Gao Siyu, Meng Wei, Zhang Lixiang, Yue Qun, Zheng Xu, Xu Lijian
College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, China.
College of Life Science, Northeast Forestry University, Harbin, China.
Front Microbiol. 2021 Feb 19;12:627744. doi: 10.3389/fmicb.2021.627744. eCollection 2021.
A novel genus with two new entomopathogenic species, and , was introduced based on their morphological characteristics and a multigene phylogenetic analysis, which were isolated from the forest litters collected in Northeast China. To infer their phylogenetic relationships, a six-gene dataset consisting of DNA fragments of [nuclear small subunit rDNA (SSU) + LSU + TUB + TEF + RPB1 + RPB2] was used for phylogenetic analysis, including 105 related fungi. The new genus formed a monophyletic clade basal to and its related genera (formerly ). can be morphologically distinguished from related genera by the combination of the following characteristics: formation of white to yellow colonies on different media, candelabrum-like arrangement of cylindrical or obpyriform phialides, and small subglobose to ellipsoidal conidia. Both and exhibited anti-insect activities against three farmland pests , , and . This is the first report of entomopathogenic fungi exhibiting the anti-insect activity against .
基于形态特征和多基因系统发育分析,引入了一个新属,其中包含两个新的昆虫病原物种, 和 ,它们是从中国东北采集的森林凋落物中分离出来的。为了推断它们的系统发育关系,使用了一个由 [核小亚基核糖体DNA (SSU) + LSU + TUB + TEF + RPB1 + RPB2] 的DNA片段组成的六基因数据集进行系统发育分析,包括105种相关真菌。新属 在 及其相关属(以前的 )的基部形成了一个单系分支。 可以通过以下特征的组合在形态上与相关属区分开来:在不同培养基上形成白色至黄色菌落、圆柱形或倒梨形瓶梗呈烛台状排列以及小的近球形至椭圆形分生孢子。 和 对三种农田害虫 、 和 均表现出抗虫活性。这是昆虫病原真菌对 表现出抗虫活性的首次报道。