Four new species of the genus Hymenoscyphus (fungi) based on morphology and molecular data

被引:13
作者
Zheng HuanDi [1 ]
Zhuang WenYing [1 ]
机构
[1] Chinese Acad Sci, Inst Microbiol, State Key Lab Mycol, Beijing 100101, Peoples R China
基金
中国国家自然科学基金;
关键词
Helotiaceae; morphology; sequence analyses; taxonomy; RECORDS; HELOTIALES; LEOTIACEAE; MAGNITUDE; CHINA;
D O I
10.1007/s11427-012-4429-1
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Four new species of Hymenoscyphus (H. brevicellulus, H. hyaloexcipulus, H. microcaudatus, and H. subsymmetricus) and a new Chinese record (H. subpallescens) are described. These five species share common characteristics: small apothecia (< 3 mm in diameter); hymenium whitish, pale yellow, to yellow in color; ectal excipulum of textura prismatica; asci arising from simple septa; ascospores scutuloid and guttulate; saprophytic nutrition; and leaf habitats, except for H. subsymmetricus, which grows on herbaceous stems. Phylogenetic analyses of internal transcribed spacer nuclear ribosomal DNA sequences, the universal DNA barcode for fungi, for 16 species in the genus indicated that these taxa were closely related to H. microserotinus, in accordance with their morphological features, but represented independent species. The distinguishing features of each new species from its relatives are discussed, and their phylogenetic relationships explored.
引用
收藏
页码:90 / 100
页数:11
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