Description of a new species of Gerhardtia (Lyophyllaceae, Agaricales) from Japan based on morphological and molecular phylogenetic analyses and live culture characteristics.

IF 1.5 4区 生物学 Q4 MYCOLOGY Mycoscience Pub Date : 2022-01-01 DOI:10.47371/mycosci.2021.09.001
Naoki Endo, Moe Takahashi, Kosuke Nagamune, Kaito Oguchi, Ryo Sugawara, Kozue Sotome, Akira Nakagiri, Nitaro Maekawa
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引用次数: 1

Abstract

We describe a new species of Gerhardtia from Japan based on basidiomata morphology, live culture characteristics, and molecular phylogenetic analyses. Gerhardtia venosolamellata is found on broad-leaf litter, and is characterized by tricholomatoid to marasmioid basidiomata, an off-white to pale salmon-pink pileus surface with faint marginal striae, subdistant lamellae with lateral veins, a tomentose to strigose stipe base with hyphal strands generating arthroconidia measuring 4-7 × 2-3 µm, cyanophilic, elongate-ellipsoid to cylindrical, slightly verrucose or undulate basidiospores measuring 4.5-6 × 2.5-3 µm, and cyanophilic basidia measuring 25-35 × 5-6 µm and containing siderophilous granules. Phylogenetic analyses based on the internal transcribed spacer and large subunit regions of the fungal nrDNA indicates that G. venosolamellata is related to G. sinensis and G. highlandensis, but differs from the former with respect to basidiomata color, basidiospore shape, and habitat. An isotype specimen of G. highlandensis exhibited relatively close lamellae without veins, and slightly larger basidiospores (4.5-6.5 × 2.5-3 µm). Cultured mycelia of G. venosolamellata produced arthroconidia measuring 4.5-8.5 × 2.5-3 µm with both schizolytic and rhexolytic secession on MA and PDA media, and chlamydospores occasionally covered with crystals on MA and MYG media.

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基于形态、分子系统发育分析和活体培养特征的日本野苔属一新种描述。
根据担子瘤形态、活培养特征和分子系统发育分析,描述了一种来自日本的Gerhardtia新种。生生于阔叶枯落物上,其特征为:绒瘤状到麻瘤状担子孢子,灰白色到浅橙红色的菌毛表面有微弱的边缘条纹,近距离的片层有侧脉,被绒毛状到糙伏毛的柄基部,菌丝链产生的节孢子长4-7 × 2-3 μ m,嗜蓝的,长椭圆形到圆柱形,微疣状或波状的担子孢子长4.5-6 × 2.5-3 μ m,嗜蓝担子大小为25-35 × 5-6µm,含有嗜铁颗粒。基于真菌nrDNA内部转录间隔区和大亚基区域的系统发育分析表明,venosolamellata与sinensis和highlandensis有亲缘关系,但在担子孢子颜色、担子孢子形状和栖息地方面与前者有所不同。一个同型标本显示相对紧密的薄片,无脉,担子孢子略大(4.5 ~ 6.5 × 2.5 ~ 3µm)。在MA和PDA培养基上培养的丝菌体产生4.5-8.5 × 2.5-3µm的节孢子,具有分裂分裂和溶裂分裂作用,在MA和MYG培养基上偶尔有衣原体孢子被晶体覆盖。
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来源期刊
Mycoscience
Mycoscience MYCOLOGY-
CiteScore
3.00
自引率
7.10%
发文量
32
审稿时长
3 months
期刊介绍: Mycoscience is the official English-language journal of the Mycological Society of Japan and is issued bimonthly. Mycoscience publishes original research articles and reviews on various topics related to fungi including yeasts and other organisms that have traditionally been studied by mycologists. The research areas covered by Mycoscience extend from such purely scientific fields as systematics, evolution, phylogeny, morphology, ecology, physiology, biochemistry, genetics, and molecular biology, to agricultural, medical, and industrial applications. New and improved applications of well-established mycological techniques and methods are also covered.
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