Liu Zuoheng, Tang Dexiang, Lu Yingling, Zhu Juye, Luo Lijun, Sun Tao, Yu Hong
Yunnan Herbal Laboratory, College of Ecology and Environmental Sciences, Yunnan University, Kunming, 650504, China Yunnan University Kunming China.
MycoKeys. 2024 May 16;105:179-202. doi: 10.3897/mycokeys.105.119893. eCollection 2024.
Species of the family Polycephalomycetaceae grow on insects or entomopathogenic fungi and are distributed from tropical to subtropical regions. This study proposed four new species of hyperparasitic fungi from China based on six molecular markers (ITS, SSU, LSU, , and ) phylogenetic analyses and morphological characteristics. The four new species, i.e. , , and , were described and illustrated. , exhibiting a hyperparasitic lifestyle on , differed from other species in producing subulate β-phialides and ovoid or elliptic α-conidia. was distinct from other species, being parasitic on sp., as producing oval or long oval-shaped α-conidia and columns of β-conidia. differed from other species as having synnemata with fertile head, linear β-conidia and parasitic on . was distinct from other species, being parasitic on the fungus , as producing round or ovoid α-conidia and elliptical β-conidia without synnemata from the colonies. These four species were clearly distinguished from other species in the family Polycephalomycetaceae by phylogenetic and morphological characteristics. The morphological features were discussed and compared to relevant species in the present paper.
多顶孢科的物种生长在昆虫或昆虫病原真菌上，分布于热带至亚热带地区。本研究基于六个分子标记（ITS、SSU、LSU、 、 和 ）的系统发育分析和形态特征，提出了来自中国的四种新的重寄生真菌物种。描述并说明了这四个新物种，即 、 、 和 。 在 上表现出重寄生生活方式，与其他物种的不同之处在于产生钻形的β-瓶梗和卵形或椭圆形的α-分生孢子。 与其他物种不同，寄生在 属真菌上，产生椭圆形或长椭圆形的α-分生孢子和β-分生孢子柱。 与其他物种不同，具有具育头部的分生孢子梗束、线形β-分生孢子，寄生在 上。 与其他物种不同，寄生在真菌 上，产生圆形或卵形的α-分生孢子和无分生孢子梗束的椭圆形β-分生孢子。通过系统发育和形态特征，这四个物种与多顶孢科的其他物种明显区分开来。本文对形态特征进行了讨论并与相关物种进行了比较。
