{"title":"<i>Coprinopsis cinerea</i> Cla4 protein kinase is required for the assembly of the hyphal tip apparatus that enables the rapid linear growth of apical cells.","authors":"Tetsuya Kakizaki, Koh Sato, Keishi Osakabe, Hajime Muraguchi","doi":"10.47371/mycosci.2024.10.005","DOIUrl":"10.47371/mycosci.2024.10.005","url":null,"abstract":"<p><p>The <i>C. cinerea</i> septins are observed at the hyphal tip and septum in the growing vegetative hyphae. In <i>Saccharomyces cerevisiae</i>, septin dynamics have been suggested to be regulated by septin phosphorylation through protein kinases such as Cla4. To gain insight into the relationship between <i>C. cinerea</i> septins and <i>C. cinerea</i> Cla4 protein kinase (Cc.Cla4), we conducted disruption of the <i>C. cinerea cla4</i> gene (<i>Cc.cla4</i>) by CRISPR/Cas9 system and analyzed the phenotypes of <i>Cc.cla4</i>Δ strains. The vegetative hyphae of the <i>Cc.cla4</i>Δ strains grow slowly in the zigzag shape and are highly branched compared to the wild-type hyphae. The enhanced green fluorescent protein (EGFP) tagged Cc.Cdc3 septin in the <i>Cc.cla4</i>Δ strain was observed in the growing vegetative hyphae. Although EGFP-Cc.Cdc3 signals localized at the plasma membrane of the hyphal tip region, they did not accumulate as a dome with a hole at the hyphal tip as observed in the wild type. Instead, the Cc.Cdc3 was found to stay at the hyphal tip, which split into two tips thereafter. These results suggest that Cc.Cla4 is required for assembly of the hyphal tip apparatus that enables the rapid linear growth of the apical cells.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"65 6","pages":"307-316"},"PeriodicalIF":1.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12119245/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Long-term effects of forest management on the dynamics of <i>Tricholoma matsutake</i> harvest over 41 years in a <i>Pinus densiflora</i> forest in Nagano Prefecture, Japan.","authors":"Hitoshi Furukawa, Koudai Tokuoka, Aira Mizuno, Kazuhiro Katagiri, Kazuhiko Masuno, Yujiro Tanaka, Shinjiro Oya, Akiyoshi Yamada","doi":"10.47371/mycosci.2024.09.003","DOIUrl":"10.47371/mycosci.2024.09.003","url":null,"abstract":"<p><p><i>Tricholoma matsutake</i> is an important wild edible mycorrhizal mushroom in Japan. The domestic matsutake harvest has been declining for 80 y. Nagano Prefecture, a central region of Japan, is the area that has been most productive of matsutake during the past 20 y. To study how matsutake harvesting was affected by forest management, an experimental site was established in a pine forest in Nagano Prefecture in 1980. Two plots were established: a managed plot (MP) in which all trees except pine were cut, pine trees were thinned, and soil litter layer was removed; and a control plot (CP) with no forest management. The numbers of matsutake fruiting bodies were recorded annually in both plots for 41 y. The annual matsutake harvest was stable in the MP but decreased in the CP, while the number of shiro increased in the MP and was stable at the low level in the CP. These trends were suggested to be affected significantly by the thicker humus layer and large root biomass other than pines in the CP. This is the longest record of matsutake harvest in the managed forest, which reveals the importance of such long-term forest management for the sustainable matsutake harvesting.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"65 6","pages":"298-306"},"PeriodicalIF":1.5,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12119244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"<i>Sclerotinia borealis</i> and its varieties, var. <i>subarctica</i> var. nov. and var. <i>okhotskana</i>, var. nov.","authors":"Izumi Saito, Oleg B Tkachenko, Shiro Kuninaga, Naoyuki Matsumoto, Tamotsu Hoshino","doi":"10.47371/mycosci.2024.10.002","DOIUrl":"10.47371/mycosci.2024.10.002","url":null,"abstract":"<p><p><i>Sclerotinia borealis</i> is among the most psychrophilic snow mold pathogen, mainly attacking Poaceae crops such as winter wheat and forage grasses as well as non-Poaceae plants under snow. Isolates were collected through the extensive surveys from North Atlantic islands through European and Asian Russia to Japan. Morphological characterization as well as the effects of temperature and water potential on mycelial growth defined three varieties, i.e., vars. <i>borealis</i>, <i>subarctica</i>, and <i>okhotskana</i>. Phylogenetic analyses based on ITS and EF1-α regions of genomic DNA indicated the monophyly of <i>S. borealis</i> and supported varietal differentiation.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"65 6","pages":"317-327"},"PeriodicalIF":1.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12119246/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MycosciencePub Date : 2024-11-20eCollection Date: 2025-01-01DOI: 10.47371/mycosci.2024.09.001
Wataru Aoki, Masaki Fukuda, Akiyoshi Yamada
{"title":"Two new <i>Tricholoma</i> species in the sect. <i>Genuina</i> from pine forests in Japan.","authors":"Wataru Aoki, Masaki Fukuda, Akiyoshi Yamada","doi":"10.47371/mycosci.2024.09.001","DOIUrl":"10.47371/mycosci.2024.09.001","url":null,"abstract":"<p><p>\"<i>Matsushimeji</i>\" identified as <i>Tricholoma albobrunneum</i> belonging to sect. <i>Genuina</i> is an edible mushroom commonly used in Japan. This species has been suggested to include another cryptic species with common morphological characteristics and identical internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA (nuc rDNA). We compared <i>T</i>. <i>albobrunneum</i> specimens sampled in Japan and Denmark, including the holotype. Phylogenetic analyses of nuc rDNA ITS and intergenic spacer 1 (IGS1) regions, and <i>tef-1a</i> and <i>rpb2</i> genes identified two phylogroups in Japanese <i>T</i>. <i>albobrunneum</i>. In addition, both Japanese phylogroups of <i>T</i>. <i>albobrunneum</i> were distinguished from European <i>T</i>. <i>albobrunneum</i>. Concatenated phylogenetic tree analysis based on these four DNA regions also distinguished two Japanese clades within <i>T</i>. <i>albobrunneum</i>. Here, we report two new species, <i>T</i>. <i>matsushimeji</i> distributed on Honshu Island under two-needle pines and <i>T</i>. <i>miyama-matsushimeji</i> on Rishiri Island under a five-needle pine from Japan.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"65 6","pages":"278-287"},"PeriodicalIF":1.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12119243/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efficient PCR - based Approach for Rapid Identification of Earth Star Mushrooms Employing Species-Specific Primers.","authors":"Tharnrat Kaewgrajang, Leela Nakpong, Yatawee Foongchomchoi, Chatchai Ngernsaengsaruay, Runchida Khunkrai, Kantida Bunlerlerd, Sasitorn Hasin, Itsarapong Voraphab, Baramee Sakolrak, Penpitcha Choosa-Nga, Cherdchai Phosri, Warong Suksavate, Mingkwan Nipitwattanaphon","doi":"10.47371/mycosci.2024.09.002","DOIUrl":"10.47371/mycosci.2024.09.002","url":null,"abstract":"<p><p><i>Astraeus</i> species are valuable edible ectomycorrhizal mushrooms, particularly in Asia. The partial hypogenous nature of <i>Astraeus</i> fruit bodies in soil present challenges for sample collection and studying species distribution. In this study, we developed a PCR-based approach for identifying <i>Astraeus</i>. Two universal primers (AUPF1/AUPR1 and AUPF3/AUPR3) and specific primers for <i>A</i>. <i>asiaticus</i> (AAF4/AAR4), <i>A</i>. <i>odoratus</i> (AOF4/AOR4), and <i>A</i>. <i>sirindhorniae</i> (ASF2/ASR4) were designed based on the alignment of internal transcribed spacer sequences from various <i>Astraeus</i> species. Primer verification was performed by generating amplicons from extracted DNA of <i>Astraeus</i> fruit bodies and 130 soil samples collected from beneath various host plants of <i>Astraeus</i> spp. These novel primers were efficient and precise in identifying <i>Astraeus</i> species. Our results have implications for multi-sample assays for <i>Astraeus</i> identification and investigations into species distribution through large-scale inventories.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"65 6","pages":"288-297"},"PeriodicalIF":1.4,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12119242/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MycosciencePub Date : 2024-10-10eCollection Date: 2025-01-01DOI: 10.47371/mycosci.2024.08.001
Alena Kubátová, Bernd Kunz, Vít Hubka
{"title":"Reintroducing <i>Akanthomyces ampullifer</i>: providing genetic barcodes, culture, and updated description for the dipteran pathogen rediscovered in Germany.","authors":"Alena Kubátová, Bernd Kunz, Vít Hubka","doi":"10.47371/mycosci.2024.08.001","DOIUrl":"10.47371/mycosci.2024.08.001","url":null,"abstract":"<p><p>The genus <i>Akanthomyces</i> (<i>Ascomycota, Hypocreales</i>) includes entomopathogenic species known to infect a variety of insects and spiders. In this study, we present the first isolate of <i>A. ampullifer</i> characterized by molecular methods, found on dead bodies of the common cave limoniid <i>Limonia nubeculosa</i> (<i>Diptera</i>) in the subterranean spaces of southwestern Germany. In total, seven specimens exhibited distinctive morphological traits that, when compared with historical records, confirm their identification as <i>A. ampullifer</i>-particularly noted for its affinity to dipteran hosts. Absent from culture collections and molecular repositories, this species has eluded detailed scientific documentation using modern methods. Our research bridges this knowledge gap, providing the first genetic identification barcodes of five genes, living culture, cultivation requirements, and an updated description. This overlooked fungus is phylogenetically most closely related to the species <i>A. pyralidarum</i>, <i>A. laosensis</i>, and some other species mostly associated with adult moths. It demonstrates a unique morphological signature with monoblastic phialides forming a layer on the surface of synnemata and produces long, cylindrical, chain-forming conidia. It prefers lower temperatures, exhibiting an inability to grow at 25 °C, coupled with notably slow growth in culture.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"65 6","pages":"260-269"},"PeriodicalIF":1.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12119187/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MycosciencePub Date : 2024-10-09eCollection Date: 2025-01-01DOI: 10.47371/mycosci.2024.08.002
Masahide Yamato, Muneyuki Ohmae, Takamichi Orihara, Ryota Kusakabe, Bruno Tomio Goto, Janusz Błaszkowski
{"title":"Molecular phylogeny, morphology, mycorrhizal symbiosis, and putative distribution of the arbuscular mycorrhizal fungus <i>Epigeocarpum japonicum</i> (<i>Glomeraceae</i>).","authors":"Masahide Yamato, Muneyuki Ohmae, Takamichi Orihara, Ryota Kusakabe, Bruno Tomio Goto, Janusz Błaszkowski","doi":"10.47371/mycosci.2024.08.002","DOIUrl":"10.47371/mycosci.2024.08.002","url":null,"abstract":"<p><p>We collected in Japan five sporocarpic specimens morphologically identical to those of <i>Epigeocarpum japonicum</i>, a recently described <i>Glomeromycota</i> species. Although 18S-ITS-28S nuc rDNA sequences obtained from these sporocarps showed high sequence variability, phylogenetic analyses based on 18S-ITS-28S, the largest subunit of the RNA polymerase II (<i>rpb1</i>) gene, and concatenated sequences of the two loci convincingly demonstrated the identity of these sporocarps to <i>E. japonicum</i>. Importantly, the 18S-ITS-28S+<i>rpb1</i> analyses highlighted the key role of <i>rpb1</i> sequences in reconstructing the phylogenies of <i>Glomeromycota</i> taxa with strongly divergent rDNA sequences. Upon inoculation with sporocarpic spores, <i>E. japonicum</i> formed mycorrhiza with arbuscules and vesicles, which was not confirmed in the original description of the species. Comparisons of <i>E. japonicum</i> 18S sequences with <i>Glomeromycota</i> DNA sequences available in a public database indicated that <i>E. japonicum</i> is a cosmopolitan species and is mainly associated with plants in natural habitats such as grasslands, shrublands, and forests. Phylogenetic analyses also confirmed the autonomy of <i>E. crypticum</i>, another known species of the genus <i>Epigeocarpum</i> whose sporocarps were originally found in Brazil.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"65 6","pages":"270-277"},"PeriodicalIF":1.4,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12120553/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MycosciencePub Date : 2024-09-20eCollection Date: 2024-01-01DOI: 10.47371/mycosci.2024.05.004
Hiroyasu Doi, Ayaka Mishima, Ryuichiro Ikeda
{"title":"<i>Spencermartinsiella japonica</i> f.a., sp. nov., a novel yeast species isolated from biofilm in a reverse osmosis system.","authors":"Hiroyasu Doi, Ayaka Mishima, Ryuichiro Ikeda","doi":"10.47371/mycosci.2024.05.004","DOIUrl":"10.47371/mycosci.2024.05.004","url":null,"abstract":"<p><p>Novel <i>Spencermartinsiella</i> strains, JCM 35526<sup>T</sup> and 261-2C, were isolated from biofilm formed on a reverse osmosis membrane in the phosphate recovery system of a semiconductor factory. Morphological, biochemical, physiological, and chemotaxonomic analyses as well as sequence analysis of the concatenated internal transcribed spacer region and D1/D2 domains of the large subunit of the rRNA gene confirmed that strains JCM 35526<sup>T</sup> and 261-2C, were distinct from all currently known <i>Spencermartinsiella</i> species. The holotype and isotype strains of the new species, which is named <i>Spencermartinsiella japonica</i>, are JCM 35526<sup>T</sup> and MUCL 58310<sup>I</sup>, respectively.</p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"65 5","pages":"224-227"},"PeriodicalIF":1.5,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11664056/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Gene expression analysis for stem browning in the mushroom Lentinula edodes","authors":"Jili Zhang, Yuki Tanaka, Akiko Ono, Takumi Sato, Toshiyuki Suzuki, Saya Akimoto, Yuki Tanaka, Shoko Iwami, Aya Iwamoto, Norio Tanaka, Naotake Konno, Tomohiro Suzuki","doi":"10.47371/mycosci.2024.07.003","DOIUrl":"https://doi.org/10.47371/mycosci.2024.07.003","url":null,"abstract":"</p><p>The mushroom <i>Lentinula edodes</i>, is consumed worldwide and has high industrial value because of its rich content of bioactive compounds such as ergothioneine and eritadenine. Currently, mainstream artificial cultivation methods for this mushroom typically use synthetic logs. However, browning of the stem’s interior (stem browning) has been observed during the cultivation in some <i>L. edodes</i> strains. Although browning does not affect the taste or other qualities of the mushroom, it gives consumers a perception of “poor quality”, and is a major challenge for producers. To identify the genes responsible for stem browning in this mushroom, we performed differential gene expression analysis during stem browning development and quantified it using real-time PCR. Our results indicated that certain oxidoreductases, such as tyrosinase and laccase, were significantly upregulated during the progression of stem browning. The results obtained in the present study provide valuable insights to address the problem of stem browning in mushroom <i>L. edodes</i>.</p>\u0000<p></p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"6 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Morphological responses of two Aspergillus oryzae strains to various metal ions at different concentrations","authors":"Liyun Liu, Kanae Sakai, Takumi Tanaka, Ken-Ichi Kusumoto","doi":"10.47371/mycosci.2024.04.001","DOIUrl":"https://doi.org/10.47371/mycosci.2024.04.001","url":null,"abstract":"</p><p><i>Aspergillus</i> species take up various metal ions from environment. The morphology of <i>Aspergillus oryzae</i> strains can vary under the influence of various metal ions. Here, the effects of Ti<sup>4+</sup>, V<sup>3+</sup>, Sr<sup>2+</sup>, Ba<sup>2+</sup>, Al<sup>3+</sup>, Fe<sup>2+</sup>, Zn<sup>2+</sup>, Mn<sup>2+</sup>, Ca<sup>2+</sup>, and Cu<sup>2+</sup> on morphological parameters of <i>A. oryzae</i> strains RIB40 and RIB143 were estimated. Colony diameter, conidiation, vesicle head size, and stipe width in both strains varied with concentration. Ti<sup>4+</sup>, Sr<sup>2+</sup>, Ba<sup>2+</sup>, Al<sup>3+</sup>, Fe<sup>2+</sup>, and Ca<sup>2+</sup> affected conidiation in similar tendency between two strains. The effects of Ti<sup>4+</sup>, V<sup>3+</sup>, Sr<sup>2+</sup>, and Ba<sup>2+</sup> on the morphology of <i>A. oryzae</i> are reported here for the first time. Induction of growth of both strains by 0.0001% Ti<sup>4+</sup> may help the fermentation industry. Induction of conidiation in RIB40 by 0.001% Cu<sup>2+</sup> confirmed previous results that low concentrations of Cu<sup>2+</sup> promote the growth of <i>Aspergillus</i>. The most novel finding is that 0.001% Zn<sup>2+</sup> increased the vesicle head size in RIB40; possible reasons are discussed.</p>\u0000<p></p>","PeriodicalId":18780,"journal":{"name":"Mycoscience","volume":"7 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}