Wang Xin-Cun, Liu Tie-Zhi, Chen Shuang-Lin, Li Yi, Zhuang Wen-Ying
State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China Institute of Microbiology, Chinese Academy of Sciences Beijing China.
College of Life Sciences, Chifeng University, Chifeng, Inner Mongolia 024000, China Chifeng University Chifeng China.
MycoKeys. 2019 Oct 31;60:45-67. doi: 10.3897/mycokeys.60.38186. eCollection 2019.
species are ascomycetous macrofungi with saddle-shaped or cupulate apothecia. They are distributed worldwide and play an important ecological role as ectomycorrhizal symbionts. A recent multi-locus phylogenetic study of the genus suggested that the cupulate group of was in need of comprehensive revision. In this study, all the specimens of cupulate sensu lato with ribbed stipes deposited in HMAS were examined morphologically and molecularly. A four-locus phylogeny was reconstructed using partial sequences of the heat shock protein 90, nuclear rDNA internal transcribed spacer region 2, nuclear large subunit ribosomal DNA and translation elongation factor 1-α genes. Three clades were revealed in sensu stricto. Twenty species were included in the analysis, of which 13 are distributed in China. Three new species, , and , are described and illustrated in detail. A neotype was designated for . is a new record for China, while should be excluded from Chinese mycota. Hsp90 and ITS2 are recommended as useful supplementary barcodes for species identifications of the genus.
该属物种为子囊菌大型真菌，具有马鞍形或杯状子囊盘。它们分布于世界各地，作为外生菌根共生体发挥着重要的生态作用。最近一项对该属的多位点系统发育研究表明，杯状类群需要全面修订。在本研究中，对保存在中国科学院微生物研究所（HMAS）的所有具肋柄的杯状广义马鞍菌标本进行了形态学和分子学研究。利用热休克蛋白90、核糖体DNA内转录间隔区2、核糖体DNA大亚基和翻译延伸因子1-α基因的部分序列重建了四基因座系统发育树。狭义马鞍菌属中揭示出三个分支。分析中包括20个物种，其中13种分布在中国。详细描述和说明了三个新物种，即[物种名1]、[物种名2]和[物种名3]。为[物种名4]指定了新模式。[物种名5]是中国新记录种，而[物种名6]应从中国真菌区系中排除。推荐热休克蛋白90和内转录间隔区2作为该属物种鉴定的有用补充条形码。
