Mycobiology最新文献_第2页

Phylogenetic Analysis and Nutritional Evaluation of Laetiporus Species in Korea. 韩国大黄属植物的系统发育分析及营养评价。

IF 2 4区生物学

Mycobiology Pub Date : 2026-01-08 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2607864

Mi-Jeong Park, Ae Hyeon Nam, Yeon Jun Jeong, Ji Min Woo, Yeongseon Jang, Youngki Park, Kang-Hyeon Ka, Kyoung Tae Lee

{"title":"Phylogenetic Analysis and Nutritional Evaluation of Laetiporus Species in Korea.","authors":"Mi-Jeong Park, Ae Hyeon Nam, Yeon Jun Jeong, Ji Min Woo, Yeongseon Jang, Youngki Park, Kang-Hyeon Ka, Kyoung Tae Lee","doi":"10.1080/12298093.2025.2607864","DOIUrl":"10.1080/12298093.2025.2607864","url":null,"abstract":"Within the order Polyporales, the genus Laetiporus includes brown rot-causing basidiomycetes, popularly known as \"chicken of the woods\" or \"crab of the woods.\" While these fungi hold significant edible and medicinal value, comprehensive molecular and biochemical investigations of native Korean populations are limited. In this study, we investigated the phylogenetic relationships and nutritional profiles of wild Laetiporus strains collected in Korea. Phylogenetic analysis of ITS sequences from 21 wild strains and 39 previously reported specimens found in Korea confirmed that L. versisporus and L. cremeiporus are the predominant native species in Korea, rather than L. sulphureus as previously documented. Nutritional evaluation revealed protein content in L. versisporus was 11.3% while that in L. cremeiporus was in the range 9.1-18.5% (average 14.5%). Free amino acid profiling showed that, except for cysteine, which was not analyzed, all essential amino acids were present in L. cremeiporus. In L. versisporus, all essential amino acids were detected except for methionine. Glucan analysis demonstrated substantial β-glucan contents, with L. versisporus exhibiting 25.7% and L. cremeiporus strains ranging from 15.1% to 34.8%. Total glucan content reached up to 40.7% in L. versisporus and 39.3% in certain L. cremeiporus strains. These findings would enhance taxonomic understanding of Laetiporus in Korea and establish the nutritional potential of Laetiporus as functional food ingredients and alternative protein sources.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"112-119"},"PeriodicalIF":2.0,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12784636/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145952556","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}

引用次数: 0

Analysis of Volatile Organic Compounds and Comparison of Heat Resistance Related Gene Expression in Pleurotus ostreatus Under Heat Stress. 热胁迫下平菇挥发性有机物分析及耐热性相关基因表达比较

IF 2 4区生物学

Mycobiology Pub Date : 2026-01-08 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2599029

Jeong-Heon Kim, Youn-Jin Park, Myoung-Jun Jang

{"title":"Analysis of Volatile Organic Compounds and Comparison of Heat Resistance Related Gene Expression in Pleurotus ostreatus Under Heat Stress.","authors":"Jeong-Heon Kim, Youn-Jin Park, Myoung-Jun Jang","doi":"10.1080/12298093.2025.2599029","DOIUrl":"10.1080/12298093.2025.2599029","url":null,"abstract":"Heat stress induces oxidative stress in Pleurotus ostreatus (P. ostreatus), inhibiting the growth of both mycelium and fruiting bodies. While various studies have analyzed the physiological responses of P. ostreatus under heat stress conditions, comprehensive research comparing physiological responses in mycelium and fruiting bodies through metabolomic analysis of volatile organic compounds has not been conducted. In this study, we invested the levels of volatile organic compounds (VOCs), the activity of VOC synthesis-related enzymes, and the expression of heat resistance-related genes in mycelium and fruiting bodies exposed to heat stress. The total VOC levels measured in mycelium increased, whereas those in fruiting bodies decreased, indicating contrasting responses. In fruiting bodies, following heat stress, the synthesis of 1-Octen-3-ol was inhibited by glutathione peroxidase (GPx), and its conversion to 3-Octanone was accelerated by alcohol dehydrogenase (ADH), resulting in a significant decrease in 1-Octen-3-ol levels. In mycelium, both GPx gene expression levels and ADH activity remained unchanged under heat stress conditions, and 1-Octen-3-ol levels did not decrease. Comparison of heat resistance-related gene expression through quantitative PCR revealed that in mycelium, the expression of genes related to trehalose and heat shock proteins increased, while in fruiting bodies, the expression of genes related to antioxidant enzymes, including GPx, increased. In conclusion, we identified distinct heat resistance responses in mycelium and fruiting bodies, which had different effects on VOC synthesis, leading to contrasting changes.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"100-111"},"PeriodicalIF":2.0,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12784641/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145952516","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}

引用次数: 0

Unveiling Phyllosphere Fungal Communities in Phytophthora infestans-Infected Potatoes Through ITS Amplicon and FTIR Approaches in the Indonesian Highlands. 利用ITS扩增子和FTIR方法揭示印尼高原马铃薯马铃薯层球真菌群落

IF 2 4区生物学

Mycobiology Pub Date : 2026-01-08 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2610589

Abdul Latief Abadi, Muhammad Akhid Syib'li, Irisa Trianti, Valia Istifada, Sholikah Widyanitta Rachmawati, Bayu Aji Pamungkas

{"title":"Unveiling Phyllosphere Fungal Communities in Phytophthora infestans-Infected Potatoes Through ITS Amplicon and FTIR Approaches in the Indonesian Highlands.","authors":"Abdul Latief Abadi, Muhammad Akhid Syib'li, Irisa Trianti, Valia Istifada, Sholikah Widyanitta Rachmawati, Bayu Aji Pamungkas","doi":"10.1080/12298093.2025.2610589","DOIUrl":"10.1080/12298093.2025.2610589","url":null,"abstract":"Highland potato areas in East Java, Indonesia-Sumber Brantas and Tosari-face severe late blight caused by Phytophthora infestans. We profiled phyllosphere fungal communities (phylloplane plus leaf endosphere) on symptomatic potato leaves and examined how management contexts may relate to these assemblages. Leaves from \"Granola Lembang\" (Sumber Brantas) and \"Granola Kembang\" (Tosari) were analyzed using ITS amplicon sequencing (Nanopore) and Fourier-transform infrared (FTIR) spectroscopy. After normalization to relative abundances, α-diversity (Observed OTUs, Chao1, Shannon, Simpson) was higher in Tosari; communities were dominated by Ascomycota (putative endophytes/saprotrophs), whereas Sumber Brantas showed lower overall diversity with higher Mucoromycota. PCA of FTIR spectra separated samples by site, consistent with cross-site biochemical differences; however, we do not infer that FTIR differences are caused by community composition, nor that management variables are causal drivers. Instead, we treat management as contextual information that co-occurs with site, cultivar, and environmental/soil differences. Causal inference is not warranted given the two-site observational design, symptomatic-leaf sampling, different cultivars, and limited replication. Within these constraints, our integrative profiling provides hypothesis-generating baselines and suggests that management compatible with reduced chemical inputs may be associated with richer phyllosphere assemblages of potential biocontrol relevance in Indonesian highlands.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"120-132"},"PeriodicalIF":2.0,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12784631/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145952624","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}

引用次数: 0

The Volatilomes of Penicillium crustosum G10 and Penicillium solitum SA. 青霉菌G10和青霉菌SA挥发物的研究。

IF 2 4区生物学

Mycobiology Pub Date : 2026-01-05 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2609411

Yumeng Zhang, Xiaojuan Gao, Guohua Yin, Joan W Bennett

{"title":"The Volatilomes of Penicillium crustosum G10 and Penicillium solitum SA.","authors":"Yumeng Zhang, Xiaojuan Gao, Guohua Yin, Joan W Bennett","doi":"10.1080/12298093.2025.2609411","DOIUrl":"10.1080/12298093.2025.2609411","url":null,"abstract":"Penicillium crustosum and Penicillium solitum are common molds known for their ability to thrive at cool temperatures and low water activities. They are frequently associated with the contamination of cheeses, pome fruits, and meats. While many strains of these species are recognized for producing bioactive metabolites, their volatile metabolism remains poorly understood. In this study, a comprehensive gas chromatography-mass spectrometry (GC-MS) was employed to identify and analyze the volatile organic compounds (VOCs) emitted by P. crustosum strain G10 and P. solitum SA. When cultivated on laboratory media, a total of 25 distinct VOCs were identified from P. crustosum G10, and 17 from P. solitum SA. The VOCs produced by G10 were classified into six categories based on their functional groups: alcohols (four compounds), nitriles (three compounds), alkenes (four compounds), ketones (two compounds), esters (five compounds), and alkanes (three compounds). Notably, several of these VOCs have known biological activities. For instance, 2-tetradecanol and benzyl nitrile have been developed as environmentally safe pest control agents; (E)-5-eicosene exhibits anticancer function; and 4-acetylphenoxyacetic acid shows potential for the inhibition of HIV. Additionally, (Z)-7-hexadecene, octadecanal, and 5-dodecyldihydro-2(3H)-furanone are recognized as insect volatile pheromones. The VOCs from P. solitum SA were grouped into four main categories: alcoholic compounds (two VOCs), aromatic compounds (four VOCs), esters (three VOCs), and alkene compounds (three VOCs). The discussion of these compounds' potential applications offers new perspectives on their future utilization.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"89-99"},"PeriodicalIF":2.0,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12777788/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145933970","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}

引用次数: 0

Dark Septate Endophytes Support Komatsuna Growth Under High Temperature Stress and Greenhouse Farming. 暗隔内生菌在高温胁迫和温室栽培下支持小松的生长。

IF 2 4区生物学

Mycobiology Pub Date : 2025-12-31 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2595876

I Gede Karta Satria Wibawa, Kazuhiko Narisawa

{"title":"Dark Septate Endophytes Support Komatsuna Growth Under High Temperature Stress and Greenhouse Farming.","authors":"I Gede Karta Satria Wibawa, Kazuhiko Narisawa","doi":"10.1080/12298093.2025.2595876","DOIUrl":"10.1080/12298093.2025.2595876","url":null,"abstract":"Komatsuna (Brassica rapa var. perviridis) is one of the most common leafy vegetables in Japan. In recent years, the frequent occurrence of abnormally high temperatures is becoming a threat for komatsuna as it is vulnerable to high temperature stress. In natural ecosystems, most plants coexist with endophytic fungi as a strategy to adapt to stressful environments. Among known symbiotic fungi, there are dark septate endophytes (DSEs), which are unique due to their prevalence under stressed environmental conditions. This study aimed to evaluate the use of DSEs to improve komatsuna growth using a greenhouse farming system, as a practice to improve sustainable agriculture. We examined the effect of inoculation with three DSE isolates: Phialocephala fortinii KS.F.6 (Pf), Exophiala pisciphila KS.F.3.4 (Ep) and Veronaeopsis simplex Y34 (Vs), on the growth of komatsuna under high temperature stress. The preliminary experiment showed that inoculation with isolates Ep and Vs reduced the heat injury index and increased the number of surviving plants under 35 °C heat stress. Furthermore, the greenhouse experiment showed that Ep and Vs increase the number of leaves, fresh weight, and dry weight of komatsuna. This is considered the first report of DSE symbiosis potential for komatsuna high-temperature-stress mitigation and growth performance induction.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"68-77"},"PeriodicalIF":2.0,"publicationDate":"2025-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12777763/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145933508","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}

引用次数: 0

Soil Chemistry and Microbial Community Patterns Across Tricholoma matsutake Fairy-Ring Developmental Stages in Yeongju, South Korea. 韩国荣州松茸仙女环发育阶段土壤化学和微生物群落格局

IF 2 4区生物学

Mycobiology Pub Date : 2025-12-30 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2608410

Na-Kyung Kang, Min-Jeong Kang, Gi-Bum Keum, Chanhoon An, Eung-Jun Park, Eun-Kyung Bae

{"title":"Soil Chemistry and Microbial Community Patterns Across Tricholoma matsutake Fairy-Ring Developmental Stages in Yeongju, South Korea.","authors":"Na-Kyung Kang, Min-Jeong Kang, Gi-Bum Keum, Chanhoon An, Eung-Jun Park, Eun-Kyung Bae","doi":"10.1080/12298093.2025.2608410","DOIUrl":"10.1080/12298093.2025.2608410","url":null,"abstract":"This study investigates how shiro developmental stages, soil physicochemical properties, and seasonal variation shape fungal and bacterial communities associated with Tricholoma matsutake in a Pinus densiflora forest in Yeongju, South Korea. Seasonal soil samples from past, present, and future shiro zones were analyzed using ITS and 16S rRNA metabarcoding together with soil chemical measurements. Shiro-driven spatial heterogeneity, rather than seasonality, was the dominant factor structuring microbial communities. Fungal assemblages differed significantly among shiro stages, with exchangeable potassium (K+) emerging as the primary driver and a strong predictor of T. matsutake abundance. Elevated K+ in active shiro zones corresponded to reduced fungal diversity, suggesting competitive exclusion by dominant ectomycorrhizal taxa. In contrast, bacterial communities were shaped mainly by water-soluble iron (Fe), shifting from Acidobacteria-rich assemblages in past zones to Proteobacteria in active zones. The enrichment of siderophore-associated taxa suggests a potential role of Fe acquisition processes, broadly consistent with mechanisms proposed in the mycorrhiza helper bacteria hypothesis, though not directly tested here. Overall, T. matsutake development generates nutrient-specific biogeochemical gradients-K+ for fungi and Fe for bacteria-that reorganize soil microbial communities. These findings underscore tightly linked biotic-abiotic interactions in shiro ecology and highlight microbial and chemical features that may serve as indicators of shiro activity.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"78-88"},"PeriodicalIF":2.0,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12777900/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145934054","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}

引用次数: 0

Pyrenophora Species Associated with Barley and Wheat in Japan. 在日本大麦和小麦中发现的一种pyrenophera。

IF 2 4区生物学

Mycobiology Pub Date : 2025-12-28 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2604407

Perry Lorraine Duran Canare, Hana Tonami, Koharu Sekiguchi, Miyu Fujita, Chiharu Nakashima

{"title":"Pyrenophora Species Associated with Barley and Wheat in Japan.","authors":"Perry Lorraine Duran Canare, Hana Tonami, Koharu Sekiguchi, Miyu Fujita, Chiharu Nakashima","doi":"10.1080/12298093.2025.2604407","DOIUrl":"10.1080/12298093.2025.2604407","url":null,"abstract":"Fungal pathogens of the genus Pyrenophora pose significant threats to barley and wheat production worldwide. Pyrenophora tritici-repentis has long been recognized as the causal agent of yellow spot disease in wheat in Japan. However, preliminary molecular data have suggested the involvement of an additional Pyrenophora species. To clarify the species diversity and phylogenetic relationships of Pyrenophora species on Poaceae plants in Japan, a total of 13 isolates, obtained from symptomatic barley and wheat, along with 37 isolates from culture collections, were analyzed using a concatenated dataset of ITS, LSU, rpb2, and gapdh gene regions. The resultant tree revealed that all examined Japanese isolates previously labeled as Py. tritici-repentis were recognized as Py. trichostoma. Furthermore, these isolates shared a toxin-producing gene. Additionally, some Japanese isolates need to have their labels corrected. These findings indicate greater diversity of Pyrenophora than previously reported in Japan and highlight the need to revise the taxonomy of Pyrenophora species.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"57-67"},"PeriodicalIF":2.0,"publicationDate":"2025-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12777796/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145934330","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}

引用次数: 0

Comparative Evaluation of Disinfectants for Controlling Listeria monocytogenes on Flammulina Velutipes. 防治金针菇单核增生李斯特菌消毒剂的比较评价。

IF 2 4区生物学

Mycobiology Pub Date : 2025-12-28 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2603020

Ja-Yoon Kim, Hye-Sung Park, Kyung-Sook Han, Dong-Shin Kim, Jae-Han Cho

{"title":"Comparative Evaluation of Disinfectants for Controlling Listeria monocytogenes on Flammulina Velutipes.","authors":"Ja-Yoon Kim, Hye-Sung Park, Kyung-Sook Han, Dong-Shin Kim, Jae-Han Cho","doi":"10.1080/12298093.2025.2603020","DOIUrl":"10.1080/12298093.2025.2603020","url":null,"abstract":"Flammulina velutipes is the most widely consumed edible mushroom in Korea, with a unique flavor and texture that support its popularity domestically and internationally. Korea produces approximately 26,000 tons of F. velutipes annually, accounting for 17% of its total mushroom production and generating export revenues of about 126 million USD. However, recent detection of Listeria monocytogenes in F. velutipes has led to product recalls and import restrictions in major markets, including the United States, thereby threatening export competitiveness. L. monocytogenes is a psychrotrophic foodborne pathogen capable of surviving and proliferating at low temperatures, causing severe diseases such as meningitis and sepsis in immunocompromised individuals, and miscarriage or fetal death in pregnant women. This study evaluated the antibacterial efficacy of peracetic acid (PAA) among several disinfectants for controlling Listeria contamination. Treatment with 80 ppm PAA once daily or once every two days effectively inhibited Listeria growth on F. velutipes surfaces without affecting mushroom fresh weight or marketability. Furthermore, PAA treatment suppressed not only Listeria but also other pathogenic microorganisms, suggesting improved overall microbial safety. PAA decomposes into water and oxygen, producing no harmful residues, and is approved for organic food production. Its ease of field application further enhances practicality. These findings indicate that PAA is an effective, eco-friendly method for controlling L. monocytogenes contamination in F. velutipes, and its implementation could strengthen the microbiological safety and export stability of Korean mushrooms in global markets.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"47-56"},"PeriodicalIF":2.0,"publicationDate":"2025-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12777843/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145934277","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}

引用次数: 0

Diversity and Community Structure of Endophytic Fungi Isolated from the Brown Macroalga Sargassum thunbergii in Coastal Regions of Jeju Island, Korea. 济州岛沿海褐藻内生真菌的多样性和群落结构

IF 2 4区生物学

Mycobiology Pub Date : 2025-12-23 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2602987

Ji-Won Kim, Yu-Na Choi, Seong-Eun Kim, Ahn-Heum Eom

{"title":"Diversity and Community Structure of Endophytic Fungi Isolated from the Brown Macroalga Sargassum thunbergii in Coastal Regions of Jeju Island, Korea.","authors":"Ji-Won Kim, Yu-Na Choi, Seong-Eun Kim, Ahn-Heum Eom","doi":"10.1080/12298093.2025.2602987","DOIUrl":"10.1080/12298093.2025.2602987","url":null,"abstract":"Interest in algal endophytic fungi continues to grow as their ecological importance and potential applications in medicine, aquaculture, and environmental biotechnology become increasingly evident. This study used a culture-based approach to characterize the diversity and community structure of endophytic fungi associated with Sargassum thunbergii at five coastal sites on Jeju Island and to examine their relationships with marine environmental factors. Based on isolated and identified strains, we compared among-site community differences and links to environmental variables. In total, 235 isolates representing 94 species across 54 genera were obtained, with Ascomycota comprising 97.9% of all isolates. Community composition differed markedly by site, with high prevalence of several genera, including Didymella and Neocosmospora. α-diversity was higher at western sites (Gosan, Hyeopjae) and lower at northeastern sites (Gimnyeong, Onpyeong), and β-diversity analyses also separated communities among sites. Ordination and constrained analyses identified mean monthly water temperature and dissolved oxygen as the environmental factors most closely associated with community variation. Notably, Neocosmospora solani occurred at all sites, whereas many species were restricted to single locations. These findings are consistent with the idea that the physicochemical characteristics of Jeju's coastal waters may contribute to regional differences in S. thunbergii endophyte communities. This work provides a baseline for understanding alga-fungus interactions around Jeju and highlights the potential of endophyte diversity as a sensitive indicator of coastal environmental change.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"38-46"},"PeriodicalIF":2.0,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12875103/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146143016","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}

引用次数: 0

Respiration and Substrate Utilization by Marine Fungi: Their Ecological Role in an Upwelling Ecosystem. 海洋真菌的呼吸和底物利用：它们在上升流生态系统中的生态作用。

IF 2 4区生物学

Mycobiology Pub Date : 2025-12-10 eCollection Date: 2026-01-01 DOI: 10.1080/12298093.2025.2595881

Marcelo E Fuentes, Renato A Quiñones

{"title":"Respiration and Substrate Utilization by Marine Fungi: Their Ecological Role in an Upwelling Ecosystem.","authors":"Marcelo E Fuentes, Renato A Quiñones","doi":"10.1080/12298093.2025.2595881","DOIUrl":"10.1080/12298093.2025.2595881","url":null,"abstract":"Marine fungi are relevant ecological components of microbial communities and play crucial roles in the degradation of organic matter and the cycling of nutrients in oceanic ecosystems. However, their metabolic adaptations to dynamic, nutrient-rich coastal upwelling environments remain scarcely known. The aim of our research is to contribute to the understanding of the ecological and biogeochemical roles of marine fungi in upwelling systems. To this end, we investigated the metabolic responses of three fungal strains (Sarocladium sp., Penicillium sp., and Fusarium sp.) isolated from the coastal upwelling off central-south Chile. The growth and respiration rates of these marine fungi were comprehensively evaluated using a diverse array of substrates, including glucose, cellobiose, sucrose, glycogen, asparagine, alanine, and glycine. The highest respiration rates were consistently recorded with glycogen, with no significant differences observed among species. Glucose yielded higher respiration rates in Sarocladium sp., and sucrose stimulated greater respiration in Penicillium sp. Phenotype microarrays were used to evaluate mycelium growth on various organic and inorganic nitrogen, phosphorus, and sulfur substrates. All three species exhibited high utilization indices for all substrate types, with organic components promoting the greatest growth. l-Amino acids were the preferred nitrogen sources. Adenosine and guanosine were the primary sources of phosphorus, while cysteine and methionine were the main sources of sulfur necessary for growth. Based on these species' preferred substrates for growth and respiration, we offer new insights into the previously underexplored ecological roles of these fungi in the degradation of marine organic matter and biogeochemical cycling in upwelling ecosystems.","PeriodicalId":18825,"journal":{"name":"Mycobiology","volume":"54 1","pages":"1-14"},"PeriodicalIF":2.0,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12697269/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145757116","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}

引用次数: 0