Morphological and molecular data reveal Retiboletus cyanescens sp. nov. and the new subgenus Nigroretiboletorum (Boletaceae)
Morphological and molecular data reveal Retiboletus cyanescens sp. nov. and the new subgenus Nigroretiboletorum (Boletaceae)
复制标题
形态学和分子数据揭示了 Retiboletus blueescens sp。
DOI：
10.11646/phytotaxa.572.3.2
复制
发表时间：
2022-11-15
期刊：
影响因子：
1.1
通讯作者：
LI，Yan-Chun
中科院分区：
文献类型：
--
作者：
LI，Jin;Wang，Zhen;LI，Yan-Chun
根据形态学和翻译延伸因子1-α（tef 1-α）、RNA聚合酶II第二大亚基（rpb 2）、核核糖体大亚基（nrLSU）和核核糖体内转录间隔区（ITS）的核苷酸序列，采用最大似然法和贝叶斯法分析了网牛肝菌属的种间关系。分析表明，网牛肝菌属在中国可分为两大分支，至少有10个种级谱系。据此，我们描述了一个新的亚属，即R. subg. Nigroretiboletorum和一新种R.这一亚属的发蓝的。新提出的亚属包括R.灰色菌属及其近缘分类群的一个属，其特征为浅灰色白色、白色或灰粉红色的伞柄，菌盖的背景为白色至灰色。文中提供了新种的彩色照片和新种的线纹图，并讨论了新种在该属内的分类和系统发育关系。此外，还编制了中国网牛肝菌属的种类检索表。
Relationships between species of Retiboletus were inferred from morphology and nucleotide sequences of the translation elongation factor 1-α gene (tef1-α), the second largest subunit of RNA polymerase II (rpb2), the nuclear ribosomal large subunit (nrLSU), and the nuclear ribosomal internal transcribed spacer (ITS), based on Maximum Likelihood and Bayesian analyses. Our analyses indicated that the genus Retiboletus is divided into two major clades, with at least 10 species-level lineages in China. Accordingly, we describe a new subgenus, ie R. subg. Nigroretiboletorum, and a new species R. cyanescens of this subgenus. The newly proposed subgenus accommodates R. griseus and its allied taxa characterized by grayish white, white, or grayish pink hymenophores and white to gray context in pileus. Color pictures of fresh basidiomata and line drawings of the new species are provided, with a discussion concerning its taxonomic and phylogenetic relationships within the genus. In addition, a key to the species of Retiboletus in China is provided.