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浙江大盘山映山红菌根真菌的分离和鉴定
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作者 刘亚 王盼 +2 位作者 周钰鸿 陈江芳 陈子林 《北方园艺》 CAS 北大核心 2019年第9期77-82,共6页
以浙江大盘山保护区的映山红(Rhododendron simsii)为试材,采用菌落形态分类和rDNA ITS序列分析方法,研究了野生映山红的菌根真菌种类及其组成,以期为栽培杜鹃花的菌根菌剂研发提供菌种参考依据。结果表明:映山红菌根真菌的8个菌种类型... 以浙江大盘山保护区的映山红(Rhododendron simsii)为试材,采用菌落形态分类和rDNA ITS序列分析方法,研究了野生映山红的菌根真菌种类及其组成,以期为栽培杜鹃花的菌根菌剂研发提供菌种参考依据。结果表明:映山红菌根真菌的8个菌种类型均属于子囊菌门,其中5个菌种类型14个菌株都属于Helotiales锤舌菌目,占菌种类型总数的62.5%和菌株总数的66.67%;3个优势菌种类型N5 Phialocephala fortinii、N7 Ilyonectria leucospermi、N8 Nemania sp.分别占菌株总数的42.86%、14.29%和14.29%;此外,还有Rhizodermea veluwensis、Pezicula ericae、Oidiodendron sp.、Helotiales sp.、Uncultured Chaetomium等菌种类型。 展开更多
关键词 映山红 菌根 菌根真菌 浙江大盘山
Arbuscular mycorrhizal fungi ameliorate the chemical properties and enzyme activities of rhizosphere soil in reclaimed mining subsidence in northwestern China
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作者 QIU Lang BI Yinli +3 位作者 JIANG Bin WANG Zhigang ZHANG Yanxu Yryszhan ZHAKYPBEK 《干旱区科学:英文版》 SCIE CSCD 2019年第1期135-147,共13页
In semi-arid region of northwestern China, underground mining subsidence often results in decreased vegetation coverage, impoverishment of soil fertility and water stress. In addition, the physical-chemical and biolog... In semi-arid region of northwestern China, underground mining subsidence often results in decreased vegetation coverage, impoverishment of soil fertility and water stress. In addition, the physical-chemical and biological properties of soil also change, resulting in more susceptible to degradation. In particular, subsidence causes disturbance of the symbioses of plant and microbe that can play a beneficial role in the establishment of vegetation communities in degraded ecosystems. The objective of this study was to evaluate the effects of revegetation with exotic arbuscular mycorrhizal fungi(AMF) inoculum on the chemical and biological properties of soil over time in mining subsidence areas. Soils were sampled at a depth up to 30 cm in the adjacent rhizosphere of Amorpha fruticose Linn. from five reclaimed vegetation communities in northwestern China. In August 2015, a field trial was set up with five historical revegetation experiments established in 2008(7-year), 2011(4-year), 2012(3-year), 2013(2-year) and 2014(1-year), respectively. Each reclamation experiment included two treatments, i.e., revegetation with exotic AMF inoculum(AMF) and non-AMF inoculum(the control). Root mycorrhizal colonization, glomalin-related soil protein(GRSP), soil organic carbon(SOC), soil nutrients, and enzyme activities were also assessed. The results showed that mycorrhizal colonization of inoculated plants increased by 33.3%–163.0% compared to that of non-inoculated plants(P<0.05). Revegetation with exotic AMF inoculum also significantly improved total GRSR(T-GRSP) and easily extracted GRSP(EE-GRSP) concentrations compared to control, besides the T-GRSP in 1-year experiment and the EE-GRSP in 2-year experiment. A significant increase in SOC content was only observed in 7-year AMF reclaimed soils compared to non-AMF reclaimed soils. Soil total N(TN), Olsen phosphorus(P) and available potassium(K) were significantly higher in inoculated soil after 1–7 years of reclamation(except for individual cases), and increased with reclamat 展开更多
关键词 REVEGETATION MYCORRHIZAL COLONIZATION glomalin-related soil proteins ARBUSCULAR MYCORRHIZAL fungi coal mining Amorpha fruticose
Arbuscular mycorrhizal fungi combined with exogenous calcium improves the growth of peanut(Arachis hypogaea L.)seedlings under continuous cropping 预览
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作者 CUI Li GUO Feng +6 位作者 ZHANG Jia-lei YANG Sha MENG Jing-jing GENG Yun WANG Quan LI Xin-guo WAN Shu-bo 《农业科学学报:英文版》 SCIE CAS CSCD 2019年第2期407-416,共10页
The growth and yield of peanut are negatively affected by continuous cropping.Arbuscular mycorrhizal fungi(AMF)and calcium ions(Ca2+)have been used to improve stress resistance in other plants,but little is known abou... The growth and yield of peanut are negatively affected by continuous cropping.Arbuscular mycorrhizal fungi(AMF)and calcium ions(Ca2+)have been used to improve stress resistance in other plants,but little is known about their roles in peanut seedling growth under continuous cropping.This study investigated the possible roles of the AMF Glomus mosseae combined with exogenous Ca2+in improving the physiological responses of peanut seedlings under continuous cropping.G.mosseae combined with exogenous Ca2+can enhance plant biomass,Ca2+level,and total chlorophyll content.Under exogenous Ca2+application,the Fv/Fm in arbuscular mycorrhizal(AM)plant leaves was higher than that in the control plants when they were exposed to high irradiance levels.The peroxidase,superoxide dismutase,and catalase activities in AM plant leaves also reached their maximums,and accordingly,the malondialdehyde content was the lowest compared to other treatments.Additionally,root activity,and content of total phenolics and flavonoids were significantly increased in AM plant roots treated by Ca2+compared to either G.mosseae inoculation or Ca2+treatment alone.Transcription levels of AhCaM,AhCDPK,AhRAM1,and AhRAM2 were significantly improved in AM plant roots under exogenous Ca2+treatment.This implied that exogenous Ca2+might be involved in the regulation of G.mosseae colonization of peanut plants,and in turn,AM symbiosis might activate the Ca2+signal transduction pathway.The combination of AMF and Ca2+benefitted plant growth and development under continuous cropping,suggesting that it is a promising method to cope with the stress caused by continuous cropping. 展开更多
关键词 ARACHIS HYPOGAEA L. ARBUSCULAR MYCORRHIZAL fungi continuous CROPPING exogenous calcium
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Trait complementarity between fine roots of Stipa purpurea and their associated arbuscular mycorrhizal fungi along a precipitation gradient in Tibetan alpine steppe
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作者 ZHANG Jing WANG Ping +3 位作者 XUE Kai HAO Yan-bin WANG Yan-fen CUI Xiao-yong 《山地科学学报:英文版》 SCIE CSCD 2019年第3期542-547,共6页
Development of fine roots and formation of symbiosis with arbuscular mycorrhizal(AM) fungi represent two strategies for plants to acquire nutrient and water from soil. Here, we elucidated how fine root development and... Development of fine roots and formation of symbiosis with arbuscular mycorrhizal(AM) fungi represent two strategies for plants to acquire nutrient and water from soil. Here, we elucidated how fine root development and symbolized mycorrhizal fungi with Stipa purpurea responded to the precipitation change in Tibetan alpine steppe ecosystem across a precipitation gradient from 50 mm to 400 mm. As precipitation increased, the proportion of thinner fine roots(diameter < 0.4 mm) in total roots increased significantly;while the mycorrhizal colonization percentage, either associated with thinner or thicker roots, decreased. This phenomenon indicated that fine root development and symbolized mycorrhizal fungi are likely alternative, and plant preferred to develop fine root rather than build a symbiotic relationship with mycorrhizal fungi in more benign niches with higher precipitation. Also, root diameter was negatively correlated with specific root length(SRL), but positively correlated with AM fungal colonization percentage, indicating thicker-root species rely more on mycorrhizal fungi in alpine steppe. The complementarity between fine root and mycorrhizal fungi of S. purpurea is mediated by precipitation in Tibetan alpine steppe. 展开更多
关键词 ARBUSCULAR MYCORRHIZAL fungal colonization Root diameter Trait complementarity Precipitation STIPA PURPUREA ALPINE STEPPE
Transcriptome analysis of the symbiosis-related genes between Funneliformis mosseae and Amorpha fruticosa 预览
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作者 Xuan Liu Mingguo Jiang Fuqiang Song 《林业研究:英文版》 CAS CSCD 2019年第2期483-495,共13页
Arbuscular mycorrhizal fungi(AMF)can colonize and form associations with the roots of Amorpha fruticosa L.(desert false indigo).Various genes are induced during the symbiotic process.In this study,de novo transcriptom... Arbuscular mycorrhizal fungi(AMF)can colonize and form associations with the roots of Amorpha fruticosa L.(desert false indigo).Various genes are induced during the symbiotic process.In this study,de novo transcriptome sequencing using RNA-seq was conducted for the first time for a comprehensive analysis of AMF-A.fruticosa symbionts at the transcript level.We obtained 12G of raw data from illumina sequencing and recovered 115,786 unigenes with an average length of 547 bp,among them 41,848 of significance.A total of 2460 diffexpression genes were identified,including 1579 down-regulated and 881 up-regulated genes.A threshold for false discovery rate of<0.001 and fold change of>1 determined significant differences in gene expression.Using these criteria,we screened 285 significant differentially expressed genes,of which 82 were up-regulated and 203 down-regulated.The 82 up-regulated genes were classified according to their functions and assigned into seven categories:stress and defense,metabolism,signaling transduction,protein folding and degradation,energy,protein synthesis,and transcription.The 203 down-regulated genes were screened according to fold change>2,and 50 highly significant down-regulated genes were obtained related to stress and defense.The results of this study will provide a useful foundation for further investigation on the metabolic characteristics and molecular mechanisms of AMF associations with leguminous woody shrubs. 展开更多
关键词 Amorpha fruticose ARBUSCULAR MYCORRHIZAL FUNGI RNA-SEQ Symbiosis-related gene QUANTITATIVE real-time PCR
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Humus-Rich Compost Increases Lettuce Growth, Nutrient Uptake, Mycorrhizal Colonisation, and Soil Fertility
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作者 Zakaria M.SOLAIMAN Hongjun YANG +3 位作者 Deb ARCHDEACON Orna TIPPETT Michaela TIBI Andrew S.WHITELEY 《土壤圈:英文版》 SCIE CAS CSCD 2019年第2期170-179,共10页
Sandy soils, typical of Australia’s west, either have little or no habitat protection for microbes including arbuscular mycorrhizal(AM) fungi, which are essential for nutrient cycling. To minimize this problem, the a... Sandy soils, typical of Australia’s west, either have little or no habitat protection for microbes including arbuscular mycorrhizal(AM) fungi, which are essential for nutrient cycling. To minimize this problem, the application of organic matter, such as humus-rich composts, is necessary during vegetable crop production. This study aimed at determining the effects of humus-rich composts on either indigenous or inoculated AM fungal colonisation in roots, lettuce(Lactuca sativa L. var. Quechua) growth, and soil fertility improvement. Four different humus-rich composts with varying humus contents were applied at the same standard rate to lettuce grown under glasshouse conditions for 10 weeks after sowing and compared with two low-humus composts and non-amended soil(control). Humus-rich composts significantly increased lettuce shoot growth, root growth, and AM fungal colonisation in roots. Humus contents in the composts were also correlated with lettuce shoot and root growth. Soil dissolved organic carbon, microbial biomass carbon, and fertility were increased with the application of humus-rich composts. These humus-rich composts, especially the compost of higher humic acid with and without AM inoculation, might have a significant role in sustainable vegetable production, for example lettuce growth. Overall, the results indicate that supplementation with humus-rich compost is highly beneficial to enhance soil fertility and potentially maintain the sustainability of vegetable production. 展开更多
关键词 ARBUSCULAR MYCORRHIZAL fungi HUMUS nitrogen phosphorus vegetable production
Coinoculation of bioinoculants improve Acacia auriculiformis seedling growth and quality in a tropical Alfisol soil 预览
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作者 Thangavelu Muthukumar Karuthamuthu Udaiyan 《林业研究:英文版》 CAS CSCD 2018年第3期660-670,共11页
We conducted a study to find out if arbuscular mycorrhizal(AM)fungi(Acaulospora scrobiculata,Scutellospora calospora)and phosphate solubilizing bacteria(PSB,Paenibacillus polymyxa)inoculation either individually or in... We conducted a study to find out if arbuscular mycorrhizal(AM)fungi(Acaulospora scrobiculata,Scutellospora calospora)and phosphate solubilizing bacteria(PSB,Paenibacillus polymyxa)inoculation either individually or in combinations can improve Acacia auriculiformis seedling growth,uptake of nutrients and quality in a phosphorus deficient tropical Alfisol.The seedlings were assessed for various growth and nutrient uptake parameters after 60 days of treatment.Inoculation with P.polymyxa stimulated mycorrhizal formation.Seedling height,stem girth,taproot length,number of leaves and leaf area,plant dry matter production,nodulation,and nodular dry weight were significantly higher for seedlings that were either dual inoculated or triple inoculated compared to individual inoculation of AM fungi or PSB,and uninoculated seedlings.Dual and triple application of AM fungi and PSB also significantly improved the nutrient contents of shoots and roots and nutrient uptake efficiencies.The calculated seedling quality indexes of the AM fungi and PSB inoculated seedling were 25–208%higher than uninoculated seedlings.These findings show that A.auriculiformis seedlings when dual inoculated or triple inoculated performed better than seedlings inoculated with the microbes individually and compared with uninoculated control seedlings.We conclude that bioinoculation is important for the production of high-quality A.auriculiformis seedlings in tree nurseries for planting in nutrient deficient soils. 展开更多
关键词 ARBUSCULAR MYCORRHIZAL fungi Nutrient uptake efficiency PAENIBACILLUS polymyxa Relative field MYCORRHIZAL dependency Seedling QUALITY
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耕种措施对农田生态系统AM真菌群落结构的影响 被引量:1
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作者 宋福强 刘宇飞 范晓旭 《菌物学报》 CSCD 北大核心 2018年第8期988-998,共11页
丛枝菌根(arbuscular mycorrhiza,AM)真菌群落在农田生态系统过程中扮演着重要角色,其在改善土壤结构、增强土壤肥力、提高作物产量和抗病抗逆性等方面发挥着重要的功能。但由于农田生态系统是一种受人为干扰非常强烈的半自然生态系统... 丛枝菌根(arbuscular mycorrhiza,AM)真菌群落在农田生态系统过程中扮演着重要角色,其在改善土壤结构、增强土壤肥力、提高作物产量和抗病抗逆性等方面发挥着重要的功能。但由于农田生态系统是一种受人为干扰非常强烈的半自然生态系统,特别是施肥、种植模式、喷施农药等耕种措施均对AM真菌侵染强度、生物量、孢子密度和群落多样性产生一定的影响。本文综述了近十几年来耕种措施对AM真菌群落结构的影响,以期通过利用合理的耕作与管理措施,提高AM真菌对农田生态系统生产力的生态效应,建立符合生态、经济和社会三重效益的可持续发展型现代化农业。 展开更多
关键词 AM真菌 菌根侵染率 孢子密度 耕种
Natural Colonization of Rice by Arbuscular Mycorrhizal Fungi in Different Production Areas 预览
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作者 Lina BERNAOLA Grace CANGE +3 位作者 Michael O.WAY Jeffrey GORE Jarrod HARDKE Michael STOUT 《水稻科学:英文版》 CSCD 2018年第3期169-174,共6页
Interactions between plants and soil microorganisms can influence the other interactions in which plants participate,including interactions with herbivores.Many fungi,including arbuscular mycorrhizal fungi(AMF),form s... Interactions between plants and soil microorganisms can influence the other interactions in which plants participate,including interactions with herbivores.Many fungi,including arbuscular mycorrhizal fungi(AMF),form symbiotic relationships with the roots they inhabit,and potentially alter defense against pests.The objective of this study was to document the extent of root colonization by AMF on non-flooded rice plants grown under conditions typical of commercial fields.We hypothesized that AMF naturally colonized rice plants in different rice producing field locations.Rice plant samples were collected from areas across the southern United States,including Texas,Mississippi,Arkansas and two research stations in Louisiana.We quantified the amount of AMF colonization in insecticide-free rice plants over three consecutive years(2014–2016).The results revealed natural colonization of AMF in all rice producing areas.In all the three years of survey,rice-AMF associations were the greatest in Arkansas followed by Mississippi and Texas.This research will help draw attention to natural colonization of AMF in rice producing areas that can impact future rice research and production by facilitating agricultural exploitation of the symbiosis. 展开更多
关键词 ARBUSCULAR MYCORRHIZAL FUNGUS RICE ROOT COLONIZATION soil quality agriculture
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Medicago AP2-Domain Transcription Factor WRI5a Is a Master Regulator of Lipid Biosynthesis and Transfer during Mycorrhizal Symbiosis
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作者 Yina Jiang Qiujin Xie +5 位作者 Wanxiao Wang Jun Yang Xiaowei Zhang Nan Yu Yun Zhou Ertao Wang 《分子植物:英文版》 SCIE CAS CSCD 2018年第11期1344-1359,共16页
Most land plants have evolved a mutualistic symbiosis with arbuscular mycorrhiza (AM)fungi that improve nutrient acquisition from the soil.In return,up to 20% of host plant photosynthate is transferred to the mycorrhi... Most land plants have evolved a mutualistic symbiosis with arbuscular mycorrhiza (AM)fungi that improve nutrient acquisition from the soil.In return,up to 20% of host plant photosynthate is transferred to the mycorrhizal fungus in the form of lipids and sugar.Nutrient exchange must be regulated by both partners in order to maintain a reliable symbiotic relationship.However,the mechanisms underlying the regulation of lipid transfer from the plantto the AM fungus remain elusive.Here,we show that the Medicago truncatula AP2/EREBP transcription factor WRI5a,and likely its two homologs WRI5b/Erfl and WRI5c,are master regulators of AM symbiosis Controlling lipid transfer and periarbuscular membrane formation.We found that WRI5a binds AW-box cis-regulatory elements in the promoters of M.truncatula STR,which encodes a periarbuscular membrane-localized ABC transporter required for lipid transfer from the plant to the AM fungus, and MtPT4,whichr encodes a phosphate transporter required for phosphate transfer from the AM fungus to the plant.The hairy roots of the M.truncatula wti5a mutant and RNAi composite plants displayed impaired arbuscule formation,whereas overexpression of WRI5a resulted in enhanced expression of STR and MtPT4,suggesting that WRI5a regulates bidirectional symbiotic nutrient exchange.Moreover,we found that WRI5a and RAM1(Required for Arbuscular Mycorrhization symbiosis 1),which encodes a GRASdomain transcription factor,regulate each other at the transcriptional level,forming a positive feedback loop for regulatingAM symbiosis.Collectively,our data suggest a role for WRI5a in controlling bidirectional nutrient exchange and periarbuscular membrane formation via the regulation of genes involved in the biosynthesis of fatty acids and phosphate uptake in arbuscule-containing cells. 展开更多
关键词 MYCORRHIZAL SYMBIOSIS lipid transfer TRANSCRIPTION factor AW box
菌根化沙枣苗木培育技术 预览
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作者 姜思佳 赵利群 +5 位作者 李滨胜 焦丽 韩曦 李长海 曲红焱 宋福强 《黑龙江八一农垦大学学报》 2017年第6期6-8,44共4页
沙枣树可营造沙枣经济林、防护林,绿化美化城市等作用,沙枣苗木短缺的情况下,概述了菌根化沙枣苗木培育技术,主要介绍了菌剂制备、种子采收与调制、种子贮藏、菌根化苗木培育、苗木出圃、档案管理等六方面的技术。
关键词 菌根化 沙枣 培育
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细根异速分解的3个可能影响途径 被引量:2
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作者 王存国 陈正侠 +2 位作者 马承恩 林贵刚 韩士杰 《北京林业大学学报》 CAS CSCD 北大核心 2016年第4期123-128,共6页
植物根系分解是驱动陆地生态系统碳和养分循环的关键过程之一。直径小于2 mm的根是一个复杂的异质性细根系统。位于细根系统末端的低级根(如1~3级根)或直径较小的细根(如直径小于0.5 mm的细根),执行水分和养分吸收功能,其周转迅速(... 植物根系分解是驱动陆地生态系统碳和养分循环的关键过程之一。直径小于2 mm的根是一个复杂的异质性细根系统。位于细根系统末端的低级根(如1~3级根)或直径较小的细根(如直径小于0.5 mm的细根),执行水分和养分吸收功能,其周转迅速(0.5~2.5次/a),是植物根系向土壤输入碳和养分的主要途径。近年来对细根分解的研究表明,在细根系统中,低级根的分解速率显著慢于高级根(如3级以上的根)或直径较大的细根(如直径大于0.5 mm的细根),执行输导和储藏功能。本文综述了影响细根异速分解的3个可能途径:菌根、碳质量和氮含量,旨在增强研究者对全球变化下细根功能属性(如细根直径)如何影响生态系统碳和养分循环的理解。 展开更多
关键词 细根 异速分解 菌根 碳质量 氮含量
氮沉降对植物-丛枝菌根共生体影响的研究进展 预览 被引量:1
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作者 蔺吉祥 杨雨衡 +3 位作者 王英男 闫晓亮 邵帅 阎秀峰 《草原与草坪》 CAS CSCD 2015年第3期88-94,共7页
氮沉降是影响陆地生态系统的重要环境因子。丛枝菌根真菌(AMF)作为一种能够与绝大多数植物共生并广泛存在的土壤微生物,对植物生长、养分吸收以及抗逆性等均具有重要的调节作用,而针对氮沉降对植物-丛枝菌根共生体影响的研究往往被忽... 氮沉降是影响陆地生态系统的重要环境因子。丛枝菌根真菌(AMF)作为一种能够与绝大多数植物共生并广泛存在的土壤微生物,对植物生长、养分吸收以及抗逆性等均具有重要的调节作用,而针对氮沉降对植物-丛枝菌根共生体影响的研究往往被忽视。基于此,笔者从氮沉降对菌根侵染特性、菌根多样性、菌根对宿主植物生长发育、氮代谢、磷吸收以及对宿主植物生物多样性影响等方面进行了归纳总结,并提出应重点关注的研究方向,旨为菌根生理生态学的研究提供一定的科学依据。 展开更多
关键词 氮沉降 丛植菌根 侵染特性 氮代谢
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攀枝花块菌菌根苗培育及显微结构研究 被引量:2
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作者 柳成益 杨梅 +4 位作者 唐平 李小林 肖玉军 郑林用 王云 《中国食用菌》 2014年第4期14-16,共3页
攀枝花块菌是国内到现在为止发现的唯一具有较高经济价值和商业价值的白色块菌新种。对攀枝花块菌与云南松合成菌根苗的技术进行了研究,结果表明用攀枝花块菌孢子接种云南松树苗3个月可形成菌根,菌根呈单轴状和二叉状分枝,菌根尖淡... 攀枝花块菌是国内到现在为止发现的唯一具有较高经济价值和商业价值的白色块菌新种。对攀枝花块菌与云南松合成菌根苗的技术进行了研究,结果表明用攀枝花块菌孢子接种云南松树苗3个月可形成菌根,菌根呈单轴状和二叉状分枝,菌根尖淡乳色,基部淡黄色、黄褐色,单根菌根平均长4.66mm,平均粗为1.40mm;外延菌丝为透明、半透明直立着生在菌根表面,与意大利白块菌、波氏块菌的外延菌丝相似,菌根表面呈马蹄状的哈蒂氏网结构。 展开更多
关键词 攀枝花块菌 云南松 菌根 显微结构
菌根对磷石膏利用土壤主要化学性质的影响 预览 被引量:2
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作者 贾广军 白来汉 +4 位作者 史静 张乃明 岳献荣 段红平 夏运生 《云南农业大学学报:自然科学版》 CAS CSCD 北大核心 2014年第5期719-726,共8页
磷石膏(Phosphogypsum,PG)在农业生产、土壤改良等方面的应用受到越来越广泛的关注.本文通过盆栽模拟试验研究了不同磷石膏添加水平(0,20,40 g/kg)和接种3种丛枝菌根真菌[Glomus mosseae (GM)、Glomus aggregatum (GA)、Diversi... 磷石膏(Phosphogypsum,PG)在农业生产、土壤改良等方面的应用受到越来越广泛的关注.本文通过盆栽模拟试验研究了不同磷石膏添加水平(0,20,40 g/kg)和接种3种丛枝菌根真菌[Glomus mosseae (GM)、Glomus aggregatum (GA)、Diversispora spurcum (DS)]对玉米与小葱种植土壤主要化学性质的影响.试验结果表明:随磷石膏添加量的增加,小葱种植土壤的pH值和速效磷质量分数分别随之显著降低和提高、砷(As)质量分数除DS处理外也随之显著增加,玉米种植土壤的pH值随之呈现下降趋势、速效磷质量分数和As质量分数除GM处理外也随之增加;与PG0处理相比,磷石膏的添加还显著增加了玉米、小葱种植土壤的有效硫质量分数.PG20和PG40添加处理下,与不接种相比,GA和DS处理能有效增加玉米种植土壤的速效磷质量分数,却显著降低了有效硫的质量分数;GM和DS处理则能不同程度增加小葱种植土壤的速效磷和有效硫质量分数.接种GM菌根真菌对玉米种植土壤As质量分数有显著降低作用;接种DS菌根真菌则对小葱种植土壤As质量分数也有降低作用.可见,所有复合处理中,以PG40-GM组合处理和PG40-DS组合处理分别对玉米、小葱种植土壤的主要化学属性改良效果较好. 展开更多
关键词 菌根 磷石膏(PG) 玉米(Zea mays L.) 小葱(Allium schoenoprasum L.) 土壤化学性质
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基于指数施肥法的一年生油松菌根化容器苗的供N研究 预览 被引量:1
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作者 汪力 郭素娟 刘正民 《生物学杂志》 CAS CSCD 2013年第5期27-32,共6页
为了探讨一年生菌根化油松容器苗的最适苗木供N量和供N速率,采用4种不同指数施肥量进行了试验.通过测定苗木生物量和N含量,显示总供N量为80 mg·株-1的处理组在生物量积累和苗木N含量上显著优于其它各组(P〈0.05);在100 d时,该处... 为了探讨一年生菌根化油松容器苗的最适苗木供N量和供N速率,采用4种不同指数施肥量进行了试验.通过测定苗木生物量和N含量,显示总供N量为80 mg·株-1的处理组在生物量积累和苗木N含量上显著优于其它各组(P〈0.05);在100 d时,该处理可获得0.47 mg·株-1·d-1的N最适添加速率;在该速率下,苗木生物量、N含量分别可以达到845.60 mg·株-1和6.51 mg·株-1.根据生物量和N含量随着供N量增加的回归拟合结果,在107 d的生长过程中,67.96 mg·株-1至84.15 mg·株-1的供N总量可以使得一年生油松幼苗获得较高的生物量积累水平和N含量. 展开更多
关键词 菌根 油松 指数施肥 生物量
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重金属污染土壤的生物修复——菌根技术的应用 预览 被引量:2
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作者 胡睿 《环境与可持续发展》 2013年第6期50-52,共3页
本文阐述了重金属污染土壤的修复现状,提出菌根修复技术做为土壤重金属污染生物修复技术是目前研究的热点。主要从其作用原理和已有研究成果分析菌根技术的优越性,并提出不足和发展展望。
关键词 重金属污染 土壤 生物修复 菌根
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海泡石与菌根对污染土壤中Pb、Cd、Zn形态的影响 预览 被引量:2
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作者 杨秀敏 潘宇 +1 位作者 钟子楠 罗克杰 《黑龙江科技学院学报》 CAS 2012年第5期497-500,共4页
为修复重金属复合污染的土壤,采用连续提取法,通过盆栽实验研究了海泡石与菌根对土壤重金属Pb、Cd、zn形态的影响。结果表明:海泡石可使Pb、Cd的可交换态转化成其他4种形态,使zn的可交换态转化成碳酸盐结合态、有机物结合态和残渣... 为修复重金属复合污染的土壤,采用连续提取法,通过盆栽实验研究了海泡石与菌根对土壤重金属Pb、Cd、zn形态的影响。结果表明:海泡石可使Pb、Cd的可交换态转化成其他4种形态,使zn的可交换态转化成碳酸盐结合态、有机物结合态和残渣态;茵根能显著增加可交换态的Pb、Cd、Zn浓度,降低了Pb的碳酸盐结合态、Cd的铁锰氧化态、Zn的有机物结合态的浓度。海泡石和茵根联合处理同单施海泡石的结果相似,说明联合修复中对重金属形态的影响海泡石起主导作用。该研究证实了海泡石可以调节重金属Pb、Cd、Zn的形态,从而降低污染土壤中重金属的生物有效性。 展开更多
关键词 海泡石 菌根 土壤 重金属形态
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Effects of Arbuscular Mycorrhizal Fungi (AMF) on Distribution of Pb Forms in Rhizosphere of Upland Rice 预览
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作者 Xuhong ZHANG Aijun LIN +1 位作者 Xin ZHANG Lanping GUO 《农业科学与技术:英文版》 CAS 2012年第7期1484-1488,1520共6页
Abstract [Objective] The aim was to study the effects of AMF on distribution of Pb in different chemical forms in rhizosphere soil of upland rice. [Method] A pot experi- ment was conducted to explore effects of AMF in... Abstract [Objective] The aim was to study the effects of AMF on distribution of Pb in different chemical forms in rhizosphere soil of upland rice. [Method] A pot experi- ment was conducted to explore effects of AMF inoculation on distribution of Pb in different forms in rhizosphere of rice (Oryzal sativa L.) with Pb in different concen- trations (0, 300 and 600 mg/kg). [Resultl With inoculation adopted, mycorrzhial colo- nization rate of upland rice under Pb pdlution root declined substantially with Pb in- creasing in soils (P〈0.05). Compared with non-inoculation, rhizosphere pH signifi- cantly enhanced by inoculation; when Pb was at 300 mg/kg, glomalin content in soils improved significantly by inoculation; when Pb was at 600 mg/kg, glomalin con- tent in soils declined substantially (P〈0.05). In addition, inoculation significantly im- proved contents of Pb in exchangeable and organic forms, but lowered Pb in car- bonate bound and Fe-Mn oxides bound forms (P〈0.05). [Conclusion] The research indicated that AMF inoculation would change distribution of Pb in different forms in rhizesphere soils of upland rice. 展开更多
关键词 Key words PB DISTRIBUTION ARBUSCULAR MYCORRHIZAL fungi UPLAND rice RHIZOSPHERE
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菌根菌生物量测定方法比较 预览
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作者 张智文 李长田 +2 位作者 于逸竹 秦智亨 田风华 《北方园艺》 CAS 北大核心 2011年第21期 174-177,共4页
菌根菌以其与宿主植物的密切共生关系和生态学意义已成为今天生物科学研究的热点之一,对其生物量的准确定量也一直是人们研究的方向,但由于菌根菌的特殊生态型,人们对其生物量的研究仍然处在探索阶段。现对关于菌根菌生物量研究的意义... 菌根菌以其与宿主植物的密切共生关系和生态学意义已成为今天生物科学研究的热点之一,对其生物量的准确定量也一直是人们研究的方向,但由于菌根菌的特殊生态型,人们对其生物量的研究仍然处在探索阶段。现对关于菌根菌生物量研究的意义和常用的测定方法进行阐述和分析,以求为外生菌根菌的生物量定量方法的选择运用提供科学参考。 展开更多
关键词 菌根 菌根菌 森林生态系统 生物量
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