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枫桦红松林凋落物分解真菌生态群的研究 被引量:10
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作者 潘学仁 黄永青 刘传照 《东北林业大学学报》 CAS CSCD 北大核心 1991年第1期75-82,共8页
小兴安岭枫桦红松林凋落物分解真菌生态群共签定出99属种,其中树上活体分解寄生菌10种、兼性菌5种,微型腐生菌36个属、腐生担子菌47种。根据凋落物分解真菌在分解过程中所处的生态位不同,分为四个生态群:叶面寄生分解真菌(以Melampsora,... 小兴安岭枫桦红松林凋落物分解真菌生态群共签定出99属种,其中树上活体分解寄生菌10种、兼性菌5种,微型腐生菌36个属、腐生担子菌47种。根据凋落物分解真菌在分解过程中所处的生态位不同,分为四个生态群:叶面寄生分解真菌(以Melampsora, Uncinula等为代表)、叶面兼性分解真菌(以Mycosphaerella,Lophodermium为代表)、叶栖初生腐生分解真菌(以Lophodermium nitens为典型代表)、叶栖习居次生腐生分解真菌(微型真菌以Alternaria,Trichoderme等为代表,腐生担子菌以Clitocybe,Russula等为代表)。在凋落物分解真菌方面,为枫桦红松林生态系统研究,提供了重要科学资料。 展开更多
关键词 枫桦红松林 凋落物 真菌生态
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几种主要分子生物学技术在真菌生态学研究中的应用 被引量:8
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作者 李娟 《菌物研究》 CAS 2005年第1期58-62,共5页
真菌在自然界的物质循环与降解等生态过程中发挥着重要的作用,是生态系统的重要组成部分。然而约90%的真菌种类仍然未知,且大部分难于分离和培养。因此核酸杂交;核酸序列分析;DNA指纹分析等分子生物学技术被用于真菌分类、鉴定、种群结... 真菌在自然界的物质循环与降解等生态过程中发挥着重要的作用,是生态系统的重要组成部分。然而约90%的真菌种类仍然未知,且大部分难于分离和培养。因此核酸杂交;核酸序列分析;DNA指纹分析等分子生物学技术被用于真菌分类、鉴定、种群结构、群落多样性研究。本文综述了这几种主要分子生物学技术的基本原理及其在真菌生态学研究中的应用现状。 展开更多
关键词 真菌生态 分子生物学技术 DNA指纹分析 应用
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台湾大型真菌长期生态之研究
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作者 陈升明 何一正 +1 位作者 徐希世 陈复琴 《新疆大学学报(自然科学版)》 CAS 2004年第z1期27-,共1页
作者在台湾中部关刀溪长期生态研究站从事大型担子菌多样性与分布之调查研究,并且将研究站之地理环境、植物族群和生态特性予以描述记录.为了研究上的需要,我们在生态研究站中设置了八个实验样区专供大型真菌生态调查研究用.实验样区经... 作者在台湾中部关刀溪长期生态研究站从事大型担子菌多样性与分布之调查研究,并且将研究站之地理环境、植物族群和生态特性予以描述记录.为了研究上的需要,我们在生态研究站中设置了八个实验样区专供大型真菌生态调查研究用.实验样区经过全面调查之后发现优势植物族群为野牡丹科、樟科、里百科、山龙眼科、桃金娘科和胡桃科等.实验样区中主要的大型真菌有小菇属、小皮伞属、趋木菌属、栓菌属、红菇属、革盖菌属、乳菇属、鹅膏属和韧革菌属等.大多数大型真菌的子实体在七月间出现,只有少量子实体在三月间发现.小菇属和小皮伞属是最常见的大型真菌,不论在夏季和冬季都可发现它们的子实体.在夏季出现子实体的真菌有红菇、革盖菌、乳菇、鹅膏、蜜环菌、拟层孔菌、灵芝、小孔菌和赤褶菇等;然而,在冬季出现子实体的真菌则是趋木菌、栓菌、韧革菌和笋毡菌等.实验样区中大型真菌的分布显示富有变化,子实体出现频率与真菌之多样性和伴生植物植群具有相关性.真菌子实体出现多的样区主要的伴生植物有柏拉木、香桂、倒卵叶山龙眼、小叶赤楠、台湾黄杞、菝契、杉木、肾蕨和倒叶瘤足蕨.然而,真菌子实体出现少的样区常见的伴生植物为红花八角和中华里.依据研究结果推论森林生态系中植物族群是影响真菌族群的建立与分布的主要因子之一. 展开更多
关键词 大型真菌 担子菌 真菌多样性 真菌生态 台湾长期生态
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植物真菌性根病及其生态防治 被引量:5
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作者 赵光材 《热带农业科技》 2003年第4期27-30,共4页
根据土壤中植物病原真菌的生物学习性,提出了植物根部病害的生态防治方法。
关键词 生态防治:根部病原真菌 生物学习性 土壤环境 根系适应性
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皮肤真菌微生态研究进展 被引量:5
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作者 王若珺 李若瑜 《中国真菌学杂志》 CSCD 2018年第3期188-192,共5页
随着近年来分子学技术的发展,高通量测序和宏基因组学技术为研究人体皮肤微生态提供了可能。皮肤微生态的变化与银屑病、特应性皮炎、痤疮和慢性伤口等多种炎症性和感染性疾病的发生和发展相关。真菌成分在皮肤中含量远低于细菌,但会影... 随着近年来分子学技术的发展,高通量测序和宏基因组学技术为研究人体皮肤微生态提供了可能。皮肤微生态的变化与银屑病、特应性皮炎、痤疮和慢性伤口等多种炎症性和感染性疾病的发生和发展相关。真菌成分在皮肤中含量远低于细菌,但会影响很多皮肤疾病和机会性感染的发生,因而皮肤微生态中真菌的构成开始逐渐引起人们重视。本文将就近年皮肤真菌微生态研究方法学以及其与皮肤疾病的关系的研究进展进行综述。 展开更多
关键词 皮肤 真菌生态 皮肤疾病 高通量测序
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土壤真菌在森林生态系统功能调控中的作用与意义 被引量:7
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作者 陈泽鑫 曹帅婷 《科学技术创新》 2020年第12期155-157,共3页
土壤微生物是土壤中看不见的大多数,它们构成了生命遗传多样性的很大一部分。土壤真菌作为森林生态系统的重要组成部分,驱动主要的生物地球化学过程,并有助于维持地球上的植物生产力和物种丰富度,而在森林生态系统功能调控中扮演着重要... 土壤微生物是土壤中看不见的大多数,它们构成了生命遗传多样性的很大一部分。土壤真菌作为森林生态系统的重要组成部分,驱动主要的生物地球化学过程,并有助于维持地球上的植物生产力和物种丰富度,而在森林生态系统功能调控中扮演着重要角色。 展开更多
关键词 森林生态系统:土壤真菌 凋落物
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湖泊生态系统中的真菌及其作用研究进展
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作者 薛曌 王兰 +1 位作者 耿啸岩 郭小芳 《南方农业》 2023年第19期70-75,共6页
真菌是生态系统中的主要分解者,在生态系统的物质和能量循环中扮演着重要角色。目前关于真菌多样性的研究都来自陆地环境,而水生环境的真菌多样性却未得到充分开发。湖泊真菌十分丰富,总结国内外对于湖泊中真菌的研究现状,介绍在湖滨带... 真菌是生态系统中的主要分解者,在生态系统的物质和能量循环中扮演着重要角色。目前关于真菌多样性的研究都来自陆地环境,而水生环境的真菌多样性却未得到充分开发。湖泊真菌十分丰富,总结国内外对于湖泊中真菌的研究现状,介绍在湖滨带、浅水区、深水层和沉积物中的真菌分布,分析湖泊中真菌与病毒、细菌、原生动物及真菌之间的相互作用和真菌在湖泊生态系统中的作用(水生植物残体的分解、有机质处理的时空过程),提出湖泊真菌研究与应用前景展望。 展开更多
关键词 湖泊 生态系统真菌 相互作用
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土壤环境因素对水稻纹枯病菌腐生定殖能力的影响 被引量:18
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作者 周而勋 杨媚 陈友林 《植物病理学报》 CAS CSCD 北大核心 2002年第3期214-218,共5页
研究了土壤含菌量、温度、含水量和 p H值对水稻纹枯病菌在土壤中腐生定殖能力的影响。研究结果表明 :土壤含菌量越大 ,腐生后的定殖率越高 ,但未达到腐生处理前的水平 ;随着腐生温度的升高 ,定殖率逐渐下降 ,当腐生温度达到 4 0℃时 ,... 研究了土壤含菌量、温度、含水量和 p H值对水稻纹枯病菌在土壤中腐生定殖能力的影响。研究结果表明 :土壤含菌量越大 ,腐生后的定殖率越高 ,但未达到腐生处理前的水平 ;随着腐生温度的升高 ,定殖率逐渐下降 ,当腐生温度达到 4 0℃时 ,定殖率迅速下降到 8.0 % ;土壤含水量在 15 %时腐生能力最强、定殖率最高 ,达到 84 .0 % ,而在土壤含水量较大或较小时腐生定殖能力都不高 ;另外 ,该病菌喜好酸性的土壤环境 ,在 p H6 .0时腐生能力最强、定殖率最高 ,达到 85 .3%。 展开更多
关键词 真菌生态 土壤 环境因素 水稻 纹枯病菌 腐生定殖能力
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Effects of Acetochlor and Methamidophos on Fungal Communities in Black Soils 被引量:2
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作者 LI Xin-Yu ZHANG Hui-Wen +2 位作者 ZHOU Qi-Xing SU Zhen-Cheng ZHANG Cheng-Gang 《Pedosphere》 SCIE CAS CSCD 2005年第5期646-652,共7页
Using plate counting and ergosterol assay, single and joint effects of acetochlor and methamidophos on the dynamicsof soil fungal population and total fungal biomass in the black soil zone of Northeast China were inve... Using plate counting and ergosterol assay, single and joint effects of acetochlor and methamidophos on the dynamicsof soil fungal population and total fungal biomass in the black soil zone of Northeast China were investigated. The resultsdemonstrated that acetochlor at high concentration levels (150 and 250 mg kg-1) had an acute and mostly chronic toxicityon both the soil fungal population and total fungal biomass, but at a low concentration (50 mg kg-1) generally had astimulating effect that was stronger with total fungal biomass than with the soil fungal population. Methamidophos ata high concentration level (250 mg kg-1) alone and almost all of its combinations with various dosages of acetochlorincreased the soil fungal population, whereas at most sampling dates with 250 mg methamidophos kg-1 soil, total fungalbiomass increased, but in combination with acetochlor it was decreased in the early period of incubation and then increased28 days after incubation. Thus, through measuring the number of colony forming unit of the soil fungal population alongwith the total fungal biomass, a better understanding on effects of agrochemicals on soil fungi could be made. 展开更多
关键词 ACETOCHLOR black soil fungal biomass fungal population methamidophos
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Brief Introduction to a Unique Edible Bolete---Phlebopus portentosus in Southern China 被引量:8
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作者 Chunxia Zhang Mingxia He +6 位作者 Jing Liu Xinjing Xu Yang Cao Feng Gao Yiwei Fang Wenbing Wang Yun Wang 《Journal of Agricultural Science and Technology(B)》 2017年第6期386-394,共9页
Abstraet: Phlebopus portentosus (Berk. and Broome) Boedijn is a favored wild edible mushroom in the Xishuangbanna region, Yunnan, China and Northern Thailand. It belongs to Boletinellaceae family and is known as "... Abstraet: Phlebopus portentosus (Berk. and Broome) Boedijn is a favored wild edible mushroom in the Xishuangbanna region, Yunnan, China and Northern Thailand. It belongs to Boletinellaceae family and is known as "black bolete". Its ecological habits and biotrophy are very complicated. It can be saprobic and successfully cultivated in mushroom house conditions. More often it grows closely with many plants, but is not mycorrhizal fungus. It forms a tripartite association with root mealy bugs and plants. The fungus produces special fungus-insect gall with the soil mealy bugs, which is a symbiotic association between these two creatures. The gall grows on plant roots with parasitic tendency. This paper is a compact report of the findings, including taxonomy, ecology, economic and cultivation of this mushroom. 展开更多
关键词 Phlebopusportentosus ECOLOGY CULTIVATION fungus-insect gall biotrophy economy China.
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关于布拉氏酵母菌预防及治疗小儿急性腹泻病的相关临床研究 被引量:4
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作者 王卫红 《解放军预防医学杂志》 CAS 2016年第S2期302-302,共1页
目的关于对布拉氏酵母菌散剂预防及治疗小儿急性腹泻病的临床疗效。方法以我院2012年6月至9月收治的108例小儿急性腹泻病患儿为研究对象,随机分成两组各54例。两组均予补液、蒙脱石散剂口服治疗,治疗组加服布拉氏酵母菌散剂连续治疗。... 目的关于对布拉氏酵母菌散剂预防及治疗小儿急性腹泻病的临床疗效。方法以我院2012年6月至9月收治的108例小儿急性腹泻病患儿为研究对象,随机分成两组各54例。两组均予补液、蒙脱石散剂口服治疗,治疗组加服布拉氏酵母菌散剂连续治疗。对照组给予抗生素连续治疗至出院,对108例患儿资料进行数据分析。结果两组总有效率比较差异有统计学意义(χ~2=4.84,P<0.05)。腹泻平均持续时间对照组为(6.54±1.74)d,治疗组为(5.72±1.67)d(t=2.30,P<0.05),两组比较差异有统计学意义;服药第4d治疗组日平均大便次数(3.13±0.95)次,对照组(3.74±0.91)次(t=3.14,P<0.01),服药第7d治疗组日平均大便次数(1.74±0.93)次,对照组(2.24±0.95)次(t=2.55,P<0.05),两组比较差异均有统计学意义;治疗组按给药治疗时机进行分层分析,比较第4d和第7d大便次数(t分别为3.90、3.71,P均<0.01),差异有统计学意义。结论严格控制广谱抗生素的使用和补充微生态制剂布拉氏酵母菌可缩短小儿急性腹泻的持续时间,促进患儿恢复,,患儿在腹泻发生2天内早期给予布拉氏酵母菌预防及治疗效果更佳。 展开更多
关键词 真菌类微生态制剂 维护肠道菌群的生态平衡 预防治疗 腹泻病
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Biocidal Effect of Gamma Radiation on the Ecology of Filamentous Fungal Populations Associated with Stone Deterioration
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作者 Douglas Boniek Isolda de Castro Mendes +1 位作者 Antonio Femando Batista dos Santos Maria Aparecida de Resende Stoianoff 《Journal of Environmental Science and Engineering(A)》 2017年第5期252-259,共8页
This study focused on the identification of the filamentous fungi associated with soapstone samples exposed to outdoor conditions and the biocidal effect of gamma radiations on isolated fungal populations in Minas Ger... This study focused on the identification of the filamentous fungi associated with soapstone samples exposed to outdoor conditions and the biocidal effect of gamma radiations on isolated fungal populations in Minas Gerais State in Brazil. Two soapstone blocks were placed outdoors under tropical environmental conditions for 12 months. A total of 9 filamentous fungal populations were identified on their surfaces, namely Acremomium (cf.) alternatum, Alternaria alternata, Aspergillusfumigatus, Calcarisporium (cf.) arbuscula, Cladosporium cladosporioides, Curvularia lunata, Epicoccum nigrum, Fusarium equiseti and Penicillium citrinum. The gamma radiation assay was then carried out as a test of biocidal action by exposing all fungal populations to the ionizing radiation. The results showed that only the C. cladosporioides species was resistant to this biocidal agent, since it was able to increase its population post exposure. Scanning electron microscopy images identified the microbial colonization on the soapstone blocks and the stone elementar composition was analyzed by energy dispersive X-ray spectrometry. After treatment, there was no structural and aesthetic alteration in the soapstone samples, and evidencing that gamma radiation can be used as a biocidal agent. However, the resistance of the black fungal population indicates caution in the choice of gamma irradiation as biocidal treatment. 展开更多
关键词 Gamma radiation biocidal STONE ECOLOGY filamentous fungi.
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Ecological Sound Control Strategies for Population Suppression of Date Palm Borers Oryctes spp.
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作者 Mohammed Zaidan Khalaf Hussain Fadhel Alrubeai +1 位作者 Mohammed Waleed Khudhaer Aysar Abdulkarem Abdulhusein 《Journal of Agricultural Science and Technology(A)》 2017年第1期18-24,共7页
Cultural practices, hand collection of larvae, light traps and entomopathogenic fungi were investigated to manage of palm borers Oryctes spp. in date palm orchards during the years 2010-2015. Cultural practices, such ... Cultural practices, hand collection of larvae, light traps and entomopathogenic fungi were investigated to manage of palm borers Oryctes spp. in date palm orchards during the years 2010-2015. Cultural practices, such as sanitation and pruning frond bases, hand collection of larvae during regular annual service work and light traps with solar energy were practiced annually in one orchard for five years. In the second orchard, cultural practices were applied for two years, light trap for one year only, and no hand collection of larvae was done during the period. The third orchard was used as a control treatment. Results showed reduction in population density of larvae (91.6% and 53.0%) and adult (76.1% and 41.1%) ofOryects spp. in the 1st and 2nd orchard, respectively The results also demonstrated the impact of moon light phases on the number of Oryctes spp. adults caught by light trap and the existence of an inverse relation between moon light and flight activity of adults. Biological experiments also revealed that entomopathogenic fungi can cause high mortality rate reaching 100% after 29 d. Beauveria bassiana scored higher mortality rate in short time, especially at concentration of 1 × 10^11 conidia/mL with LT50 = 12.75 and LT90 = 20; while, Metarhizium anisopliae caused the higher percentage of malformed adults. The results depicted the effectiveness of some integrated ecological sound control methods for monitoring and population suppression of Oryects spp. in date palm orchards. 展开更多
关键词 Integrated pest management cultural practices hand collection of larvae light traps moon light entomopathogenic fungi Oryects spp..
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昆明动物园不同动物粪便真菌多样性(英文)
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作者 李艳琼 崔照琼 胡殿明 《菌物研究》 CAS 2014年第2期88-95,共8页
为调查不同动物粪便中真菌的多样性及不同真菌对动物粪便的偏好性,在云南昆明动物园采集了大额牛、羚牛、梅花鹿、角马、黇鹿、斑马、麋鹿、亚洲野驴、长颈鹿、野牦牛10种动物的粪便共100份。此次调查共鉴定出真菌57种,包括子囊菌31种,... 为调查不同动物粪便中真菌的多样性及不同真菌对动物粪便的偏好性,在云南昆明动物园采集了大额牛、羚牛、梅花鹿、角马、黇鹿、斑马、麋鹿、亚洲野驴、长颈鹿、野牦牛10种动物的粪便共100份。此次调查共鉴定出真菌57种,包括子囊菌31种,担子菌7种,接合菌13种,分类地位未定种类6种。其中,最常见的属为柄孢壳菌属Podospora Ces.,其次是鬼伞属Coprinus Pers及毛霉属Mucor P.Micheli ex Fr。最常见的种类为Mucor sp1,其次是Saccobolus saccoboloides Brumm和Doratomyces stemonitis(Pers.)F.J.Morton&G.Sm.。在报道的57种真菌中,有9种为中国新记录种,即Ascobolus aglaosporus Heimerl,A.behnitziensis Kirschst.,Ascodesmis sphaerospora Obrist,Coprinus hetemerus Lange&Smith,C.radiatus(Bolt.Ex Fr.)S.F.Gray,Podospora comata Milovtz.,Saccobolus dilutellus(Fuckel)Sacc.,S.saccoboloides Brumm.,Spornormiella minima(Auersw.)Ahmed&Cain.。分别研究了这10种动物粪便的真菌物种丰度及多样性,结果显示,反刍类动物粪便的真菌多样性高于非反刍类动物粪便真菌多样性。 展开更多
关键词 子囊菌 担子菌 真菌生态 草食动物粪便
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Population turnover promotes fungal stability in a semi-arid grassland under precipitation shifts 被引量:1
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作者 Nannan Wang Lei Li +8 位作者 Bingwei Zhang Shiping Chen Wei Sun Yukun Luo Kuanhu Dong Xingguo Han Jianhui Huang Xiaofeng Xu Changhui Wang 《Journal of Plant Ecology》 SCIE CSCD 2020年第4期499-509,共11页
Aims Bacteria and fungi are two primary groups of soil microbes,and their stability determines the persistence of microbial functions in response to a changing environment.Recent studies reported higher fungal than ba... Aims Bacteria and fungi are two primary groups of soil microbes,and their stability determines the persistence of microbial functions in response to a changing environment.Recent studies reported higher fungal than bacterial stability under precipitation alteration,the underlying mechanisms,however,remain elusive.Methods A 3-year precipitation manipulation experiment in a semi-arid grassland was used to compare the bacterial and fungal diversities,including alpha diversity,beta diversity and microbial community composition turnover,in response to precipitation manipulations.A framework is proposed to understand the stability properties of bacteria and fungi under precipitation alteration.We conceived a diagrammatic valley to illustrate microbial stability with the depth representing resistance and the width ecological resilience.Important Findings We found that±60%in precipitation significantly reduced the richness and increased the evenness of bacteria but had trivial impacts on fungi.Precipitation alteration yielded stronger impacts on the variation in alpha diversity of bacteria than fungi,suggesting that the bacterial community is more sensitive to water stress than the fungal community.Moreover,fungi had wider composition turnover than that of bacteria,indicating higher composition variation of fungi than bacteria.The population turnover of fungi,reflected by composition variation,coefficient variation of diversity index and composition turnover,was larger than that of bacteria at both temporal and spatial scales,indicating the population turnover promotes fungal stability.The higher stability of fungal community in tolerating water stress is analogous to a ball in a wide valley that swing substantially but remain close to its steady state;while the lower stability of bacteria community is analogous to a ball that swings slightly but stay far away from its steady state.Our finding that the fungal community had higher stability than bacterial community in a semi-arid grassland might be applicable to other biomes. 展开更多
关键词 BACTERIA diversity FUNGI resistance ecological resilience
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Arbuscular Mycorrhizal Fungi in Wetland Habitats and Their Application in Constructed Wetland: A Review 被引量:12
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作者 XU Zhouying BAN Yihui +2 位作者 JIANG Yinghe ZHANG Xiangling LIU Xiaoying 《Pedosphere》 SCIE CAS CSCD 2016年第5期592-617,共26页
Over the last three decades, the presence and functional roles of arbuscular mycorrhizal (AM) fungi in wetland habitats have received increasing attention. This review summarized the mycorrhizal status in wetlands a... Over the last three decades, the presence and functional roles of arbuscular mycorrhizal (AM) fungi in wetland habitats have received increasing attention. This review summarized the mycorrhizal status in wetlands and the effect of flooding on AM fungal colonization. Plants of 99 families living in 31 different habitats have been found to be associated with AM fungi, even including submerged aquatic plants and several plant species that were thought to be nonmycorrhizal (Cyperaceae, Chenopodiaceae, and Plumbaginaceac). The functions of AM fungi in wetland ecological systems could be concluded as their influences on the composition, succession, and diversity of the wetland plant community, and the growth and nutrition of wetland plants. Affecting the composition, succession, and diversity of the wetland plant community, AM fungi have positive, negative, or neutral effects on the performance of different wetland species under different conditions. The factors that affect the application effect of AM fungi in constructed wetland (CW) include flooding, phosphorus, plant species, aerenchyma, salinity, CW types, operation modes of CW, and wastewater quality. The generalist AM fungi strains can be established spontaneously, rapidly, and extensively in wastewater bioremediation technical installations; therefore, AM fungi can be considered ideal inhabitants of technical installations for the plant-based bioremediation of groundwater contaminated by organic pollutants or other contaminants. In the future, roles of AM fungi and factors that affect the purifying capacity of AM-CW system must be understood to optimize CW ecosystem. 展开更多
关键词 BIOREMEDIATION FLOODING fungal colonization mycorrhizal status plant community WASTEWATER
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Soil pH determines fungal diversity along an elevation gradient in Southwestern China 被引量:30
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作者 Dan Liu Guohua Liu +2 位作者 Li Chen Juntao Wang Limei Zhang 《Science China(Life Sciences)》 SCIE CAS CSCD 2018年第6期718-726,共9页
Fungi play important roles in ecosystem processes, and the elevational pattern of fungal diversity is still unclear. Here, we examined the diversity of fungi along a 1,000 m elevation gradient on Mount Nadu, Southwest... Fungi play important roles in ecosystem processes, and the elevational pattern of fungal diversity is still unclear. Here, we examined the diversity of fungi along a 1,000 m elevation gradient on Mount Nadu, Southwestern China. We used MiSeq sequencing to obtain fungal sequences that were clustered into operational taxonomic units(OTUs) and to measure the fungal composition and diversity. Though the species richness and phylogenetic diversity of the fungal community did not exhibit significant trends with increasing altitude, they were significantly lower at mid-altitudinal sites than at the base. The Bray-Curtis distance clustering also showed that the fungal communities varied significantly with altitude. A distance-based linear model multivariate analysis(DistLM) identified that soil pH dominated the explanatory power of the species richness(23.72%),phylogenetic diversity(24.25%) and beta diversity(28.10%) of the fungal community. Moreover, the species richness and phylogenetic diversity of the fungal community increased linearly with increasing soil pH(P<0.05). Our study provides evidence that pH is an important predictor of soil fungal diversity along elevation gradients in Southwestern China. 展开更多
关键词 fungi diversity elevation soil pH
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Functional response of the fungus Hirsutella rhossiliensis to the nematode, Heterodera glycines 被引量:1
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作者 SHU Chi LAI YiLing +3 位作者 YANG EnCe CHEN SenYu XIANG MeiChun LIU XingZhong 《Science China(Life Sciences)》 SCIE CAS CSCD 2015年第7期704-712,共9页
Functional response is a key index in determining the population fluctuation in predation. However, the lack of operable research system limits the studies on functional response of fungal predators. Hirsutella rhossi... Functional response is a key index in determining the population fluctuation in predation. However, the lack of operable research system limits the studies on functional response of fungal predators. Hirsutella rhossiliensis is a dominant parasite of the soybean cyst nematode, Heterodera glycines. In a soil microcosm bioassay, we determined fungal biomass at different days within 21 days after inoculation, and parasitism rate of H. glycines by the fungus was determined. The functional response of H. rhossiliensis to H. glycines was established and found to be Holling's type Ill, which was influenced by mycelial densities. Meanwhile, we conducted anti-fungal analysis of metabolic fractions extracted from H. rhossiliensis to explain the potential mechanism of the intraspecific competition illustrated by functional response. The result of anti-fungal experiments indicated that the fungal predators had more complicated interaction at population level than expected, which might be regulated by self-inhibition metabolite(s). This study was the first functional response study of fungal predators in microcosm. With the in- creasing recognition of emerging fungal threats to animal, plant, and ecosystem health, the methodologies and hypotheses proposed in this study might inspire further research in fungal ecology. 展开更多
关键词 fungal predator predation index self-inhibition composition soybean cyst nematode
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