Systematic revision of Hydnum species in Japan
Systematic revision of Hydnum species in Japan
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DOI：
10.1080/00275514.2021.2024407
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发表时间：
2022-03
期刊：
影响因子：
2.8
通讯作者：
Ryo Sugawara;N. Maekawa;K. Sotome;A. Nakagiri;Naoki Endo
中科院分区：
文献类型：
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作者：
Ryo Sugawara;N. Maekawa;K. Sotome;A. Nakagiri;Naoki Endo
水螅属（水螅科，担子菌门）在东亚具有特有的物种多样性，但迄今为止，很少有全面系统的研究。在这里，我们进行了形态，生态，系统发育和生物学的分类在日本的水螅物种的评价。总共使用了186个日本水螅标本进行形态学观察。利用nuc rDNA内转录间隔区ITS 1 -5. 8 S-ITS 2（ITS）和翻译延伸因子1-α（tef 1）部分序列构建系统发育树。使用78单核菌株的13个物种的种内和种间交配试验没有冲突的ITS和tef 1系统发育关系推断的物种划界。这项研究提供了15个严格鉴定的日本种的详细形态描述，其中9个被描述为新种：H。alboluteum、白绒草H. albopallidum，白珠草H. pinicola、松褐叶蝉H. itachiharitake，H. minospororufescens，H. orientalbidum，H. subberkeleyanum，H. tomaense和H. tottoriense。本文报道了3个日本新记录种：H. boreorepandum，H. mulsicolor和H.脐状的其余三种（H。cremeofalum，H. minus和H. repando-orientale），以前从日本报道，重新描述使用新收集的材料的数据。我们还将两个古老的种（流苏猴头菌Hericium fimbrillatum和肉齿菌Sarcodon sagofoetidus）从东亚水螅属转移到其他属中。
ABSTRACT Hydnum (Hydnaceae, Basidiomycota) exhibits endemic species diversity in East Asia; however, few comprehensive systematic studies have been conducted to date. Here, we performed morphological, ecological, phylogenetic, and biological evaluations of the taxonomy of Hydnum species in Japan. In total, 186 Japanese Hydnum specimens were used for morphological observations. Phylogenetic trees were constructed using sequence data of nuc rDNA internal transcribed spacer ITS1-5.8S-ITS2 (ITS) region and a portion of translation elongation factor 1-α (tef1). Intra- and interspecific mating tests using 78 monokaryotic strains of 13 species did not conflict with species delimitation inferred from their ITS and tef1 phylogenetic relationships. This study provides detailed morphological descriptions of 15 rigorously identified species from Japan, nine of which are described as new: H. alboluteum, H. albopallidum, H. pinicola, H. itachiharitake, H. minospororufescens, H. orientalbidum, H. subberkeleyanum, H. tomaense, and H. tottoriense. Three species documented in this work are new to Japan: H. boreorepandum, H. mulsicolor, and H. umbilicatum. The remaining three species (H. cremeoalbum, H. minus, and H. repando-orientale), previously reported from Japan, are redescribed using data from newly collected materials. We also transferred two old species (Hericium fimbrillatum and Sarcodon nauseofoetidus) from East Asian Hydnum into other genera.