Mycorrhiza最新文献

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Root-associated and soil-dwelling fungi in alpine meadows show differential shifts in community assembly mechanisms and interspecific interactions along an elevation gradient. 高寒草甸根生真菌和土生真菌在群落组装机制和种间相互作用方面表现出不同的海拔梯度变化。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-07-04 DOI: 10.1007/s00572-026-01293-0
Sai Gong, Xin Xu, Liu Kun Jia, Zai-Wei Ge, Zhu Liang Yang, Bang Feng
{"title":"Root-associated and soil-dwelling fungi in alpine meadows show differential shifts in community assembly mechanisms and interspecific interactions along an elevation gradient.","authors":"Sai Gong, Xin Xu, Liu Kun Jia, Zai-Wei Ge, Zhu Liang Yang, Bang Feng","doi":"10.1007/s00572-026-01293-0","DOIUrl":"10.1007/s00572-026-01293-0","url":null,"abstract":"<p><p>Soil fungi, as key players in maintaining ecological functioning and stability, have been widely studied in alpine ecosystems. However, prior studies focused mainly on their spatial patterns and temporal dynamics, as well as their driving factors. In-depth research on community assembly mechanisms, particularly how biotic interactions influence this, is lacking. In this study, we collected root samples of an ectomycorrhizal plant, Bistorta macrophylla, and bulk soil around them, along a 4300-4750 m gradient in alpine meadows of Baima Snow Mountain, northwestern Yunnan, China, and obtained ITS2 sequences using high-throughput sequencing, which were subjected to bioinformatic processing and statistical analyses, including differential abundance analyses, inference of community assembly mechanisms and interpretation of co-occurrence networks. Our results reveal that fungal community assembly in soil is influenced more by stochastic processes with the increase of elevation, but homogeneous selection consistently acts as the predominant process in shaping root-associated communities. This helps keep a stable core mycobiota dominated by Cenococcum and Phialocephala, both being melanized fungi, in the root systems of B. macrophylla. Nevertheless, members of the order Helotiales and certain EcM genera consistently act as key nodes in fungal co-occurring networks in both soil and root samples. Further, we find that the elevational change trend of positive correlations between ectomycorrhizal and saprotrophic fungi matches with the theoretical expectation by the stress gradient hypothesis. Our results emphasize the pivotal role of compartment filtering by plant roots in selecting symbiotic partners and shaping fungal correlation networks, and highlight that the stress gradient hypothesis could be applicable in harsh alpine environments.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148387793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contrasting biotic and abiotic drivers of Glomeromycotina and Mucoromycotina mycorrhizal associations in field-grown durum wheat. 田间硬粒小麦中小球菌门和毛霉菌门菌根关联的生物和非生物驱动因素对比。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-07-04 DOI: 10.1007/s00572-026-01281-4
Elisa Taschen, Esther Guillot, Claude Plassard, Erwan Kerbiriou, Damien Dezette, Adrien Taudière, Aline Personne, Agnès Robin, Dirk Redecker, Philippe Hinsinger
{"title":"Contrasting biotic and abiotic drivers of Glomeromycotina and Mucoromycotina mycorrhizal associations in field-grown durum wheat.","authors":"Elisa Taschen, Esther Guillot, Claude Plassard, Erwan Kerbiriou, Damien Dezette, Adrien Taudière, Aline Personne, Agnès Robin, Dirk Redecker, Philippe Hinsinger","doi":"10.1007/s00572-026-01281-4","DOIUrl":"10.1007/s00572-026-01281-4","url":null,"abstract":"<p><p>Mucoromycotina fine root endophytes (M-FRE), although commonly present in cultivated crops, represent a largely overlooked symbiosis, and their diversity and ecological functions under field conditions remain poorly understood. The co-occurrence of M-FRE and Glomeromycotina arbuscular mycorrhizal fungi (G-AMF) was assessed in field-grown durum wheat (Triticum turgidum subsp. durum), testing the effects of combined water and nitrogen stress on root colonization and fungal community diversity in roots, rhizosphere, and extra-radical hyphae. The M-FRE colonization was reduced under combined stress but was unaffected by wheat genotype. In contrast, G-AMF colonization varied among genotypes and was insensitive to this combined stress. While G-AMF colonization correlated with root traits, M-FRE abundance was rather determined by soil properties and the applied stress. Colonization by M-FRE but not by G-AMF correlated with nitrogen and phosphorus uptake in plant shoots. Partial 18 S metabarcoding detected 74 G-AMF taxa and 12 M-FRE taxa, some shared across compartments, revealing active growth of M-FRE extra-radical hyphae. Stress had contrasting effects on diversity: G-AMF alpha diversity remained stable, whereas M-FRE diversity declined, with stress driving distinct community structures for both groups. Collectively, our results suggest that M-FRE and G-AMF are structured by distinct ecological drivers, supporting functional differentiation between these morphologically similar symbioses.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148387782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Divergent mycorrhizal strategies and nutritional modes in the East Asian orchid genus Ephippianthus. 东亚兰属的菌根分化策略和营养模式。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-07-02 DOI: 10.1007/s00572-026-01285-0
Kenji Suetsugu, Hidehito Okada
{"title":"Divergent mycorrhizal strategies and nutritional modes in the East Asian orchid genus Ephippianthus.","authors":"Kenji Suetsugu, Hidehito Okada","doi":"10.1007/s00572-026-01285-0","DOIUrl":"10.1007/s00572-026-01285-0","url":null,"abstract":"<p><p>Orchids provide an ideal system for examining the evolution of heterotrophy because all species depend on fungal carbon during germination, whereas adult nutritional modes range from autotrophy to full mycoheterotrophy. The subtribe Calypsoinae illustrates this diversity through repeated shifts in fungal partners and nutritional strategies. Recent phylogenomic analyses place the Dactylostalix-Ephippianthus clade as sister to the Corallorhiza clade, which includes several heterotrophic lineages, raising questions about adult nutrition in Ephippianthus. Here, we combined fungal metabarcoding with δ¹³C and δ¹⁵N analyses to investigate the physiological ecology of the two known Ephippianthus species, which are restricted to Japan and the adjacent Russian Far East. We found that Ephippianthus schmidtii was primarily associated with Tulasnellaceae (Cantharellales). Its δ¹³C and δ¹⁵N values showed no significant positive enrichment relative to co-occurring autotrophic plants, providing no evidence for substantial fungal nutrient gain based on these isotope markers. By contrast, Ephippianthus sawadanus was mainly associated with saprotrophic Cyphellaceae (Agaricales), representing, to our knowledge, the first documented case in which a member of this family was detected as the dominant mycorrhizal associate of a green orchid. Moreover, E. sawadanus exhibited elevated δ¹³C and δ¹⁵N values relative to autotrophic plants, consistent with substantial fungal contributions to its carbon and nitrogen budgets. Together, these findings reveal divergent mycorrhizal strategies and nutritional modes in the East Asian orchid genus Ephippianthus.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13323335/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148369302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
From manual scoring to machine learning: recent developments in image-based arbuscular mycorrhizal fungi root quantification. 从人工评分到机器学习:基于图像的丛枝菌根真菌根量化的最新进展。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-07-02 DOI: 10.1007/s00572-026-01283-2
Annabelle Bouvette, Sulaimon Basiru, Mohamed Hijri
{"title":"From manual scoring to machine learning: recent developments in image-based arbuscular mycorrhizal fungi root quantification.","authors":"Annabelle Bouvette, Sulaimon Basiru, Mohamed Hijri","doi":"10.1007/s00572-026-01283-2","DOIUrl":"10.1007/s00572-026-01283-2","url":null,"abstract":"<p><p>Selecting an appropriate method to quantify arbuscular mycorrhizal fungi (AMF) colonization in plants can be challenging, particularly for non-experts, due to the wide diversity of available techniques, some of which date back to the 1980s. Despite rapid methodological advances, comprehensive reviews focusing specifically on recent image analysis approaches for AMF root quantification are still scarce in the scientific literature. Given the growing potential of image-based methods to improve the accuracy, reproducibility, and high throughput of AMF root colonization assessment, this review synthesizes conceptual structure and thematic map of studies focusing on AMF colonization from 2001 to 2026. In addition, we examine widely used traditional approaches, such as the gridline intersect method, and emerging tools, including Visual Basic for Application-Arbuscular Mycorrhizal Fungi (VBA-AMF), MycoPatt, WinRHIZO, ImageJ-based workflows, Zeiss Intellesis, and deep learning approaches such as Automatic Mycorrhizal Finder (AMFinder), \"Tool for Analysing root images to calculate the Infection rate of arbuscular Mycorrhizal fungi\" (TAIM) and Mask Region-based Convolutional Neural Network (Mask R-CNN). By critically comparing their principles, capabilities, and limitations, this review aims to guide researchers in selecting the most appropriate image analysis methods for AMF quantification according to their experimental objectives and technical constraints.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148369346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stable isotope signatures and specific mycobionts reveal the mycoheterotrophic nutrient acquisition of Danxiaorchis yangii. 稳定同位素特征和特异性菌群揭示了丹晓菇的异养营养获取。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-07-01 DOI: 10.1007/s00572-026-01288-x
Zhoudong Han, Franziska E Zahn, Hong Jiang, Yung-I Lee, Gerhard Gebauer
{"title":"Stable isotope signatures and specific mycobionts reveal the mycoheterotrophic nutrient acquisition of Danxiaorchis yangii.","authors":"Zhoudong Han, Franziska E Zahn, Hong Jiang, Yung-I Lee, Gerhard Gebauer","doi":"10.1007/s00572-026-01288-x","DOIUrl":"10.1007/s00572-026-01288-x","url":null,"abstract":"<p><p>Fully mycoheterotrophic orchids rely entirely on fungal symbionts for carbon acquisition, are often highly specialized in their fungal associations, and exhibit stable isotope signatures distinct from autotrophic plants. Danxiaorchis yangii is a rare, leafless orchid endemic to subtropical China whose nutritional ecology has not been previously examined. We combined high-throughput fungal community profiling with multi-element stable isotope natural abundance analyses (δ¹³C, δ¹⁵N, δ²H, δ¹⁸O) to investigate fungal associations and nutrient acquisition in D. yangii. Mycorrhizal rhizomes were dominated by a single operational taxonomic unit affiliated with the wood-decaying saprotroph Candolleomyces candolleanus (Psathyrellaceae), with additional low-abundance taxa related to Ramariopsis (Clavariaceae). Stable isotope signatures showed strong enrichment in ¹³C, ¹⁵N, and ²H relative to co-occurring autotrophic plants, confirming a fully mycoheterotrophic nutritional mode. Notably, the magnitude of nitrogen isotope enrichment differed from that reported for other Psathyrellaceae-associated orchids, suggesting greater complexity in nitrogen acquisition within saprotroph-based mycoheterotrophic systems.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148361676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Short-term legacy effects of white mustard cover cropping and tillage on arbuscular mycorrhizal fungal colonization, community composition, and abundance in volunteer barley. 白芥菜覆盖和耕作对大麦丛枝菌根真菌定植、群落组成和丰度的短期遗留影响。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-06-30 DOI: 10.1007/s00572-026-01289-w
Arman Shamshitov, Gražina Kadžienė, Alessandra Trinchera, Skaidrė Supronienė
{"title":"Short-term legacy effects of white mustard cover cropping and tillage on arbuscular mycorrhizal fungal colonization, community composition, and abundance in volunteer barley.","authors":"Arman Shamshitov, Gražina Kadžienė, Alessandra Trinchera, Skaidrė Supronienė","doi":"10.1007/s00572-026-01289-w","DOIUrl":"10.1007/s00572-026-01289-w","url":null,"abstract":"<p><p>Brassicaceae cover crops are widely adopted in agroecosystems, yet their legacy effects on arbuscular mycorrhizal fungi (AMF) remain context-dependent and mechanistically unresolved. In this study, we assessed how a standing white mustard (Sinapis alba L.) cover crop interacts with tillage intensity to influence AMF colonization, community composition, diversity, and abundance in volunteer barley (Hordeum vulgare L.) roots. AMF responses were quantified using complementary approaches, including microscopic assessment of root colonization, 18S rRNA gene amplicon sequencing, and taxon-specific real-time PCR (qPCR). Roots were sampled before white mustard termination, thereby avoiding tissue disruption and isothiocyanate release, to distinguish host-mediated filtering from biofumigation-associated chemical disturbance. Colonization intensity was primarily determined by tillage, with significantly higher colonization under no-tillage compared to conventional tillage. Community-level responses, however, were dependent on taxonomic resolution. At the amplicon sequence variant (ASV) level, white mustard reduced AMF richness, whereas diversity and evenness were unaffected. At the genus level, richness remained stable, but diversity and evenness declined under the combined effects of cover cropping and conventional tillage, indicating that tillage modulated the impact of cover crop legacy. Dominant Glomeraceae lineages remained stable across treatments, and total AMF abundance showed no consistent response to management, although Rhizophagus irregularis was more abundant under no-tillage. Colonization intensity correlated with ASV richness rather than with individual taxa, suggesting that early symbiotic dynamics were linked to community diversity rather than to the dominance of specific lineages. These findings suggest that white mustard cover cropping, despite its well‑recognized agronomic benefits, may also carry context‑dependent shifts in AMF communities, highlighting a potential ecological trade‑off that should be considered when designing cover crop-tillage management combinations.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148352621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Arbuscular mycorrhizal plasticity in cereals reflects quantitative rather than taxonomically selective regulation. 谷物丛枝菌根可塑性反映的是数量调控而非分类选择调控。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-06-30 DOI: 10.1007/s00572-026-01292-1
Kaisa A Torppa, John Davison, Merlin Haljak, Inga Hiiesalu, Klaara Käämer, Karin Kaljund, Elina Karron, Mart Laugis, Anne-Liia Maido, Priit Penu, Triin Saue, Raivo Sell, Karli Sepp, Ilmar Tamm, Kalvi Tamm, Ülle Tamm, Kristo Tikk, Merili Toom, Tanel Vahter, Martti Vasar, A Y Ayesh Piyara Wipulasena, Martin Zobel
{"title":"Arbuscular mycorrhizal plasticity in cereals reflects quantitative rather than taxonomically selective regulation.","authors":"Kaisa A Torppa, John Davison, Merlin Haljak, Inga Hiiesalu, Klaara Käämer, Karin Kaljund, Elina Karron, Mart Laugis, Anne-Liia Maido, Priit Penu, Triin Saue, Raivo Sell, Karli Sepp, Ilmar Tamm, Kalvi Tamm, Ülle Tamm, Kristo Tikk, Merili Toom, Tanel Vahter, Martti Vasar, A Y Ayesh Piyara Wipulasena, Martin Zobel","doi":"10.1007/s00572-026-01292-1","DOIUrl":"10.1007/s00572-026-01292-1","url":null,"abstract":"<p><p>Grasses, including major cereal crops, associate with arbuscular mycorrhizal (AM) fungi to varying degrees depending on environmental conditions. Understanding mechanisms driving this environment-induced variation in mycorrhization, i.e. plant AM plasticity, is necessary to predict grass-mycorrhizal responses to global change factors, such as nutrient enrichment, and to resolve the role of AM symbiosis in cereal crop production. We compared AM plasticity in four cereal crops by testing the effect of nitrogen (N) fertilization on AM colonization and root PLFA 16:1ω5 concentration. To assess whether mycorrhization patterns reflect root functional traits, we compared specific root length among species. To determine whether plants regulate AM colonization qualitatively (by selectively associating with certain AM taxa) or quantitatively (by collectively suppressing colonization across taxa), we investigated directional shifts and variability in AM community structure in response to N fertilization. AM colonization varied between cereal species and was reduced by N fertilization, but we found limited evidence for interspecific differences in AM plasticity. Winter wheat appeared less AM responsive and associated more with uncultured AM fungi compared to the three spring-sown cereal species, oat, spring wheat and spring barley. Fertilization did not affect AM community composition, and within-species variation in AM community β-dispersion did not covary with variation in AM colonization or PLFA 16:1ω5 concentration. These results support the view that host plants regulate arbuscular mycorrhization quantitatively rather than through taxonomic selectivity. We propose AM plasticity as a plant-mycorrhizal trait to be used for more accurate predictions of plant environmental responses in eco-physiological and agroecological research.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148352596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fungal highways to water: Mechanisms of drought tolerance in arbuscular and ectomycorrhizal symbioses. 真菌通往水的途径:丛枝菌根和外生菌根共生体的耐旱机制。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-06-27 DOI: 10.1007/s00572-026-01284-1
Paola Musella, Stéphane Declerck, Quentin Ponette, Ismahen Lalaymia
{"title":"Fungal highways to water: Mechanisms of drought tolerance in arbuscular and ectomycorrhizal symbioses.","authors":"Paola Musella, Stéphane Declerck, Quentin Ponette, Ismahen Lalaymia","doi":"10.1007/s00572-026-01284-1","DOIUrl":"10.1007/s00572-026-01284-1","url":null,"abstract":"<p><p>Drought is an increasingly important constraint on plant productivity, affecting agricultural yields, forest dynamics, and ecosystem functioning worldwide. Mycorrhizal symbioses formed by arbuscular (AM) and ectomycorrhizal (EcM) fungi are key regulators of plant responses to water limitation, influencing water acquisition, transport, and maintenance of plant water status at the soil-plant interface. This review synthesizes current knowledge of the mechanistic pathways through which mycorrhizal associations enhance plant drought tolerance. We distinguish between direct hydraulic contributions, including expanded soil exploration via extraradical hyphal networks, hyphal water uptake, redistribution, and modifications of rhizosphere hydraulic properties, and indirect physiological and biochemical effects, such as changes in root system architecture, regulation of aquaporins, osmotic adjustment, antioxidant capacity, and phytohormonal signaling. Particular emphasis is placed on structural and functional differences between AM and EcM symbioses. We examine how contrasting intraradical interfaces (i.e., arbuscules versus Hartig net) and extraradical networks influence water movement, plant hydraulic conductance, and whole-plant performance under drought. We assess the implications of these processes for agriculture and forestry, highlighting context-dependent fungal-plant compatibility, maintenance of diverse mycorrhizal communities, and management practices that preserve soil structure and mycorrhizal networks. Despite substantial evidence that mycorrhizal fungi improve plant performance under water deficit, their quantitative contributions to plant water transport and growth remain insufficiently resolved, particularly in EcM-dominated systems. Addressing these knowledge gaps will require integrative, multi-scale approaches linking molecular regulation, root and hyphal hydraulics, and ecosystem-level water fluxes. Such advances are critical for predicting vegetation responses to intensifying drought conditions under global change.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148339333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isotopic and molecular evidence for contrasting fungal associations in two Epipogium orchids in cool-temperate Japan. 日本寒温带两种附属兰真菌组合的同位素和分子证据。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-06-26 DOI: 10.1007/s00572-026-01280-5
Kenji Suetsugu, Jun Matsubayashi, Hidehito Okada
{"title":"Isotopic and molecular evidence for contrasting fungal associations in two Epipogium orchids in cool-temperate Japan.","authors":"Kenji Suetsugu, Jun Matsubayashi, Hidehito Okada","doi":"10.1007/s00572-026-01280-5","DOIUrl":"10.1007/s00572-026-01280-5","url":null,"abstract":"<p><p>Fully mycoheterotrophic orchids depend on fungus-derived carbon. Associations with wood- and litter-decaying saprotrophic (SAP) fungi have been reported mainly in fully mycoheterotrophic orchids from warm, humid forests, whereas ectomycorrhizal (ECM) fungi commonly support fully mycoheterotrophic orchids in boreal and temperate forests. For example, the subtropical and tropical Epipogium roseum associates with wood-decaying Psathyrellaceae fungi, whereas the cool-temperate E. aphyllum associates with ECM fungi, including Inocybe. Field observations suggest possible SAP associations in E. japonicum in cool-temperate to subalpine forests in Japan, based on its frequent occurrence near decaying logs and coarse woody debris. Here, we characterized the fungal associates and carbon sources of E. japonicum from moist ravines and compared them with those of nearby E. aphyllum from ECM-dominated coniferous forests. We combined high-throughput ITS2 metabarcoding with δ<sup>13</sup>C and δ<sup>15</sup>N measurements from plants collected on Mount Kitadake. Sequencing showed that mycorrhizal rhizome tissues of E. japonicum were dominated by Psathyrellaceae, particularly Coprinopsis, whereas those of E. aphyllum were dominated by Inocybe. Epipogium japonicum showed stronger <sup>13</sup>C enrichment relative to co-occurring autotrophic plants than did E. aphyllum, consistent with carbon acquisition through deadwood-associated SAP fungi. These results indicate that two fully mycoheterotrophic congeners exploit contrasting fungal guilds within the same cool-temperate mountain landscape.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 4","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148331201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interactions between the arbuscular mycorrhizal fungus Acaulospora delicata, wheat, and aphids under drought stress. 干旱胁迫下丛枝菌根真菌、小麦和蚜虫的相互作用。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-06-24 DOI: 10.1007/s00572-026-01290-3
Abdul Ghaffar Khoso, Muhammad Awais
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