species from mycangia of Corthylus ambrosia beetles suggest genus-level coadaptation but not species-level coevolution 期刊名称： Mycologia
作者： Chase G. Mayers,Craig C. Bateman,Thomas C. Harrington
关键词： mutualism
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中国民间故事100篇>2020感动中国十大人物摘要：Meredithiella norrisii (Microascales, Ceratocystidaceae) is an ambrosia fungus carried in mycangia of the North American ambrosia beetle, Corthylus punctatissimus. Reports on the identity of the fungal symbionts of other species of Corthylus have been inconsistent. This study tested the hypothesis that Meredithiella spp. are the primary symbionts of Corthylus spp. Cultures and/or internal transcribed spacer (ITS) rDNA barcode sequences of Meredithiella spp. were obtained consistently from beetles and galleries of nine Corthylus spp. The ITS sequences of three putative species of Meredithiella were associated with C. consimilis and C. flagellifer in Mexico and C. calamarius in Costa Rica. The symbiont of C. columbianus in the USA was identified as M. norrisii. Two new Meredithiella spp. are described: M. fracta from C. papulans
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