Four new taxa of Ilyonectria and Thelonectria (Nectriaceae) revealed by morphology and combined ITS and β-tubulin sequence data
Four new taxa of Ilyonectria and Thelonectria (Nectriaceae) revealed by morphology and combined ITS and β-tubulin sequence data
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DOI：
10.11646/phytotaxa.85.1.3
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发表时间：
2013-03
期刊：
影响因子：
1.1
通讯作者：
Z. Zeng;W. Zhuang
中科院分区：
文献类型：
--
作者：
Z. Zeng;W. Zhuang
北京滴虫的特征是表皮状织构与复杂织构混合，菌落为紫色至棕色，大分生孢子为圆锥形的弯曲圆柱形，小分生孢子为椭球状至棒状，缺少衣原体孢子。云南电孢子的特征是：三层的周壁上有垂直于外表面的短菌丝栅栏，白色的菌落，椭圆形的丝状到杆状的微分生孢子，末端圆形，缺乏衣原体孢子。湖北新蠓和中华新蠓分别转移到伊隆蠓和泰隆蠓。根据形态学和核糖体DNA ITS1-5.8S-ITS2和部分β-微管蛋白基因的组合序列数据，讨论了新分类群与近缘种的区别。
Thelonectria beijingensis sp. nov. is characterized by a distinct perithecial wall of textura epidermoidea mixed with textura intricata, purple to brown colonies, curved cylindrical macroconidia with rounded ends, ellipsoid to rod-shaped microconidia, and lacking chlamydospores. Thelonectria yunnanica sp. nov. is distinguished by a three layered perithecial wall with a palisade of short hyphae that are perpendicular to the outer surface, white colonies, elliptical-fusoid to rod-shaped microconidia with rounded ends and lacking chlamydospores. Neonectria hubeiensis and N. sinensis are transferred to Ilyonectria and Thelonectria , respectively. Distinctions between the new taxa and their close relatives are discussed based on morphology and the combined sequence data of nuclear ribosomal DNA ITS1-5.8S-ITS2 and partial β-tubulin gene.