Abstract

During the screening of Korean microflora, a fungal strain (KNU-PT-1804) belonging to the genus Pestalotiopsis was isolated from persimmon tree (Diospyros kaki) bark collected from North Gyeongsang Province, Korea. The strain, KNU-PT-1804, produced smaller conidia compared with related species P. kenyana, P. neglecta, and P. telopeae. The novelty of the strain was confirmed based on phylogenetic analysis using molecular datasets of internal transcribed spacer (ITS) regions, β-tubulin (TUB2), and translation elongation factor 1-alpha (TEF1α) genes. Molecular phylogeny strongly supports that the strain is distinct from previously known Pestalotiopsis species, and we proposed the novel species, Pestalotiopsis kaki sp. nov., and provide a detailed description and illustration.

摘要

在筛选韩国菌群的过程中，从韩国庆尚北道的柿树（Diospyros kaki）树皮中分离出了属于Pestalotiopsis属的真菌菌株（KNU-PT-1804）。与相关物种肯尼亚假单胞菌（P. kenyana），疏忽假单胞菌（P. neglecta）和斜纹假单胞菌（P. telopeae）相比，菌株KNU-PT-1804产生的分生孢子较小。使用内部转录间隔区（ITS），β-微管蛋白（TUB2）和翻译延伸因子1-alpha（TEF1α）基因的分子数据集，通过系统发育分析，确认了该菌株的新颖性。分子系统发育学强烈支持该菌株不同于先前已知的菌株Pestalotiopsis种，我们提出了新种Pestalotiopsis kaki sp。nov。，并提供详细的说明和图示。