研究者詳細 - 糟谷　大河

論文 - 糟谷　大河

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Two species of Rickenella, R. indica and R. mellea, new to Japan

Taiga Kasuya, Takashi Maruyama, Mihoko Uzawa, Kentaro Hosaka

Japanese Journal of Mycology 66 35 - 46 2025年05月

研究論文（学術雑誌）, 共著, 筆頭著者, 責任著者, 査読有り

The present study reports the identification of two newly recorded species of the genus Rickenella, R. indica and R. mellea, in Japan. Small (1-3 mm wide), parabolic to convex, and never becoming applanate or infundibuliform pileus are characteristic features of R. indica. Rickenella mellea is a subalpine species and it is characterized by its honey-colored, yellowish-beige to reddish yellow-pileus and stipe. Molecular phylogenetic analysis using the ITS region and the LSU of the nuclear rDNA supported their identification based on morphological observations. A key to the known Japanese species of Rickenella and morphologically similar taxa is provided.

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A new record of Amanita sinocitrina from Japan and a description of its ectomycorrhizae associated with Japanese red pine

Naoki Endo, Mitsuyo Nishimura, Taiga Kasuya, Ryo Sugawara, Kosuke Nagamune, Shuji Ushijima, Yoshihiro Takemura, Dai Nagamatsu, Akira Nakagiri

Mycoscience 66 （ 2 ） 145 - 154 2025年03月

研究論文（学術雑誌）, 共著, 査読有り

Exobasidium setsutaiense sp. nov. (Exobasidiaceae) causing leaf blister on Rhododendron semibarbatum in Japan

Hideyuki Nagao, Takamichi Orihara, Taiga Kasuya

Phytotaxa （Magnolia Press） 684 78 - 92 2025年02月

研究論文（学術雑誌）, 共著, 最終著者, 査読有り

Novel tetrapeptides, Tengupeptins A and B, produced by Lecanicillium aphanocladii FKI-9593 fungal strain

Hiroki Kojima, Yoshihiro Watanabe, Mayuka Higo, Taiga Kasuya, Kenichi Nonaka, Masato Iwatsuki, Akihiro Sugawara

Chemistry & Biodiversity 2024 （ 0 ） e202403050 2024年12月

研究論文（学術雑誌）, 共著, 査読有り

The discovery of novel natural products through the exploration of distinctmicroorganisms is crucial for advancing drug discovery research. In this study, we focus on a unique environmental resource, microbial masses known as “Tengu-no-Mugimeshi.” From the culture broth of Lecanicillium aphanocladii FKI-9593, isolated from Tengu-no-Mugimeshi collected at Mount Kurohime, Nagano Prefecture, Japan, we report the isolation of two novel tetrapeptides, tengupeptins A (1) and B (2), as well as the known compound oosporein. Structural analysis revealed that tengupeptins are composed of four amino acids: L-glutamic acid for 1 (or L-pyroglutamic acid for 2), (Z)-α,β-didehydro tryptophan (ΔZTrp), (Z)-α,β-didehydro-phenylalanine (ΔZPhe), and L-aspartic acid. Notably, dehydroamino acids containing an aromatic moiety conjugated with a double bond connected via two or more consecutive linkages are rare in natural products, and the ΔZTrp-ΔZPhe fragment represents the first example. The isolation of secondary metabolites from filamentous fungi inhabiting unique environments, such as Tengu-no-Mugimeshi, is anticipated to offer significant potential for future research.

Isolation of Exobasidium vexans from the lesions of blister blight of tea and the prevalence of anamorphic structures in culture

Hideyuki Nagao, Takamichi Orihara, Taiga Kasuya

茶業研究報告 138 23 - 31 2024年12月

研究論文（学術雑誌）, 共著, 最終著者, 査読有り

DNA barcoding of Pleurotus cyatheae, an “extinct” mushroom species from Japan

Kentaro Hosaka, Kyung-Ok Nam, Taiga Kasuya

Bulletin of the National Museum of Nature and Science, Series B (Botany) 50 （ 2 ） 41 - 49 2024年05月

研究論文（大学，研究機関等紀要）, 共著, 最終著者, 査読有り

A new distributional record of Elaphomyces fuscus from Japan: as a new host of Tolypocladium japonicum

Taiga Kasuya, Ei Kawahara, Kentaro Hosaka

Truffology 7 1 - 8 2024年05月

研究論文（学術雑誌）, 共著, 筆頭著者, 責任著者, 査読有り

日本新産種Marasmius macrocystidiosus（ハラタケ目，ホウライタケ科）

丸山隆史, 糟谷大河

日本菌学会会報 65 1 - 8 2024年05月

研究論文（学術雑誌）, 共著, 最終著者, 査読有り

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Gymnosporangium mori comb. nov. (Pucciniales) for Caeoma mori (≡ Aecidium mori) inferred from phylogenetic evidence

Taiga Kasuya, Kentaro Hosaka, Jing-Xin Ji, Makoto Kakishima

Mycoscience 65 79 - 85 2024年03月

研究論文（学術雑誌）, 共著, 筆頭著者, 責任著者, 査読有り

Caeoma mori (≡ Aecidium mori), known as the mulberry rust which is an anamorphic rust fungus forming only aecidioid uredinia, were found on Morus alba in Ibaraki and Saitama Prefectures, Japan. Molecular phylogenetic analyses using the combined dataset of sequences from 28S and 18S of the nuclear ribosomal RNA gene and Cytochrome-c-oxidase subunit 3 of the mitochondrial DNA revealed that this anamorphic rust fungus was a member of the clade composed of the genus Gymnosporangium. Therefore, a new combination, Gymnosporangium mori is proposed for this species. Additionally, a new combination, G. brucense for Roestelia brucensis is proposed by phylogenetic evidence.

ミュージアムパーク茨城県自然博物館構内における大型菌類リスト・補遺

北沢弘美, 牧野純子, 真藤憲政, 今村敬, 稲葉義智, 糟谷大河, 鵜沢美穂子

茨城県自然博物館研究報告（ 26 ） 63 - 86 2023年12月

研究論文（大学，研究機関等紀要）, 共著, 査読有り

Russula granulata new to Japan, collected in mixed subalpine forests of Nagano Prefecture

Yosihto Shimono, Taiga Kasuya, Yosuke Matsuda

Japanese Journal of Mycology 64 67 - 77 2023年11月

研究論文（学術雑誌）, 共著, 査読有り

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放送大学の面接授業としての野外体験活動－地域の自然誌をテーマにして－

植木岳雪, 糟谷大河

日本生涯教育学会論集 44 95 - 104 2023年09月

研究論文（学術雑誌）, 共著, 査読有り

First report of a subhypogeous basidiomycete, Scleroderma yunnanense (Boletales) from Japan

Taiga Kasuya, Kazumasa Imai, Kentaro Hosaka

Truffology 6 1 - 6 2023年07月

研究論文（学術雑誌）, 共著, 筆頭著者, 責任著者, 査読有り

A subhypogeous sclerodermataceous fungus was collected in Nagoya, Aichi Prefecture, central Japan. Based on morphological observations and phylogenetic analyses using nuclear ribosomal DNA sequences, the present fungus was identified as Scleroderma yunnanense, belonging to Sclerodermataceae (Boletales). Scleroderma yunnanense is new to Japan and characterized by not stellately dehiscent basidiomata when mature, thick (2–7 mm) peridium covered by cream to pale yellowish scales, basidiomata covered with whitish mycelial strands, clamped hyphae, and globose to subglobose basidiospores densely covered with pyramidal warts.

Hydropodia silvae-nipponicae (Porotheleaceae), a new species from evergreen broad-leaved forests in Japan

Taiga Kasuya, Reiichiro Kaneko, Seiji Takehashi, Kentaro Hosaka

Mycoscience 64 116 - 122 2023年07月

研究論文（学術雑誌）, 筆頭著者, 責任著者

Hydropodia silvae-nipponicae, a new agaric species was described based on the specimens collected from evergreen broad-leaved forests in Japan. The present new species is distinct from H. subalpina, the type species of the genus by morphological characteristics and nuclear rDNA sequences. Hydropodia silvae-nipponicae is characterized by its nodulose cystidium-like terminal elements of pileipellis, cylindrical to clavate pileocystidia with irregular excrescences, and dimorphic pleurocystidia. It is the second species belonging to the genus Hydropodia.