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Promotion of biomass, photosynthesis, and root growth of seedling biomass, photosynthesis, and root growth of Populus davidiana × P. bolleana by two species of ectomycorrhizal fungi
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作者 Tianze Zhang Fanjun Meng Dachuan Yin 《Journal of Forestry Research》 SCIE EI CAS CSCD 2024年第6期306-316,共11页
The addition of ectomycorrhizal fungi(ECMF),beneficial rhizosphere microorganisms,to the soil can pro-mote plant growth and resistance.Here,Populus davidi-ana×Populus bolleana tissue culture seedlings were grown ... The addition of ectomycorrhizal fungi(ECMF),beneficial rhizosphere microorganisms,to the soil can pro-mote plant growth and resistance.Here,Populus davidi-ana×Populus bolleana tissue culture seedlings were grown for 3 months in soils inoculated with one of the species,then seedlings were assessed for mycorrhizal colonization rate and growth,physiological and root traits.Suillus luteus and Populus involutus each formed ectomycorrhizal associa-tions with the seedlings.Seedling height,ground diameter,biomass,and leaf area were significantly greater after treat-ment with ECMF than in the non-inoculated controls.Treat-ment improved all physiological and root variables assessed(chlorophylls and carotenoids,cellulose,and soluble sugars and proteins;root length,surface area,projected area,mean diameter,volume,number of root tips).Seedlings inocu-lated with S.luteus outperformed those inoculated with P.involutus. 展开更多
关键词 ectomycorrhizal association Suillus luteus Paxillus involutus Populus davidiana×P.bolleana Growth promotion Root system scan
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Optimum conditions for pure culture of major ectomycorrhizal fungi obtained from Pinus sylvestris var. mongolica plantations in southeastern Keerqin sandy lands, China 被引量:1
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作者 许美玲 朱教君 +2 位作者 康宏樟 许爱华 张金鑫 《Journal of Forestry Research》 CAS CSCD 2008年第2期113-118,共6页
The effects of medium, pH, water potential and temperature on the culture for three pure strains (Lactarius deliciosus, Boletus edulis and Lactarius insulsus) of ectomycorrhizal fungi from plantation forests of Mong... The effects of medium, pH, water potential and temperature on the culture for three pure strains (Lactarius deliciosus, Boletus edulis and Lactarius insulsus) of ectomycorrhizal fungi from plantation forests of Mongolian pine (Pinus sylvestris var. mongolica) on sandy lands were observed to obtain the optimum conditions for the growth of ectomycorrhizal fungi. The results indicated that the three ectomycorrhizal fungi could grow well in the mediums containing natural components, such as vitamin, pine juice and yeast powder, pH had a slight effect on the growth of the three ectomycorrhizal fungi, and the optimum pH values were 6.0 for L. deliciosus, 5.0 for B. edulis, respectively. However, L. insulsus had a wide pH range, and it grew better than the other two strains in neutral and light alkalescent mediums. Water potential (produced by Polyethylene Glycol, PEG) had significant effects on the ecological adaptability for the tested three fungi strains. All of the three stains grow better at lower PEG concentration (100 g PEG.kg^-1 H2O). The best water potential was 10% PEG concentration for all of the three stains. Temperatures, especially high temperatures induced the fungi death. The optimum temperature for the growth of ectomycorrhizal fungi was 25-28℃ for all of the three stains. 展开更多
关键词 Mongolian pine (Pinus sylvestris var. mongolica) ectomycorrhizal fungi MEDIUM PH water potential TEMPERATURE
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Excessive Cu and Zn affecting on distribution of the metals and activities of glycolytic and nitrogen incorporating key enzymes in mycelia of ectomycorrhizal fungi Suillus bovinus 被引量:9
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作者 HUANG Yi, TAO Shu(Department of Urban and Environmental Sciences, Peking University, Beijing 100871, China. 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2001年第3期337-341,共5页
Concentration of copper and zinc in isolated Suillus bovinus mycelia, used nutrient solution and 0.5 mol/L EDTA mycelia washing solution were measured to investigate the distribution of heavy metals in mycelia growth ... Concentration of copper and zinc in isolated Suillus bovinus mycelia, used nutrient solution and 0.5 mol/L EDTA mycelia washing solution were measured to investigate the distribution of heavy metals in mycelia growth in excess copper or zinc nutrient solution. Treated with zinc, most of added zinc maintained in used solution, and 9.8%/14.6% was in/on mycelia in treatment, and in treatment 2 was 3.9%/8.0% in/on mycelia. In the copper applications, copper stimulated in more than on mycelia, i.e., 25.9%/4.5% in/on mycelia in treatment, and 7%/18.8% in/on mycelia while most of copper retained in used nutrient solution. Certain amount of copper or zinc uptake by mycelia led to pronounced influence on glycolysis and nitrogen incorporating process of Suillus bovinus, while the tested enzymes kept constant in treatment. In crude extracts of copper treatment 2 mycelia, activities of HK, PFK and GS were inhibited and decrease to 63%, 48% and 38% and GIDH increased by 68% of the control, respectively. The behaviors of these tested enzymes toward zinc corresponded in general with that towards copper. The potential protection of Suillus bovinus for its host plant under excess copper or zinc threaten was discussed. 展开更多
关键词 Suillus bovinus ectomycorrhizal fungous copper zinc GLYCOLYSIS nitrogen incorporate enzymes
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Influences of excessive Cu on photosynthesis and growth in ectomycorrhizal Pinus sylvestris seedlings 被引量:9
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作者 HUANGYi TAOShu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第3期414-419,共6页
Growth and photosynthesis responses were measured for Scots pine( Pinus sylvestris L. cv.) inoculated with ectomycorrhizal fungi( Suillus bovinus ) under 6 5 and 25 mg/L Cu treatments to evaluate ectomycorrhizal... Growth and photosynthesis responses were measured for Scots pine( Pinus sylvestris L. cv.) inoculated with ectomycorrhizal fungi( Suillus bovinus ) under 6 5 and 25 mg/L Cu treatments to evaluate ectomycorrhizal seedlings' tolerance to heavy metal stress.Results showed that excessive Cu can significantly impair the growth and photosynthesis of pine seedlings, but such impairment is much smaller to the ectomycorrhizal seedlings. Under 25 mg/L Cu treatment, the dry weight of ectomycorrhizal seedlings is 25% lower than the control in contrary to 53% of the non mycorrhizal seedlings, and the fresh weight of ectomycorrhizal roots was significantly higher than those of non mycorrhizal roots, about 25% and 42% higher at 6 5 and 25 mg/L Cu treatments respectively. Furthermore, ectomycorrhizal fungi induced remarkable difference in the growth rate and pigment content of seedlings under excessive Cu stress. At 25 mg/L Cu, the contents of total chlorophyll, chlorophyll a and chlorophyll b were 30% higher in ectomycorrhizal plants than those in non mycorrhizal plants. O 2 evolution and electron transport of PSI and PSII were restrained by elevated Cu stress. However, no significant improvement was observed in reducing the physiological restraining in ectomycorrhizal seedlings over the non mycorrhizal ones. 展开更多
关键词 COPPER ectomycorrhizal Pinus sylvestris PHOTOSYNTHESIS
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Ectomycorrhizal Fungi in Jiangsu Province,China 被引量:7
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作者 LIAN Bin DONG Yuan-Rong +2 位作者 HOU Wei-Guo TONG Li-Hua YUAN Sheng 《Pedosphere》 SCIE CAS CSCD 2007年第1期30-35,共6页
A survey was conducted for about 3 years to study the abundance and diversity of ectomycorrhizal fungi (EMF) in Jiangsu Province, China. The identification of the fungal species was based on the microscopic and macros... A survey was conducted for about 3 years to study the abundance and diversity of ectomycorrhizal fungi (EMF) in Jiangsu Province, China. The identification of the fungal species was based on the microscopic and macroscopic characteristics of their fruiting bodies. About 126 species of EMF were found in Jiangsu Province. These fungi were largely categorized into three orders (of 121 species), four families (of 96 species), and six genera (of about 86 species). 展开更多
关键词 BIODIVERSITY ectomycorrhizal fungi geographical distribution Jiangsu Province
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Biosorption Characteristics of Ectomycorrhizal Fungal Mycelium for Anthracene 被引量:4
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作者 YI HUANG,SHU-YING ZHANG,MING-JI LV,AND SHU-GUANG XIE College of Environmental Sciences and Engineering,Peking University,Beijing 100871,China 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2010年第5期378-383,共6页
Objective To investigate the potential of Gomphidius viscidus,a kind of ectomycorrhizal fungi,for phytoremediation of anthracene in soil.Methods Absorptioe changes of micro-habitat were studied in detail.Conclusion Ec... Objective To investigate the potential of Gomphidius viscidus,a kind of ectomycorrhizal fungi,for phytoremediation of anthracene in soil.Methods Absorptioe changes of micro-habitat were studied in detail.Conclusion Ectomycorrhizal plants have a strong potential for remediation of polycyclic aromatic hydrocarn characteristics of both active and inactivated mycelia.Results A high calculated adsorption capacity of 1 886.79 mg/g and 1 515.15 mg/g at 25 ℃,pH 6.0 for active and inactivated mycelia respectively,was obtained based on Langmuir model.The ANT biosorption was more ideally characterized by the Langmuir model than by the Freundlich model.The biosorption of anthracene to biomass was extremely fast and could be modeled with pseudo-second order adsorption kinetics.Moreover,ectomycorrhizal mycelia demonstrated a strong ability to adjust the physiological process to get adapted to the change of micro-habitat. 展开更多
关键词 BIOSORPTION PHYTOREMEDIATION Anthrocene ectomycorrhizal fungi
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Effects of an ectomycorrhizal fungus on the growth and physiology of Pinus sylvestris var. mongolica seedlings subjected to saline-alkali stress 被引量:3
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作者 Dachuan Yin Saiyaremu Halifu +3 位作者 Ruiqing Song Jinyu Qi Xun Deng Jifeng Deng 《Journal of Forestry Research》 SCIE CAS CSCD 2020年第3期781-788,共8页
This research investigates the mechanism of increased salinity tolerance of ectomycorrhizal fungiinoculated P. sylvestris var. mongolica to provide a theoretical basis for the application of the fungus in saline soils... This research investigates the mechanism of increased salinity tolerance of ectomycorrhizal fungiinoculated P. sylvestris var. mongolica to provide a theoretical basis for the application of the fungus in saline soils.Growth effects due to inoculation of seedlings with Suillus luteus(a symbiotic ectomycorrhizal fungus), were determined in four kinds of saline–alkali soils. Growth and physiological indicators, including photosynthetic characteristics, plant height, biomass, photosynthetic pigments,catalase(CAT) and superoxide dismutase(SOD) enzyme levels, and malondialdehyde(MDA), an organic marker for oxidative stress, and soluble protein levels were determined. Mycorrhizal colonization rate decreased with increasing saline–alkalinity and growth of inoculated seedlings was significantly enhanced. Biomass and chlorophyll contents also increased significantly. SOD and CAT activities were higher than in non-inoculated seedlings. However, MDA content decreased in inoculatedseedlings. Soluble protein content did not increase significantly. Inoculation with a symbiotic ectomycorrhizal fungus could enhance the saline–alkali tolerance of P. sylvestris var. mongolica. Growth and physiological performance of inoculated seedlings were significantly better than that of uninoculated seedlings. The results indicate that inoculated P. sylvestris var. mongolica seedlings may be useful in the improvement of saline–alkali lands. 展开更多
关键词 ectomycorrhizal fungi Saline–alkali stress PINUS SYLVESTRIS var MONGOLICA Physiological and biochemical mechanisms
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Bio-Mobilization of Potassium from Clay Minerals: Ⅱ. By Ectomycorrhizal Fungi 被引量:4
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作者 YUAN LING, WANG ZHIHUI, FANG DEHUA, SHUN HONG and HUANG JIANGUO (College of Resources and Environment, Southwest Agricultural University, Chongqing 400716 China) 《Pedosphere》 SCIE CAS CSCD 2000年第4期347-354,共8页
Ectomycorrhizal fungi, including Cenococcum geophilum SIV (Cg SIV), and Pisolithus tinctorius 2144 (Pt 2144), 441 (Pt 441) and XC1 (Pt XC1), were cultured in Pachlewski liquid medium with H2KPO4,KCl- saturated vermicu... Ectomycorrhizal fungi, including Cenococcum geophilum SIV (Cg SIV), and Pisolithus tinctorius 2144 (Pt 2144), 441 (Pt 441) and XC1 (Pt XC1), were cultured in Pachlewski liquid medium with H2KPO4,KCl- saturated vermiculite and mica as K sources, respectively, to investigate the mechanism of K absorption and mobilization by the fungi. Fungal growth rate, K absorption and mobilization varied significantly among the fungal species. Faster growth and greater K accumulation in Pt XC1 than Pt 2 144, Pt 441 and Cg siv were observed. Ectomycorrhizal fungi depressed HCl-soluble K in minerals after successive extractions by water and NH4OAc. Ratio of the total amount of K, including water-, NH4OAc- and HCI-soluble K, lost from substrates to the K accumulated in fungal colonies was less than 60%. These reveal that the ectomycorrhizal fungi could utilize K in interlayer and structural pools, which are usually unavailable for plants in short period. Large differences in the depletion of K in interlayer and structural pools by fungi were observed at fungal harvest. Taking into account the nutrient absorption by ectomycorrhizal fungi in symbionts and the direct contact between hyphae and soils, the fungi species colonized on the root surfaces seemed to be related to the effectiveness of mycorrhizas to utilize K in soils. Ectomycorrhizal fungi differed in the efflux of protons and oxalate. Pt XC1 was observed to have greatest ability to effuse protons and oxalate among the fungi adopted in the experiment. Furthermore, the higher the concentrations of protons and oxalate in the liquid culture solutions, the larger the depletion of K in interlayer and structural pools in minerals by fungi. Protons could replace interlayer K and chelation of oxalate with Fe and Al in crystal lattice could cause weathering of clay minerals. So, protons and oxalate produced by ectomycorrhizal fungi might play an important role in K mobilization in these two pools. 展开更多
关键词 ectomycorrhizal fungi K proton and oxalate
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Ectomycorrhizal Fungus-Induced Changes of Cu and Cd Speciation in the Rhizosphere of Chinese Pine Seedlings 被引量:2
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作者 HUANG Yi LI Ting HUANG Zhi-Ji FEI Ying-Heng 《Pedosphere》 SCIE CAS CSCD 2008年第6期758-765,共8页
To understand the role of ectomycorrhizas in improving the tolerance of its host to excessive heavy metals in soil, this study was conducted to exam the patterns of four fractions (the exchangeable, the carbonate-boun... To understand the role of ectomycorrhizas in improving the tolerance of its host to excessive heavy metals in soil, this study was conducted to exam the patterns of four fractions (the exchangeable, the carbonate-bound, the Fe-Mn oxide- bound and the organically bound) of both Cu and Cd in the rhizosphere of Chinese pine (Pinus tabulaeformis) seedlings grown in excessive Cu and Cd environment. The results showed that the speciation of Cu and Cd in the rhizosphere was significantly influenced by inoculation of ectomycorrhizal fungus Boletus edulis. Compared to the rhizosphere, the content of exchangeable Cu slightly decreased in the mycorrhizosphere of the seedlings grown in 166 and 400 mg kg-1 Cu contaminated soil, whereas the exchangeable Cd in the mycorrhizosphere decreased remarkably to only 33% and to 60% that of the rhizosphere at 0.75 and 1.50 mg kg-1 Cd levels, respectively. These indicate the potential capacity of mycorrhizas to alleviate the damage of heavy metals to the host plants by reducing the bioavailability of heavy metals in soil. Distribution of the 4 tested fractions of Cu and Cd at different contamination levels showed that there was a strong tendency of changing from loosely associated fractions to strongly associated fractions in the mycorrhizosphere. The most stable Cd fraction, organically bound Cd, was significantly larger in the mycorrhizosphere than in the rhizosphere at different Cd contamination levels. This phenomenon was also observed for Cu but the difference was not statistically significant. 展开更多
关键词 Chinese pine ectomycorrhizal fungus heavy metal speciation MYCORRHIZOSPHERE RHIZOSPHERE
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Infl uence of the slope aspect on the ectomycorrhizal fungal community of Quercus variabilis Blume in the middle part of the Taihang Mountains,North China 被引量:2
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作者 Songpo Wei Yijing Song Liming Jia 《Journal of Forestry Research》 SCIE CAS CSCD 2021年第1期385-400,共16页
The slope aspect is one of the most critical topographic factors in mountainous areas.Little is known,however,about the eff ect of the aspect on the ectomycorrhizal(ECM)fungal community.Additionally,we know very littl... The slope aspect is one of the most critical topographic factors in mountainous areas.Little is known,however,about the eff ect of the aspect on the ectomycorrhizal(ECM)fungal community.Additionally,we know very little about the composition of ECM fungal communities associated with Quercus variabilis,which is widely distributed in East Asia.In this study,we compared the richness,community composition,and exploration types of ECM fungi associated with Q.variabilis between predominantly south-and north-facing slopes in the Taihang Mountain,North China for the fi rst time.DNA was extracted from the root tips of Q.variabilis,and Illumina MiSeq sequencing was used to identify ECM fungi.In total,168 operational taxonomic units belonging to 28 genera were detected,and the ECM community was found to be dominated by Russula,Inocybe,Tomentella,Scleroderma,and Cortinarius.Compared with the north-facing slopes,the ECM communities on the south-facing slopes had higher diversity.The community composition and exploration types were directly aff ected by the slope aspect.Also,the aspect-induced edaphic variables,such as total phosphorus,total nitrogen,total potassium,pH,and soil water content,were important sources of variation in ECM fungal richness and distributions of exploration types.Diff erent genera tended to be distributed in various slope aspects.Cenococcum,Genea,and Clavulina were signifi cantly enriched in north-facing slopes,while Geopora,Helvelosebacina,Scleroderma,Gyroporus,Astraeus,Boletus,Tricholoma,Hebeloma,Cortinarius and unclassifi ed Thelephoraceae were more abundant in south-facing slopes.Hydrophobic ECM fungi were obviously enriched in the south-facing slope,but there was no statistical diff erence between hydrophilic among the south-and north-facing slopes.Our study deepened our knowledge of the aspect-driven variation in ECM fungal communities associated with Q.variabilis. 展开更多
关键词 ectomycorrhizal community Illumina sequencing Quercus variabilis Slope aspect Edaphic factors
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Distinguishing ectomycorrhizal and saprophytic fungi using carbon and nitrogen isotopic compositions 被引量:2
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作者 Weiguo Hou Bin Lian +2 位作者 Hailiang Dong Hongchen Jiang Xingliang Wu 《Geoscience Frontiers》 SCIE CAS 2012年第3期351-356,共6页
Ectomycorrhizal fungi, a group of widespread symbiotic fungi with plant, obtain carbon source from trees and improve plant mineral nutrient uptake with their widespread hyphal network. Ectomycorrhizal fungi can be use... Ectomycorrhizal fungi, a group of widespread symbiotic fungi with plant, obtain carbon source from trees and improve plant mineral nutrient uptake with their widespread hyphal network. Ectomycorrhizal fungi can be used as inoculants to improve the survival rates of plantation. Saprophytic fungi use the nutrition from the debris of plant or animals, and it is difficult to distinguish the saprophytic and ectomycorrhizal fungi by morphological and anatomic methods. In this research, the differences of stable carbon and nitrogen isotopic compositions of these fungi were analyzed. The results showed that the abundances of 13C of were higher than those of ectomycorrhizal fungi and the abundances of 15N of saprophytic fungi were lower than those of ectomycorrhizal fungi. Such differences of stable carbon and nitrogen isotopic compositions between ectomycorrhizal fungi and saprophytic fungi can be ascribed to their different nutrition sources and ecological functions. These results collectively indicate that stable carbon and nitrogen isotopic compositions are an effective proxy for distinguishing between ectomycorrhizal and saprophytic fungi. 展开更多
关键词 ectomycorrhizal fungi Saprophytic fungi Stable isotopiccompositions Ecological function
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Differential aluminum tolerance and absorption characteristics in Pinus massoniana seedlings colonized with ectomycorrhizal fungi of Lactarius deliciosus and Pisolithus tinctorius 被引量:1
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作者 Xirong Gu Hao Jia +3 位作者 Xiaohe Wang Yanan Jiang Jie Li Xinhua He 《Journal of Forestry Research》 SCIE CAS CSCD 2023年第5期1523-1533,共11页
Plant tolerance to aluminum(Al)toxicity can be enhanced by an ectomycorrhizal(ECM)fungus through biological filtering or physical blockage.To understand the roles of ECM colonization in Al absorption with regard to Al... Plant tolerance to aluminum(Al)toxicity can be enhanced by an ectomycorrhizal(ECM)fungus through biological filtering or physical blockage.To understand the roles of ECM colonization in Al absorption with regard to Al tolerance,Pinus massoniana seedlings were inoculated with either Lactarius deliciosus(L.:Fr.)Gray isolate 2 or Pisolithus tinctorius(Pers.)Coker et Couch isolate 715 and cultivated in an acid yellow soil with or without 1.0 mM Al^(3+)irrigation for 10 weeks.Biomass production,Al bioaccumulation and transport in seedlings colonized by the two ECM fungi were compared,and the three absorption kinetics(pseudo-first order,pseudo-second order and intraparticle diffusion)models used to evaluate variances in root Al^(3+)absorption capacity.Results show that both fungi increased aboveground biomass and Al tolerance of P.massoniana seedlings,but L.deliciosus 2 was more effective than P.tinctorius 715.Lower Al absorption capacity,fewer available active sites and decreased affinity and boundary layer thickness for Al^(3+),and higher Al accumulation and translocation contributed to the increased Al tolerance in the ECM-inoculated seedlings.These results advance our understanding of the mechanisms and strategies in plant Alto lerance conferred by ECM fungi and show that inoculation with L.deliciosus will better enhance Al tolerance in P.massoniana seedlings used for forest plantation and ecosystem restoration in acidic soils,particularly in Southwest China and similar soils worldwide. 展开更多
关键词 Acidic soil Aluminum accumulation Absorption characteristics ectomycorrhizal fungi Pinus massoniana
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Spatial patterns nitrogen transfer models of ectomycorrhizal networks in a Mongolian scotch pine plantation
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作者 Yanbin Liu Hongmei Chen Pu Mou 《Journal of Forestry Research》 SCIE CAS CSCD 2018年第2期337-344,共8页
Ectomycorrhizal(EM)networks provide a variety of services to plants and ecosystems include nutrient uptake and transfer,seedling survival,internal cycling of nutrients,plant competition,and so on.To deeply their struc... Ectomycorrhizal(EM)networks provide a variety of services to plants and ecosystems include nutrient uptake and transfer,seedling survival,internal cycling of nutrients,plant competition,and so on.To deeply their structure and function in ecosystems,we investigated the spatial patterns and nitrogen(N)transfer of EM networks usingN labelling technique in a Mongolian scotch pine(Pinus sylvestris var.mongolica Litv.)plantation in Northeastern China.In August 2011,four plots(20 × 20 m)were set up in the plantation.125 ml 5 at.%0.15 mol/LNHNOsolution was injected into soil at the center of each plot.Before and 2,6,30 and 215 days after theN application,needles(current year)of each pine were sampled along four 12 m sampling lines.Needle total N andN concentrations were analyzed.We observed needle N andN concentrations increased significantly over time afterN application,up to 31 and0.42%,respectively.There was no correlation between needle N concentration andN/N ratio(R2=0.40,n=5,P=0.156),while excess needle N concentration and excess needleN/N ratio were positively correlated across different time intervals(R~2=0.89,n=4,P\0.05),but deceased with time interval lengthening.NeedleN/N ratio increased with time,but it was not correlated with distance.NeedleN/N ratio was negative with distance before and 6th day and 30th day,positive with distance at 2nd day,but the trend was considerably weaker,their slop were close to zero.These results demonstrated that EM networks were ubiquitous and uniformly distributed in the Mongolian scotch pine plantation and a random network.We found N transfer efficiency was very high,absorbed N by EM network was transferred as wide as possible,we observed N uptake of plant had strong bias forN andN,namely N fractionation.Understanding the structure and function of EM networks in ecosystems may lead to a deeper understanding of ecological stability and evolution,and thus provide new theoretical approaches to improve conservation practices for the management of the Earth’s ecosystems. 展开更多
关键词 ectomycorrhizal networks Spatial patterns Nitrogen transfer Mongolian scotch pine plantation Stable isotope 15N labelling
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Ectomycorrhizal Fungi of Conifers and Their Economic Value From Xinjiang China
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作者 WANG Jun-yan Ayinuer 《新疆大学学报(自然科学版)》 CAS 2004年第z1期84-87,共4页
91 noteworthy ectomycorrhizal fungi associated with Larix sibirica Ledeb. etc. from Xing jiang are discussed. Hydnellum caeruleum(Horn. :Pers. )Karst. ,H. peckii Banker apud Peck,Cortinarius azureovelatus Orton,C. pin... 91 noteworthy ectomycorrhizal fungi associated with Larix sibirica Ledeb. etc. from Xing jiang are discussed. Hydnellum caeruleum(Horn. :Pers. )Karst. ,H. peckii Banker apud Peck,Cortinarius azureovelatus Orton,C. pinicola Orton, C. rickenianus Maire are new record to China. Among which 66 species are edible, 14 species are poisonous, 13 species are pharmaceutical, 22 species are probably anticancer. 展开更多
关键词 CONIFERS ectomycorrhizal fungi Economic value New records China Xin jiang.
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Ability of Ectomycorrhizal Fungns Laccaria bicolor S238Nto Increase the Growth of Donglas Fir Seedlings andTheir Phosphorns and Potassinm Uptake 被引量:3
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作者 HUANG JIANGUO and F. LAPEYRIE(Dept. of Soil Science, Southwest Agric. Univ. Chongqzig 630716(China))INRA. Microbiologie, Center de Nancy, Champenoux 54280 (France) 《Pedosphere》 SCIE CAS CSCD 1994年第3期217-224,共8页
Ectomycorrhizal fungus Laccaria bicolor S238N, isolated from a forest soil in central France in 1990s,has demonstrated unequivocally an ability to promote pine growth. In the present nursery bed experiment,the ability... Ectomycorrhizal fungus Laccaria bicolor S238N, isolated from a forest soil in central France in 1990s,has demonstrated unequivocally an ability to promote pine growth. In the present nursery bed experiment,the ability of this ectomycorrhizal fungus to increase growth and P and K uptake of Douglas Fir seedlings(Zone 22) was examined. Growth of inoculated seedlings was over twice (plant height) and three times(biomass) that of non-inoculated ones. Similarly, both the concentrations and the amounts of P and Kuptake by seedlings were significantly increased by fungal inoculation, indicating the improvement of P and Knutrition in mycorrhizal seedlings. In contrast, Al-p in the soils was decreased obviously by plants, especiallyby mycorrhizas, suggesting utilization of this soil P pool by plants and more efficient Al-P mobilization bymycorrhizas than by nonmycorrhizas. Moreover, K extracted by 1 mol/L HCl following consecutive extractionof H<sub>2</sub>O and CH<sub>3</sub>COONH<sub>4</sub>, which may not be plant available, could be utilized by fungus colonized roots.This could be explained by the release of protons and oxalate by hypae which leads to replacement of interlayerK in nonexpanded 2:1 clay minerals and bio-weathering of phyllosilicates. 展开更多
关键词 DOUGLAS FIR ectomycorrhizal FUNGI K P
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Edible Ectomycorrhizal Mushrooms Russula spp. of Côte d’Ivoire: Total Phenolic Content, HPLC-Profiles of Phenolic Compounds and Organic Acids, Antioxidant Activities
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作者 Kouamé Appolinaire Kouassi Eugène Jean Parfait Kouadio +2 位作者 Kouakou Martin Djè Ahipo Edmond Dué Lucien Patrice Kouamé 《Journal of Agricultural Chemistry and Environment》 2016年第2期73-84,共12页
The aim of this study was to investigate the phenolic compounds content, HPLC-profiles of phenolic compounds and organic acids, and also antioxidant activities via the ability to scavenge DPPH radical of three wild ed... The aim of this study was to investigate the phenolic compounds content, HPLC-profiles of phenolic compounds and organic acids, and also antioxidant activities via the ability to scavenge DPPH radical of three wild edible mushrooms belonging to Russula genus and being collected in center of Côte d’Ivoire. Total phenolic compounds, flavonoids and tannins contents of methanolic extracts were assessed by colorimetric assays. So, the obtained values of these chemical parameters ranged from 394.05 to 513.50 mg/100 g DW, 94.50 to 139.95 mg/100 g DW and from 124.20 to 165 ± 0.54 mg/100 g DW, respectively. Otherwise, HPLC-profiles of the methanolic extracts revealed that quercetin, salicylic acid and tannin ol were the main phenolic compounds in R. delica whereas R. lepida contained gallic acid, catechin and protocatechuic acid as main phenolic compounds. Besides, it showed that the phenolic compounds such as salicylic acid, tannin ol and catechin were observed in R. mustelina. As for HPLC-profiles of organic acid, the fumaric and malic acid were recorded as the main organic acids in the three species of wild edible mushrooms. However, citric acid content was found to be highest in R. lepida. The methanolic extracts of the three mushrooms exhibited high DPPH radical scavenging activities ranging from 74.92% to 58.92%. These wild edible mushrooms could be considered a potential supply source of adequate natural antioxidant for local population. 展开更多
关键词 ectomycorrhizal Mushrooms Côte d’Ivoire Phenolic Compounds Organic Acids DPPH Scavenging Activities
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Linking ectomycorrhizal mushroom species richness and composition with dominant trees in a tropical seasonal rainforest
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作者 Ediriweera AN Karunarathna SC +4 位作者 Xu J Bandara SMGS Gamage A Schaefer DA 《Studies in Fungi》 2020年第1期471-484,共14页
Vegetation,elevation gradient and soil temperature are considered as major drivers of ECM fungi species richness.ECM sporocarps were collected during rainy seasons for two years to study the link between the distribut... Vegetation,elevation gradient and soil temperature are considered as major drivers of ECM fungi species richness.ECM sporocarps were collected during rainy seasons for two years to study the link between the distribution of ECM mushrooms with Castonopsis echinocarpa,Parashorea chinensis,and Pittosporopsis kerrii with varying elevations and soil temperatures,in a tropical rain forest Xishuangbanna,Yunnan,China.For each tree species,60 trees of approximately the same size were selected,where half of them were growing at higher elevation levels and the rest at lower levels.The highest total counts of ECM fungi,as well as the highest species richness were produced by P.chinensis followed by C.echinocarpa and P.kerrii.Highest species richness was shown in September by P.chinensis,while P.kerrii trees had the lowest count of mushrooms across rainy seasons.Species of Boletales were recorded with highest species richness followed by species of order Agaricales around both C.echinocarpa and P.chinensis.ECM fungi count declined with increased elevation.Furthermore,fungi species richness increased positively with increased soil temperature in a tropical seasonal rainforest. 展开更多
关键词 ectomycorrhizal fungi ELEVATION soil temperature diversity XISHUANGBANNA
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Environmental barcoding of the ectomycorrhizal fungal genus Cortinarius 被引量:1
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作者 Suliana E.Teasdale Anne K.Beulke +1 位作者 Paul L.Guy David A.Orlovich 《Fungal Diversity》 SCIE 2013年第1期299-310,共12页
Understanding the role of ectomycorrhizal fungi in plant communities is hampered by a lack of knowledge about fungal diversity.DNA barcoding of the ectomycorrhizal fungal genus Cortinarius was used to compare fungal d... Understanding the role of ectomycorrhizal fungi in plant communities is hampered by a lack of knowledge about fungal diversity.DNA barcoding of the ectomycorrhizal fungal genus Cortinarius was used to compare fungal diversity in soil from four plant communities:(i)Nothofagus forest(where Cortinarius is common and diverse),(ii)Kunzea forest(where Cortinarius is present but with low diversity),(iii)a Pinus radiata plantation(Cortinarius is not thought to be present)and(iv)a sub-Antarctic island(where known ectomycorrhizal hosts are absent).PCR primers specific for the ITS region of Cortinarius species were developed.Specificity was tested in vitro and in silico against DNA from basidiocarps of Cortinarius and non-Cortinarius species.The primers were tested for their ability to amplify Cortinarius DNA in soil from forests of the three ectomycorrhizal forest communities and a range of soils from the ectomycorrhiza-free subantarctic Campbell Island.High diversity of Cortinarius was associated with soil of all three ectomycorrhizal communities,despite Cortinarius being previously unrecorded from Pinus.Soil from all three communities share some ectomycorrhizal fungi(including fungi shared between native and exotic hosts),having implications for community succession,introduction of exotic fungi and biodiversity assessment.No Cortinarius was detected from Campbell Island samples.The validated molecular protocol assessed species diversity in a rapid and cost effective way.Baseline biodiversity assessment based on DNA barcoding is more effective at detecting diversity than traditional methods,but requires careful consideration of the difference between ectomycorrhizal fungal diversity in soil versus root-tips. 展开更多
关键词 CORTINARIUS Internal transcribed spacer region ectomycorrhizal ecology Environmental DNA BARCODING Taxon-specific primers
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Large-diameter trees and deadwood correspond with belowground ectomycorrhizal fungal richness
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作者 Joseph D.Birch James A.Lutz +2 位作者 Soren Struckman Jessica R.Miesel Justine Karst 《Ecological Processes》 SCIE EI CSCD 2023年第1期31-45,共15页
Background: Large-diameter trees have an outsized influence on aboveground forest dynamics, composition, and structure. Although their influence on aboveground processes is well studied, their role in shaping belowgro... Background: Large-diameter trees have an outsized influence on aboveground forest dynamics, composition, and structure. Although their influence on aboveground processes is well studied, their role in shaping belowground fungal communities is largely unknown. We sought to test if (i) fungal community spatial structure matched aboveground forest structure;(ii) fungal functional guilds exhibited differential associations to aboveground trees, snags, and deadwood;and (iii) that large-diameter trees and snags have a larger influence on fungal community richness than smaller-diameter trees. We used MiSeq sequencing of fungal communities collected from soils in a spatially intensive survey in a portion of Cedar Breaks National Monument, Utah, USA. We used random forest models to explore the spatial structure of fungal communities as they relate to explicitly mapped trees and deadwood distributed across 1.15 ha of a 15.32-ha mapped subalpine forest. Results: We found 6,177 fungal amplicon sequence variants across 117 sequenced samples. Tree diameter, dead-wood presence, and tree species identity explained more than twice as much variation (38.7% vs. 10.4%) for ectomy-corrhizal composition and diversity than for the total or saprotrophic fungal communities. Species identity and dis-tance to the nearest large-diameter tree (≥ 40.2 cm) were better predictors of fungal richness than were the identity and distance to the nearest tree. Soil nutrients, topography, and tree species differentially influenced the composition and diversity of each fungal guild. Locally rare tree species had an outsized influence on fungal community richness. Conclusions: These results highlight that fungal guilds are differentially associated with the location, size, and species of aboveground trees. Large-diameter trees are implicated as drivers of belowground fungal diversity, particularly for ectomycorrhizal fungi. 展开更多
关键词 Belowground ecology ectomycorrhizal fungi Pinus flexilis Pinus longaeva Saprotrophic fungi Smithsonian ForestGEO Spatial dynamics Utah Forest Dynamics Plot
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Influence of ectomycorrhizal inoculation on Pinus wallichiana and Cedrus deodara seedlings under nursery conditions
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作者 Zahoor Ahmad ITOO Zafar A. RESHI 《Frontiers in Biology》 CAS CSCD 2014年第1期82-88,共7页
A study was undertaken to examine the extent of root colonization by four locally isolated ectomycorrhizal (ECM) fungi (Hebeloma theobrominum, Boletus dryophilus, Scleroderma citrinum and Suillus luteus) and their... A study was undertaken to examine the extent of root colonization by four locally isolated ectomycorrhizal (ECM) fungi (Hebeloma theobrominum, Boletus dryophilus, Scleroderma citrinum and Suillus luteus) and their effects on seedling growth in Pinus wallichiana and Cedrus deodara under nursery conditions. Seedlings of the two conifers were inoculated with mycelium of ECM fungi and were grown in pots containing sterilized forest soil for six months. The percentage of ECM colonization of roots was 38%-52% in Pinus wallichiana and 33%-48~ in Cedrus deodara. ECM colonization increased shoot height, needle number, shoot and root biomass and survival of inoculated seedlings. Among the four ECM fungi Hebeloma theobrominum was more effective with Pinus wallichiana and Scleroderma citrinum with Cedrus deodara in promoting seedling survival and overall growth. All the four ECM fungi used enhanced growth of inoculated seedlings and thus can be used in afforestation and regeneration programmes in degraded forests ecosystems. 展开更多
关键词 AFFORESTATION COLONIZATION ectomycorrhizal MYCELIUM seedling survival
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