Mycorrhiza最新文献

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One small step for mycorrhiza, one giant leap for ericoid mycorrhizal research. 菌根的一小步,类菌根研究的一大步。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-09-19 DOI: 10.1007/s00572-026-01314-y
Martin Vohník, Camille S Delavaux
{"title":"One small step for mycorrhiza, one giant leap for ericoid mycorrhizal research.","authors":"Martin Vohník, Camille S Delavaux","doi":"10.1007/s00572-026-01314-y","DOIUrl":"10.1007/s00572-026-01314-y","url":null,"abstract":"<p><p>The recently concluded 13th International Conference on Mycorrhiza (ICOM 2026; 12-17 July 2026, Cairns, Australia) was the first conference in the series to include a symposium dedicated exclusively to ericoid mycorrhiza (ErM; see Supplementary Material for the symposium programme), arguably the least understood of the four principal types of mycorrhizal symbiosis. The symposium, entitled \"Ericoid mycorrhizal fungi worldwide: Linking diversity, biogeography, ecology, and biochemistry to build a global research network\", was organized by the authors and brought together speakers from six countries. Related ErM research was also presented in the separate ICOM 2026 symposium \"Mycorrhiza and fire: Interactions, recovery, and resilience\". The ErM symposium followed the workshop \"The 'other' endomycorrhizas: ecology, diversity, molecular biology, and methods of study\", organized by Camille Delavaux and Alan Wanke at 12th ICOM (2024, Manchester, UK), which highlighted the need for greater attention to less-studied mycorrhizal systems. The 2026 symposium represented a timely milestone for ErM research by providing a dedicated international platform for discussing methodological challenges, recent advances, and future directions.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149008670","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
Plant-associated microbial communities vary across compartments, mycorrhizal types, and species identities in alpine meadows of the Qinghai-Tibetan Plateau. 青藏高原高寒草甸植物相关微生物群落在区室、菌根类型和物种特征上存在差异。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-09-17 DOI: 10.1007/s00572-026-01309-9
Tian Yu Pan, Yong Jie Liu, Hui Min Sun, Zhu L Yang, Bang Feng
{"title":"Plant-associated microbial communities vary across compartments, mycorrhizal types, and species identities in alpine meadows of the Qinghai-Tibetan Plateau.","authors":"Tian Yu Pan, Yong Jie Liu, Hui Min Sun, Zhu L Yang, Bang Feng","doi":"10.1007/s00572-026-01309-9","DOIUrl":"10.1007/s00572-026-01309-9","url":null,"abstract":"<p><p>Plant-microbe symbioses can enhance plant adaptability. However, whether root-associated microbes form specific associations with plants of different mycorrhizal types remains controversial. Furthermore, it is currently unknown whether plants with different mycorrhizal types show heterogeneity in their phyllosphere microbial communities. In this study, we independently conducted in two alpine meadows, simultaneously collecting root and phyllosphere samples from plants with different mycorrhizal types, and used amplicon sequencing to characterize patterns of microbial community variations. We observed a strong compartment differentiation, with roots dominated by symbiotrophic fungi, phyllospheres by saprotrophic fungi, and the two compartments harboring distinct groups of plant-beneficial bacteria. Within each compartment, mycorrhizal types and species identity of plants can influence both fungal and bacterial community compositions. Specifically, plants with different mycorrhizal types or even different plant species within the same mycorrhizal type (especially ectomycorrhizal) tend to harbor distinct mycorrhizal fungi and root endophytes, particularly dark septate endophytes, challenging the traditional views that ectomycorrhizal fungi in alpine regions and dark septate endophytes have limited host specificity. Furthermore, our study revealed that bacteria showed broader niche breadths and stronger cross-compartment sharing than fungi, but fungi exhibited higher connectivity and more frequently acted as keystone nodes in inter-kingdom co-occurrence networks. This study deepens our understanding of how mycorrhizal types of host plants relate to variations in the microbial communities of entire plants. Future research should further elucidate the molecular mechanisms underlying differential microbial associations and explore their ecological roles in alpine ecosystems.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148990491","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
Effects of ectomycorrhizal fungi on the physiological and ecological characteristics of Larix gmelinii under salt stress. 盐胁迫下外生菌根真菌对落叶松生理生态特性的影响。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-09-17 DOI: 10.1007/s00572-026-01313-z
Yuxuan Wang, Yan Zhang, Wei Yang, Fei Wang, Laiye Qu
{"title":"Effects of ectomycorrhizal fungi on the physiological and ecological characteristics of Larix gmelinii under salt stress.","authors":"Yuxuan Wang, Yan Zhang, Wei Yang, Fei Wang, Laiye Qu","doi":"10.1007/s00572-026-01313-z","DOIUrl":"10.1007/s00572-026-01313-z","url":null,"abstract":"<p><p>Soil salinization has become a major constraint on afforestation and forest regeneration in Northeast China, limiting the growth and development of Larix gmelinii. Enhancing the salt tolerance of L. gmelinii is therefore of considerable importance, and ectomycorrhizal fungi (ECMF) inoculation has been shown to improve plant stress resistance. However, the mechanisms by which ECMF enhance salt tolerance in L. gmelinii remain poorly understood. In this study, L. gmelinii seedlings inoculated with an ECMF consortium consisting of Boletus edulis and Chroogomphus rutilus were subjected to 120 mM NaCl stress. Photosynthetic characteristics, antioxidant enzyme activities, osmotic adjustment substances, ion contents, and metabolite profiles were analyzed to elucidate the physiological mechanisms underlying ECMF-mediated salt tolerance. The results showed that ECMF inoculation promoted the growth of L. gmelinii under salt stress. ECMF alleviated the decline in net photosynthetic rate caused by stomatal limitation and maintained photosynthetic performance. Under salt stress, L. gmelinii primarily scavenged reactive oxygen species through increased peroxidase activity, activation of ascorbate and aldarate metabolism, and enhanced flavonoid biosynthesis. Furthermore, ECMF inoculation enhanced galactose metabolism and amino acid biosynthesis, resulting in increased soluble sugar and soluble protein contents and improved osmotic adjustment capacity. In addition, ECMF improved ion homeostasis by promoting K⁺ translocation to shoots while restricting Na⁺ transport and enhancing Na⁺ retention in roots. These findings demonstrate that ECMF enhance salt tolerance in L. gmelinii through coordinated regulation of photosynthesis, antioxidant defense, osmotic adjustment, and ion homeostasis, providing a theoretical basis for the application of ECMF in saline-alkali land afforestation.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148990551","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
An interpretable soil-pH suitability index for arbuscular mycorrhizal fungal genera. 丛枝菌根真菌属可解释的土壤ph适宜性指标。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-09-11 DOI: 10.1007/s00572-026-01312-0
Dmytro Tsyhliuk
{"title":"An interpretable soil-pH suitability index for arbuscular mycorrhizal fungal genera.","authors":"Dmytro Tsyhliuk","doi":"10.1007/s00572-026-01312-0","DOIUrl":"10.1007/s00572-026-01312-0","url":null,"abstract":"<p><p>Soil pH is among the most consistent abiotic axes structuring arbuscular mycorrhizal (AM) fungal communities, yet the pH dependence of individual taxa has not been turned into an interpretable instrument that resolves preference at the genus level and maps globally. HESI (Hydrogenic Edaphic Suitability Index) is a fuzzy-set trapezoidal pH-membership function for twelve Glomeromycotina genera whose four parameters are read from binned presence-rate profiles in GlobalFungi by an explicit rule rather than fitted, then scored on an independent SoilGrids pH surface. Under spatial block cross-validation, which tests transfer to unsampled regions, the mean binned Boyce index was + 0.19; in-sample across the whole GlobalFungi pool, it was positive for eleven of twelve genera (mean + 0.52), eight with bootstrap intervals above zero and five distinguishable from a label-permutation null. The flexible pH spline matched or exceeded machine-learning models, most clearly at the species level, where the learners fell below zero while the unfitted function remained positive. The genus with a negative index and the one with no discriminating window mark the diagnostic limits of a single-axis model. Species-level pH optima estimated independently in GlobalAMFungi agreed in rank with those from GlobalFungi (ρ = +0.46, p = 0.030), and family-level optima with small-subunit virtual-taxon optima (ρ = +0.79 across eight families), so the niches track an independent marker; whether the scored surface transfers is unresolved at these sample sizes. Soil pH sorted which genera occur, a signal distinct from the temperature-dominated richness of published global maps. The per-genus surfaces are offered as spatially explicit, testable hypotheses.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148945162","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
Integrating stable isotope and fungal association evidence for nutrient acquisition in the rare orchid, Risleya atropurpurea. 整合稀有兰花营养获取的稳定同位素和真菌关联证据。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-09-09 DOI: 10.1007/s00572-026-01311-1
Hong Jiang, Wen Yu Liao, Liping Qin, Yung-I Lee, Gerhard Gebauer
{"title":"Integrating stable isotope and fungal association evidence for nutrient acquisition in the rare orchid, Risleya atropurpurea.","authors":"Hong Jiang, Wen Yu Liao, Liping Qin, Yung-I Lee, Gerhard Gebauer","doi":"10.1007/s00572-026-01311-1","DOIUrl":"10.1007/s00572-026-01311-1","url":null,"abstract":"<p><p>Risleya atropurpurea, a fully mycoheterotrophic species in the subtribe Calypsoinae, is a rare Himalayan orchid whose fungal associations and nutritional strategy remain poorly understood. In this study, we combined high-throughput ITS amplicon sequencing and stable isotope natural abundance analyses to investigate the mycorrhizal associations and nutrient acquisition strategy of R. atropurpurea in a natural habitat in southwestern China. Fungal community profiling revealed the dominance of a single operational taxonomic unit affiliated with Basidiodendron caesiocinereum (Auriculariales). Stable isotope analyses showed that R. atropurpurea was significantly enriched in both ¹³C and ¹⁵N relative to neighboring autotrophic reference plants, consistent with isotope patterns characteristic of fully mycoheterotrophic orchids associated with saprotrophic wood-decaying fungi. Together, these findings indicate that Basidiodendron is likely to contribute to carbon and nitrogen acquisition in R. atropurpurea and suggest that Auriculariales-associated saprotrophic fungi may represent an under-recognized nutritional partner in fully mycoheterotrophic orchids. Our study expands the known diversity of fungal partners involved in orchid mycoheterotrophy and provides new insights into the ecological evolution of fungal-dependent nutrition in orchids.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148920462","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
Fatty acid signatures distinguish autotrophy, partial mycoheterotrophy, and full mycoheterotrophy in angiosperms. 脂肪酸特征区分被子植物的自养、部分分枝异养和完全分枝异养。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-08-29 DOI: 10.1007/s00572-026-01303-1
Kenji Suetsugu, Takahiro Kimoto, Ayano Medo
{"title":"Fatty acid signatures distinguish autotrophy, partial mycoheterotrophy, and full mycoheterotrophy in angiosperms.","authors":"Kenji Suetsugu, Takahiro Kimoto, Ayano Medo","doi":"10.1007/s00572-026-01303-1","DOIUrl":"10.1007/s00572-026-01303-1","url":null,"abstract":"<p><p>Detecting partial mycoheterotrophy in green plants remains challenging, particularly in associations with arbuscular mycorrhizal (AM) or rhizoctonia fungi, because natural-abundance stable isotope patterns often provide limited diagnostic resolution in these systems. We tested whether fatty acid composition, widely used to infer trophic relationships in animal and soil ecology, provides complementary evidence of fungal carbon acquisition by plants. We characterized fatty acid profiles of 21 autotrophic reference plants, six partially mycoheterotrophic plants, and 17 fully mycoheterotrophic plants associated with AM, ectomycorrhizal, or saprotrophic fungi. In expanded analyses, we additionally examined three individuals each of the rhizoctonia-associated orchid Goodyera biflora and the presumed autotrophic AM plant Trillium camschatcense with marked <sup>13</sup>C enrichment, together with six co-occurring autotrophic reference plants. Fatty acid composition differed significantly among the three nutritional groups. Increasing mycoheterotrophic dependence was associated with decreasing relative abundance of 18:3n-3 and increasing relative abundance of 18:2n-6, which is widely used as a fungal biomarker in soil ecology. Partially mycoheterotrophic plants occupied an intermediate position in ordination space, and all pairwise group comparisons were significant. Differentiation remained significant after exclusion of 18:3n-3 and 16:3n-3 and renormalization of the remaining components, indicating that chloroplast-associated fatty acids alone did not drive the pattern. Goodyera biflora resembled partially mycoheterotrophic orchids, whereas T. camschatcense resembled autotrophic references. Fatty acid profiling may therefore complement stable isotope analysis in assessments of partial mycoheterotrophy. The profiles likely reflect metabolic remodeling, incorporation of fungal-derived carbon into newly synthesized plant lipids, or both, although some retention of intact fungal lipids cannot be excluded.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13525038/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148850951","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
Influence of plant cover on the long-term dynamics of an arbuscular mycorrhizal fungal SynCom in a semi-arid Mediterranean environment. 半干旱地中海环境下植物覆盖对丛枝菌根真菌SynCom长期动态的影响
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-08-28 DOI: 10.1007/s00572-026-01304-0
Pablo Cornejo, Nuria Ferrol, José Miguel Barea, Marcela Franco-Correa, Cecilia García, Ricardo Cabeza, Concepción Azcón-Aguilar
{"title":"Influence of plant cover on the long-term dynamics of an arbuscular mycorrhizal fungal SynCom in a semi-arid Mediterranean environment.","authors":"Pablo Cornejo, Nuria Ferrol, José Miguel Barea, Marcela Franco-Correa, Cecilia García, Ricardo Cabeza, Concepción Azcón-Aguilar","doi":"10.1007/s00572-026-01304-0","DOIUrl":"10.1007/s00572-026-01304-0","url":null,"abstract":"<p><p>The influence of the plant cover on the composition of an arbuscular mycorrhizal (AM) fungal synthetic community (SynCom) was studied in a time-course experiment. A mesocosm system was designed to mimic the environmental conditions of a semi-arid Mediterranean ecosystem, allowing the assessment of changes in AM fungal establishment, persistence, and sporulation within the SynCom. The mesocosm system included soil, AM fungi and plant species characteristic of the target region from Southern Spain. Retama sphaerocarpa, Lavandula latifolia, Thymus mastichina and Rosmarinus officinalis were selected and cultivated either in monoculture or in pairwise combinations, covering all possible dual associations. The initial AM SynCom was composed of six species (Rhizophagus clarus, Septoglomus constrictum, Funneliformis coronatum, R. intraradices, F. mosseae and S. viscosum), all isolated from southern Spain. Changes in the AM SynCom, both colonizing plant roots and the spores in the rhizosphere, were monitored every three months over three years. Fungi colonizing roots were identified through nested PCR-TTGE of the SSU rDNA, while AM fungal spores were quantified based on morphotype. Results indicate that plant species composition exerted only a limited influence on the AM fungal community structure, whereas pronounced species-specific differences in establishment, persistence, and sporulation shaped community trajectories over time. Septoglomus constrictum showed increasing spore abundance and specific density across all plant cover types, while other species (R. clarus, F. coronatum) became undetectable in the spore pool or maintained a low spore density (F. mosseae, S. viscosum). Qualitative root-detection patterns were generally consistent with rhizospheric sporulation trends, although the pooled PCR-TTGE approach did not allow quantitative comparison between intraradical occurrence and spore abundance. Overall, these results suggest that S. constrictum showed the most consistent persistence and sporulation under semi-arid Mediterranean conditions, identifying it as a candidate for further validation in AM fungal consortia intended for semi-arid Mediterranean environments, particularly for further testing in restoration-oriented applications under increasing aridity.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148840787","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
A space-for-time assessment of drought vulnerability for ectomycorrhizal fungi of seasonally dry, old-growth Pseudotsuga menziesii ecosystems. 季节性干旱、老生孟氏假杉木生态系统外生菌根真菌干旱易损性时空评价
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-08-26 DOI: 10.1007/s00572-026-01307-x
John Marty Kranabetter, Timothy James Philpott
{"title":"A space-for-time assessment of drought vulnerability for ectomycorrhizal fungi of seasonally dry, old-growth Pseudotsuga menziesii ecosystems.","authors":"John Marty Kranabetter, Timothy James Philpott","doi":"10.1007/s00572-026-01307-x","DOIUrl":"10.1007/s00572-026-01307-x","url":null,"abstract":"<p><p>Douglas-fir (Pseudotsuga menziesii) forests of British Columbia are typically exposed to summer droughts, which are likely to increase in magnitude with climate warming. We examined the ectomycorrhizal fungi (EMF) of seasonally dry coastal and interior P. menziesii old-growth stands on contrasting (mesic vs. dry) soils to better understand their vulnerability to a reduction in soil water-holding capacity (as a proxy for rising climatic moisture deficits [CMD]). Coastal stands (CMD = 330) had considerably higher EMF species richness than interior stands (95 vs. 53 spp., on average), which was mirrored by a similar disparity in sporocarp fruiting. Interior forests (CMD = 402) were further differentiated from coastal stands by a greater proportion of ascomycete species and long-distance rather than contact mantle exploration types. We also found that pioneer fungi (Wilcoxina, Rhizopogon and Suillus) dominated interior stands (68% of read depth, on average), an unusual attribute for old-growth forests. Only the coastal stands demonstrated a clear decline in EMF species richness on dry vs. mesic soils, along with a weakly significant disparity in community composition. Increasing CMD as projected for the coast could result in species loss, based on this space-for-time substitution, although the sizeable EMF community of dry soils ([Formula: see text] 80 spp. per plot) may provide adequate functional resilience under climate change, at least in the near term. The smaller, more stable cohort of EMF species (dominated by pioneer fungi) found in the interior may represent the ultimate trajectory of EMF communities with P. menziesii under continuous warming.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148830648","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
Biodegradable mulching and nitrogen fertilization differentially affect AM fungal community structure and functioning in a semi-arid maize agroecosystem. 可降解地膜和氮肥对半干旱玉米农业生态系统AM真菌群落结构和功能的影响存在差异。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-08-25 DOI: 10.1007/s00572-026-01306-y
Lin Mao, Yae Luo, Jingru Yan, Huan Jin, Dachuan Liu, Jiayao Han, Yali Zhang, Zhou Fang, He Mao
{"title":"Biodegradable mulching and nitrogen fertilization differentially affect AM fungal community structure and functioning in a semi-arid maize agroecosystem.","authors":"Lin Mao, Yae Luo, Jingru Yan, Huan Jin, Dachuan Liu, Jiayao Han, Yali Zhang, Zhou Fang, He Mao","doi":"10.1007/s00572-026-01306-y","DOIUrl":"10.1007/s00572-026-01306-y","url":null,"abstract":"<p><p>Arbuscular mycorrhizal (AM) fungi are central to plant nutrient acquisition and soil functioning, yet how biodegradable mulching and nitrogen (N) fertilization jointly regulate AM fungal communities and maize productivity remains poorly understood. We conducted a factorial field experiment combining biodegradable mulching with five N fertilization rates ranging from 0 to 300 kg N ha⁻¹. Soil properties, plant nutrient status, AM fungal richness and community composition, root length colonization (RLC), and maize yield were assessed across the jointing, silking, and filling stages. N fertilization markedly increased RLC but reduced AM fungal richness, revealing a decoupling between taxonomic diversity and root colonization. Neither mulching nor N fertilization had a significant main effect on AM fungal community composition across the three growth stages, although their interaction was significant at the jointing stage. Beta-diversity partitioning further showed that community dissimilarity was dominated by taxon turnover rather than nestedness. Environmental associations with community composition were growth-stage dependent and strongest at the jointing stage. Partial least squares structural equation modeling further showed that fertilization promoted maize yield through enhanced root colonization and plant N acquisition, whereas mulching affected N uptake through contrasting effects on soil hydrothermal conditions and soil fertility. Collectively, these findings suggest that integrating optimized N fertilization with biodegradable mulching can improve maize productivity while supporting mycorrhizal functioning in water-limited agroecosystems.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148818877","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 fungi reshape rhizosphere microbial communities to alleviate phosphorus deficiency in soda-saline soils. 丛枝菌根真菌重塑根际微生物群落,以缓解钠盐土壤的缺磷。
IF 4 2区 生物学
Mycorrhiza Pub Date : 2026-08-25 DOI: 10.1007/s00572-026-01305-z
Junzhe Li, Yan Zhang, Kaihui Yang, Yuemi Yang, Ziyu Chang, Tianle Xu, Fuqiang Song, Wei Chang
{"title":"Arbuscular mycorrhizal fungi reshape rhizosphere microbial communities to alleviate phosphorus deficiency in soda-saline soils.","authors":"Junzhe Li, Yan Zhang, Kaihui Yang, Yuemi Yang, Ziyu Chang, Tianle Xu, Fuqiang Song, Wei Chang","doi":"10.1007/s00572-026-01305-z","DOIUrl":"10.1007/s00572-026-01305-z","url":null,"abstract":"<p><p>Phosphorus availability is severely constrained in soda saline-alkali soils; yet the mechanisms by which arbuscular mycorrhizal (AM) fungi modulate rhizosphere microbial communities to alleviate the limitation are still unresolved. In the research, a microcosm experiment is conducted with metagenomic sequencing to investigate how inoculation with Rhizophagus intraradices influenced rhizosphere properties, phosphorus fractions, phosphatase activities, microbial community structure, P-cycling gene networks, and growth of Elaeagnus angustifolia under soda saline-alkali stress. The results demonstrated that AM inoculation was associated with enhanced plant growth and root development, ameliorated rhizosphere physicochemical conditions, elevated phosphatase activities, and enrichment of organic phosphorus-mineralizing bacteria, primarily Actinobacteria (Streptomyces) and Proteobacteria (Pseudoxanthomonas, Sphingomonas, Variovorax). Critically, the P-cycling gene network was reorganized, with hubs shifting from inorganic phosphorus transport genes toward organic phosphorus mineralization genes. Variance partitioning analysis further indicated that AM fungi independently contributed to variation in P-cycling functional genes, whereas their influence on soil phosphorus pools and phosphatase activity appeared to be largely indirect and associated with changes in soil chemical properties. Collectively, these findings support the hypothesis that AM fungi may promote phosphorus mobilization and transfer toward plants by restructuring microbial community composition and functional potential, providing a foundation for microbial management strategies in soda saline-alkali soils.</p>","PeriodicalId":18965,"journal":{"name":"Mycorrhiza","volume":"36 5","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148818879","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
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