abstract：:Fungal community structure and diversity in two types of agricultural grassland soil were investigated by amplified 18S ribosomal DNA restriction analysis (ARDRA) and 18S ribosomal DNA sequence analysis. These two grassland sites represent a species-rich old hay meadow and an agriculturally improved site with low flor...

journal_title：Microbial ecology

authors： Hunt J,Boddy L,Randerson PF,Rogers HJ

更新日期：2004-05-01 00:00:00

abstract：:The community structure of methanogenic Archaea on anoxically incubated rice roots was investigated by amplification, sequencing, and phylogenetic analysis of 16S rRNA and methyl-coenzyme M reductase (mcrA) genes. Both genes demonstrated the presence of Methanomicrobiaceae, Methanobacteriaceae, Methanosarcinaceae, Met...

journal_title：Microbial ecology

authors： Chin KJ,Lueders T,Friedrich MW,Klose M,Conrad R

更新日期：2004-01-01 00:00:00

abstract：:Different experiments have estimated that the contribution of biological nitrogen fixation (BNF) is largely variable among sugarcane cultivars. Which bacteria are the most important in sugarcane-associated BNF is unknown. However, Gluconacetobacter diazotrophicus has been suggested as a strong candidate responsible fo...

journal_title：Microbial ecology

authors： Muñoz-Rojas J,Caballero-Mellado J

更新日期：2003-11-01 00:00:00

abstract：:Bulbous rush (Juncus bulbosus) is a pioneer species in acidic, iron-rich, coal mining lakes in the eastern part of Germany. Juncus roots are coated with iron plaques, and it has been suggested that microbial processes under the iron plaques might be supportive for Juncus plant growth. The objectives of this work were ...

journal_title：Microbial ecology

authors： Küsel K,Chabbi A,Trinkwalter T

更新日期：2003-10-01 00:00:00

abstract：:The abundance, distribution, and phylogenetic diversity of members of the Fe(III)-reducing family Geobacteraceae were studied along a gradient of metal contaminants in Lake Coeur d'Alene, Idaho. Partial 16S rRNA gene fragments were amplified by PCR using primers directed toward conserved regions of the gene within the...

journal_title：Microbial ecology

authors： Cummings DE,Snoeyenbos-West OL,Newby DT,Niggemyer AM,Lovley DR,Achenbach LA,Rosenzweig RF

更新日期：2003-08-01 00:00:00

abstract：:Dilute soda lakes are among the world's most productive environments and are usually dominated by dense blooms of cyanobacteria. Up to now, there has been little information available on heterotrophic bacterial abundance, production, and their controlling factors in these ecosystems. In the present study the main envi...

journal_title：Microbial ecology

authors： Eiler A,Farnleitner AH,Zechmeister TC,Herzig A,Hurban C,Wesner W,Krachler R,Velimirov B,Kirschner AK

更新日期：2003-07-01 00:00:00

abstract：:Bacteria and algae release exopolymeric substances (EPS) that perform a wide range of important functions in aquatic and terrestrial systems. In this study we measured EPS in sediments at nine littoral sites around a shallow oligotrophic basin, and tested whether the concentration and composition of EPS was related to...

journal_title：Microbial ecology

authors： Hirst CN,Cyr H,Jordan IA

更新日期：2003-07-01 00:00:00

abstract：:Sixty-two bacteriophages were isolated on eight indigenous bacteria from a Pacific Ocean station spanning 887-m vertical depth, on two occasions between 1999 and 2000. On the basis of 16S rRNA sequences, six hosts were tentatively identified to be in the genus Vibrio and the other two were closely related to Altermona...

journal_title：Microbial ecology

authors： Jiang S,Fu W,Chu W,Fuhrman JA

更新日期：2003-05-01 00:00:00

abstract：:Biotic and abiotic factors can influence interactions between microbial grazers and their prey, thus impacting both the cycling of biogenic carbon within the surface layer of the ocean and the export of carbon to the deep ocean and higher trophic levels. In this study, microcosm experiments were used to evaluate the c...

journal_title：Microbial ecology

authors： Delaney MP

更新日期：2003-03-01 00:00:00

abstract：:The aim of the study was to assess the effect of the mycorrhizosphere of A. tortillis spp. raddiana mycorrhized with Glomus intraradices on the root nodulation by Sinorhizobium terangae (ORS 1009) and/or Mesorhizobium plurifarium (ORS 1096) in two different culture substrates (sandy soil and sand). The endomycorrhizal...

journal_title：Microbial ecology

authors： André S,Neyra M,Duponnois R

更新日期：2003-02-01 00:00:00

abstract：:Rhizoremediation has been suggested as an attractive bioremediation strategy for the effective breakdown of pollutants in soil. The presence of plant root exudates such as organic acids, sugars, and amino acids that may serve as carbon sources or biosynthetic building blocks and the limited bioavailability of iron may...

journal_title：Microbial ecology

authors： Dinkla IJ,Janssen DB

更新日期：2003-01-01 00:00:00

abstract：:Maize root colonization and phosphate solubilizing activity of the fungus Penicillium rugulosum were assessed in a greenhouse trial using soil-plant microcosms. The bacterial gene hph conferring resistance to hygromicin B was introduced by electroporation in the wild-type strain IR-94MF1 of P. rugulosum and one transf...

journal_title：Microbial ecology

authors： Reyes I,Bernier L,Antoun H

更新日期：2002-07-01 00:00:00

abstract：:Bacterioplankton community composition was studied in 12 lakes in three different geographic regions in Scandinavia using denaturing gradient gel electrophoresis (DGGE) and sequencing of 16S rDNA. Area-specific abundant taxa were found in the lakes in two of the regions. In the region of Uppland the lakes had an alpha...

journal_title：Microbial ecology

authors： Lindström ES,Leskinen E

更新日期：2002-07-01 00:00:00

abstract：:Experiments were done to test the hypothesis that atmospheric CH(4) oxidizers in a well-drained alpine tundra soil are supported by CH(4) production from anaerobic microsites in the soil. Soil was subjected to 22 days of anaerobic conditions with elevated H(2) and CO(2) in order to stimulate methanogenesis. This treat...

journal_title：Microbial ecology

authors： West AE,Schimdt SK

更新日期：2002-05-01 00:00:00

abstract：:The abundance and biomass of heterotrophic flagellates were estimated monthly in sediments of Botany Bay during March 1999-February 2000. The annual abundance and biomass were in the ranges of 0.46-4.70 x 10(5) cells/cm(3) and of 0.30-8.61 micro g C/cm(3), respectively. The majority of heterotrophic flagellates (93-10...

journal_title：Microbial ecology

authors： Lee WJ,Patterson DJ

更新日期：2002-05-01 00:00:00

abstract：:Heterotrophic bacteria in sea ice play a key role in carbon cycling, but little is known about the predominant players at the phylogenetic level. In a study of both algal bands and clear ice habitats within summertime Arctic pack ice from the Chukchi Sea, we determined the abundance of total bacteria and actively resp...

journal_title：Microbial ecology

authors： Junge K,Imhoff F,Staley T,Deming JW

更新日期：2002-04-01 00:00:00

abstract：:Generally, only a small fraction of free-living pelagic bacteria are metabolically active, while particle-associated bacteria usually exhibit a larger proportion of active bacteria. Most previous studies on the active fraction of bacteria focus on planktonic communities, and there are only a few studies on sediment an...

journal_title：Microbial ecology

authors： Haglund AL,Törnblom E,Boström B,Tranvik L

更新日期：2002-03-01 00:00:00

abstract：:Phytoplankton dynamics, bacterial standing stocks and living microbial biomass (derived from ATP measurements, 0.7-200 mm size class) were examined in 1996 in the newly flooded (1995) Sep Reservoir ('Massif Central,' France), for evidence of the importance of the microbial food web relative to the traditional food cha...

journal_title：Microbial ecology

authors： Tadonléké RD,Jugnia LB,Sime-Ngando T,Devaux J,Romagoux JC

更新日期：2002-01-01 00:00:00

abstract：:Lasallia hispanica, Parmelia omphalodes, and Cornicularia normoerica, saxicolous thalli growing on granite, show a close relationship with other lichens and microorganisms living in the lithic substrate beneath them. The lithobiontic community is an accumulation of microorganisms at an interface forming a biofilm, whi...

journal_title：Microbial ecology

authors： de los Ríos A,Wierzchos J,Ascaso C

更新日期：2002-01-01 00:00:00

abstract：:Biofilm-produced and commercially-purified a- and b-glucosidase and alkaline phosphatase were subjected to different spectral portions of natural and artificial light and exposed to various humic substances to elucidate their impact on enzyme activities. Photochemical degradation of all enzymes occurred under differen...

journal_title：Microbial ecology

authors： Espeland EM,Wetzel RG

更新日期：2001-12-01 00:00:00

abstract：:The phospholipid fatty acid (PLFA) profiles of soil microbial communities were determined in relation to the patterns of tree cover in a mature Norway spruce plantation. Replicate samples of the surface organic layers were taken close to the trunk, at 1 m and at 2 m (under the edge of the canopy) beneath five trees. S...

journal_title：Microbial ecology

authors： Wilkinson SC,Anderson JM

更新日期：2001-10-01 00:00:00

abstract：:Sediment samples were collected monthly from Acton Lake, a eutrophic reservoir located in an agricultural region of southwestern Ohio, from three stations (River, Middle, and Dam) during the period May 1995 through January 1997. Sedimentary microbial biomass and community structures from these stations were studied us...

journal_title：Microbial ecology

authors： Smoot JC,Findlay RH

更新日期：2001-10-01 00:00:00

abstract：:Conjugal transfer of a derivative of the RP4 plasmid between Pseudomonas fluorescens AS12 and Serratia plymuthica RF7 was compared in the rhizosphere of pea, wheat, and barley and related to the metabolic activity of the bacteria. To obtain a reliable measure of transfer, which allowed comparison of results between ex...

journal_title：Microbial ecology

authors： Schwaner NE,Kroer N

更新日期：2001-10-01 00:00:00

abstract：:The small-scale distribution of several structural (bacterial abundance, phytopigment, total and soluble protein, and carbohydrate content) and functional ecological variables (enzymatic activities, frequency of dividing cells) was investigated in coastal sediments during a spring bloom. For bacterial abundance, enzym...

journal_title：Microbial ecology

authors： Danovaro R,Armeni M,Dell'Anno A,Fabiano M,Manini E,Marrale D,Pusceddu A,Vanucci S

更新日期：2001-08-01 00:00:00

abstract：:The impact of the oxygen supply rate (OSR) on the metabolic activity and on the composition of hexadecane-degrading bacterial communities in a quasi-anoxic milieu (nominal DOT = 0%) was studied in continuous cultures containing intertidal sediment. The dilution rate was kept constant at 0.035 h-1. The OSR was stepwise...

journal_title：Microbial ecology

authors： Berthe-Corti L,Bruns A

更新日期：2001-07-01 00:00:00

abstract：:Persistence of recombinant and wild-type nucleopolyhedroviruses (NPV) was compared in field and laboratory microcosm experiments. Horizontal and vertical distribution of the viruses also was monitored in the field agricultural soil. Mixed populations of the bollworm, Helicoverpa zea, and tobacco budworm, Heliothis vir...

journal_title：Microbial ecology

authors： Fuxa JR,Matter MM,Abdel-Rahman A,Micinski S,Richter AR,Flexner JL

更新日期：2001-04-01 00:00:00

abstract：:We have generated new sensors for the specific detection and studies of bioavailability of metals by engineering Pseudomonas fluorescens with reporter gene systems. One broad host range mercury (pTPT11) and two arsenite (pTPT21 and pTPT31) sensor plasmids that express metal presence by luminescence phenotype were cons...

journal_title：Microbial ecology

authors： Petänen T,Virta M,Karp M,Romantschuk M

更新日期：2001-02-01 00:00:00

abstract：:At Iron Mountain, CA, there is an extreme occurrence of acid mine drainage (AMD). This is a result of past mining activity that has exposed a sulfide ore body to weathering and microbial activity. This study presents seven new oligonucleotide probes for the detection of microorganisms at this AMD site by fluorescent i...

journal_title：Microbial ecology

authors： Bond PL,Banfield JF

更新日期：2001-02-01 00:00:00

abstract：:The culturable haloarchaeal diversity in a crystallizer pond from a solar saltern has been analyzed and compared with the biodiversity directly retrieved by analysis of rRNA genes amplified from the environment. Two different sets of culture conditions have been assayed: solid medium with yeast extract as carbon sourc...

journal_title：Microbial ecology

authors： Benlloch S,Acinas SG,Antón J,López-López A,Luz SP,Rodríguez-Valera F

更新日期：2001-01-01 00:00:00

abstract：:The spatial distribution of the bacterial biomass and production and of potential heterotrophic activity (PHA) were measured every 4 h between 23 July (10:00 h) and 25 July (10:00 h) 1997 in a recently flooded oligo-mesotrophic reservoir (the Sep Reservoir, Puy-de-Dôme, France), in relation to temperature, the phytopl...

journal_title：Microbial ecology

authors： Jugnia LB,Tadonléké RD,Sime-Ngando T,Devaux J

更新日期：2000-12-01 00:00:00

abstract：:The dynamics of a marine virus-host system were investigated at different steady state growth rates in chemostat cultures and the data were analyzed using a simple model. The virus-host interactions showed strong dependence on host cell growth rate. The duration of the infection cycle and the virus burst size were fou...

journal_title：Microbial ecology

authors： Middelboe M

更新日期：2000-08-01 00:00:00

abstract：:The microbial biomass and community structure of eight Chinese red soils with different fertility and land use history was investigated. Two community based microbiological measurements, namely, community level physiological profiling (CLPP) using Biolog sole C source utilization tests and phospholipid fatty acid (PLF...

journal_title：Microbial ecology

authors： Yao H,He Z,Wilson MJ,Campbell CD

更新日期：2000-08-01 00:00:00

abstract：:A BSTRACTInterspecific fungal interactions are important ecological processes, whereas their physiological mechanisms are little understood. The aim of this work was to study how activity of fungal extracellular laccase was changed across mycelia during interactions between white- and brown-rot basidiomycetes from dif...

journal_title：Microbial ecology

authors： Iakovlev A,Stenlid J

更新日期：2000-04-01 00:00:00

abstract：:The DNA sequence diversities for microbial communities in four soils affected by agricultural chemicals (mainly triadimefon and ammonium bicarbonate and their intermediates) were evaluated by Random Amplified Polymorphic DNA (RAPD) analysis. Fourteen random primers were used to amplify RAPDs from four soil microbial c...

journal_title：Microbial ecology

authors： Yang Y,Yao J,Hu S,Qi Y

更新日期：2000-01-01 00:00:00

abstract：:To investigate growth of heterotrophic biofilm bacteria, a model biofilm reactor was developed to simulate a drinking water distribution system. Controlled addition of three different carbon sources (amino acids, carbohydrates, and humics) at three different concentrations (500, 1,000, and 2,000 ppb carbon) in the pre...

journal_title：Microbial ecology

authors： Ellis BD,Butterfield P,Jones WL,McFeters GA,Camper AK

更新日期：1999-11-01 00:00:00

abstract：:Abstract Interactions between natural bacterial assemblages and dissolved organic carbon (DOC) were investigated in two complementary batch experiments. In the first, a positive relationship was found between the proportion of electron transport system (ETS) active bacteria and the diversity of DOC in microcosms enric...

journal_title：Microbial ecology

authors： Gayte X,Fontvieille D,Wilkinson KJ

更新日期：1999-10-01 00:00:00

abstract：:> Abstract A new procedure to investigate the relationship between bacterial cell size and activity at the cellular level has been developed; it is based on the coupling of radioactive labeling of bacterial cells and cell sorting by flow cytometry after SYTO 13 staining. Before sorting, bacterial cells were incubated ...

journal_title：Microbial ecology

authors： Servais P,Courties C,Lebaron P,Troussellier M

更新日期：1999-08-01 00:00:00

abstract：:> Abstract Claims that organisms can be cultured from amber, if substantiated, would be significant contributions to our understanding of the evolution, tenacity, and potential spread of life. Three reports on the isolation of organisms from amber have been published. Cano and Borucki recently reported the isolation o...

journal_title：Microbial ecology

authors： Greenblatt CL,Davis A,Clement BG,Kitts CL,Cox T,Cano RJ

更新日期：1999-07-01 00:00:00

abstract：:> Abstract To determine if spatial variation in soluble carbon sources along the root coincides with different trophic groups of bacteria, copiotrophic and oligotrophic bacteria were enumerated from bulk soil and rhizosphere samples at 2 cm intervals along wheat roots 2, 3, and 4 weeks after planting. There was a mode...

journal_title：Microbial ecology

authors： Semenov AM,van Bruggen AHC,Zelenev VV

更新日期：1999-02-01 00:00:00

abstract：:Abstract Lakes receive organic carbon from a diversity of sources which vary in their contribution to planktonic microbial food webs. We conducted a mesocosm study to test the effects of three different detrital carbon sources (algae, aquatic macrophytes, terrestrial leaves) on several measures of microbial metabolism...

journal_title：Microbial ecology

authors： Wehr JD,Petersen J,Findlay S

更新日期：1999-01-01 00:00:00