Gold(III) reduction by the rhizobacterium Azospirillum brasilense with the formation of gold nanoparticles.

Abstract:

:For the soil nitrogen-fixing bacterium Azospirillum brasilense, the ability to reduce [AuCl4](-) and to form gold nanoparticles (GNPs) has been demonstrated, with the appearance of a mauve tint of the culture. To validate the shapes and chemical nature of nanoparticles, transmission electron microscopy (TEM) and X-ray fluorescence analysis were used. For the widely studied agriculturally important wild-type strains A. brasilense Sp7 and Sp245, GNPs formed after 10 days of incubation of cell biomass with 0.25 mM [AuCl4](-) were shown (using TEM) to be mainly of spherical form (5 to 20 nm in diameter), with rare occasional triangles. In the course of cultivation with [AuCl4](-), after 5 days, a mauve tint was already visible for cells of strain Sp245.5, after 6 days for Sp245 and after 10 days for Sp7. Thus, for the mutant strain Sp245.5 (which has significant differences in the structure and composition of cell-surface polysaccharides as compared with Sp245), a more rapid formation of GNPs was observed. Moreover, their TEM images (also obtained after 10 days) showed different shapes: nano-sized spheres, triangles, hexagons and rods, as well as larger round-shaped flower-like nanoparticles about 100 nm in size. Since by the time of GNP formation in our experiments the cells were found to be already not viable, this confirms the dominating role of cell surface structure and chemical composition in shaping the GNPs formed in the course of [AuCl4](-) reduction to Au(0). This finding may be useful for understanding the natural biogeochemical mechanisms of gold reduction and formation of GNPs involving microorganisms. The data obtained may also help in developing protocols for environmentally friendly synthesis of nanoparticles and possible use of bacterial cells with modified surface structure and composition for their fabrication.

journal_name

Microb Ecol

journal_title

Microbial ecology

authors

Tugarova AV,Burov AM,Burashnikova MM,Kamnev AA

doi

10.1007/s00248-013-0329-6

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

155-60

issue

1

eissn

0095-3628

issn

1432-184X

journal_volume

67

pub_type

杂志文章
  • Fate of Pseudomonas putida after release into lake water mesocosms: Different survival mechanisms in response to environmental conditions.

    abstract::To study the fate of Pseudomonas putida DSM 3931 in an aquatic environment, cultures of the strain were released into lake water mesocosms. P. putida, bearing the TOL-plasmid, was released as a representative xenobiotic-degrading microorganism. The release was carried out in mesocosms with unamended lake water and in ...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/BF00165812

    authors: Brettar I,Ramos-Gonzalez MI,Ramos JL,Höfle MG

    更新日期:1994-01-01 00:00:00

  • Spatial Distribution Patterns of Bacterioplankton in the Oxygen Minimum Zone of the Tropical Mexican Pacific.

    abstract::Microbial communities within oxygen minimum zones (OMZs) are crucial drivers of marine biogeochemical cycles; however, we still lack an understanding of how these communities are distributed across an OMZ. We explored vertical (from 5 to 500 m depth) and horizontal (coast to open ocean) distribution of bacterioplankto...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-020-01508-7

    authors: Pajares S,Varona-Cordero F,Hernández-Becerril DU

    更新日期:2020-10-01 00:00:00

  • Genotypic and phenotypic diversity of cyanobacteria in biological soil crusts of the Succulent Karoo and Nama Karoo of southern Africa.

    abstract::Biological soil crusts (BSCs) are communities of cryptogamic organisms, occurring in arid and semiarid regions all over the world. Based on both morphological identification and genetic analyses, we established a first cyanobacterial inventory using the biphasic approach for BSCs within two major biomes of southern Af...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-013-0301-5

    authors: Dojani S,Kauff F,Weber B,Büdel B

    更新日期:2014-02-01 00:00:00

  • Arbuscular mycorrhizal symbiosis changes the colonization pattern of Acacia tortilis spp. Raddiana rhizosphere by two strains of rhizobia.

    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

    pub_type: 杂志文章

    doi:10.1007/s00248-002-1022-3

    authors: André S,Neyra M,Duponnois R

    更新日期:2003-02-01 00:00:00

  • Comparative study of the growth of two strains ofNitrobacter in batch and continuous culture.

    abstract::Growth kinetics of 2Nitrobacter strains (N.w. and L) coexisting in the same soil are studied in batch and continuous culture. Monod's parameters are estimated numerically from experimental data in the case of the batch experiment, and from steady-state equations in the case of the chemostat. In both cases, the 2 strai...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/BF02011417

    authors: Gay G,Corman A

    更新日期:1984-06-01 00:00:00

  • The Bacterial Community of the Foliose Macro-lichen Peltigera frigida Is More than a Mere Extension of the Microbiota of the Subjacent Substrate.

    abstract::Lichens host highly diverse microbial communities, with bacteria being one of the most explored groups in terms of their diversity and functioning. These bacteria could partly originate from symbiotic propagules developed by many lichens and, perhaps more commonly and depending on environmental conditions, from differ...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-020-01662-y

    authors: Leiva D,Fernández-Mendoza F,Acevedo J,Carú M,Grube M,Orlando J

    更新日期:2021-01-06 00:00:00

  • Soil functional diversity analysis of a bauxite-mined restoration chronosequence.

    abstract::Soil microorganisms are sensitive to environmental perturbations such that changes in microbial community structure and function can provide early signs of anthropogenic disturbances and even predict restoration success. We evaluated the bacterial functional diversity of un-mined and three chronosequence sites at vari...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-009-9621-x

    authors: Lewis DE,White JR,Wafula D,Athar R,Dickerson T,Williams HN,Chauhan A

    更新日期:2010-05-01 00:00:00

  • Aerobic methanotroph diversity in Sanjiang wetland, Northeast China.

    abstract::Aerobic methanotrophs present in wetlands can serve as a methane filter and thereby significantly reduce methane emissions. Sanjiang wetland is a major methane source and the second largest wetland in China, yet little is known about the characteristics of aerobic methanotrophs in this region. In the present study, we...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-014-0506-2

    authors: Yun J,Zhang H,Deng Y,Wang Y

    更新日期:2015-04-01 00:00:00

  • Micrococcus luteus -- survival in amber.

    abstract::A growing body of evidence now supports the isolation of microorganisms from ancient materials. However, questions about the stringency of extraction methods and the genetic relatedness of isolated organisms to their closest living relatives continue to challenge the authenticity of these ancient life forms. Previous ...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-003-2016-5

    authors: Greenblatt CL,Baum J,Klein BY,Nachshon S,Koltunov V,Cano RJ

    更新日期:2004-07-01 00:00:00

  • Microbial diversity of an anoxic zone of a hydroelectric power station reservoir in Brazilian Amazonia.

    abstract::Microbial diversity was evaluated in an anoxic zone of Tucuruí Hydroelectric Power Station reservoir in Brazilian Amazonia using a culture-independent approach by amplifying and sequencing fragments of the 16S rRNA gene using metagenomic DNA as a template. Samples obtained from the photic, aphotic (40 m) and sediment ...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-011-9906-8

    authors: Graças DA,Miranda PR,Baraúna RA,McCulloch JA,Ghilardi R Jr,Schneider MP,Silva A

    更新日期:2011-11-01 00:00:00

  • Drag-reducing properties of bacteria from the skin mucus of the cornetfish (Fistularia commersonii).

    abstract::Scanning electron microscopy and fluorescence microscopy after scanning with DAPI indicated that the skin mucus of the cornetfish contained large numbers of bacteria, 4 × 10(8) per cm3. However, viable counts yielded only 2 × 104 per cm(3). Twelve bacterial strains were isolated directly from the mucus and another ten...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/BF00171971

    authors: Bernadsky G,Rosenberg E

    更新日期:1992-07-01 00:00:00

  • Effect of several environmental parameters on carbon metabolism in histosols.

    abstract::High specific activity(14)C-labeled glucose, succinate, acetate, salicylate, and amino acids were used to examine carbon metabolism by the microbial community of Pahokee muck (aLithic medisaprist), a drained, cultivated soil of the Florida Everglades. Variations in carbon oxidation were observed from the end of the we...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/BF02020340

    authors: Tate RL 3rd

    更新日期:1980-12-01 00:00:00

  • Chlorobenzoate-degrading bacteria in similar pristine soils exhibit different community structures and population dynamics in response to anthropogenic 2-, 3-, and 4-chlorobenzoate levels.

    abstract::A study was conducted to determine the diversity of 2-, 3-, and 4-chlorobenzoate (CB) degraders in two pristine soils with similar physical and chemical characteristics. Surface soils were collected from forested sites and amended with 500 microg of 2-, 3-, or 4-CB g(-1) soil. The CB levels and degrader numbers were m...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-003-1048-1

    authors: Gentry TJ,Wang G,Rensing C,Pepper IL

    更新日期:2004-07-01 00:00:00

  • The establishment of an intestinal microflora in developing goldfish (Carassius auratus) of culture ponds.

    abstract::The bacterial flora in the intestinal tract of goldfish (Carassius auratus) was investigated at different stages of fish development. The floras of the diets and the water and sediment of a culture pond were also analyzed. The total counts in the intestine ranged from 2.2 × 10(6)-2.1 × 10(8) cells g(-1) wet weight.Aer...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/BF02012646

    authors: Sugita H,Tsunohara M,Ohkoshi T,Deguchi Y

    更新日期:1988-05-01 00:00:00

  • Population density-dependent metal tolerance: One possible basis and its ecological implications.

    abstract::A population density-dependent copper (Cu) resistance mechanism in a gram-negative soil bacterium, strain TDCd1, was shown to be inducible and was accompanied by changes in the protein composition of the outer membrane of the cell envelope. Characteristically, following inoculation of TDCd1 into Cu-supplemented growth...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/BF02075807

    authors: Duxbury T,McIntyre R

    更新日期:1989-11-01 00:00:00

  • Dominant and Subordinate Relationship Formed by Repeated Social Encounters Alters Gut Microbiota in Greater Long-Tailed Hamsters.

    abstract::Social stress can dramatically influence the health of animals via communication between gut microbiota and the HPA system. However, this effect has been rarely investigated among different social ranked animals after chronic repeated social encounters. In this study, we evaluated changes and differences in microbiota...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-019-01462-z

    authors: Zhao J,Li G,Lu W,Huang S,Zhang Z

    更新日期:2020-05-01 00:00:00

  • Inoculation effects of Pseudomonas putida, Gluconacetobacter azotocaptans, and Azospirillum lipoferum on corn plant growth under greenhouse conditions.

    abstract::Alcohol production from corn is gaining importance in Ontario, Canada, and elsewhere. A major cost of corn production is the cost of chemical fertilizers and these continue to increase in price. The competitiveness of alcohol with fossil fuels depends on access to low-cost corn that allows growers to earn a sustainabl...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-006-9039-7

    authors: Mehnaz S,Lazarovits G

    更新日期:2006-04-01 00:00:00

  • Greater Species Richness of Bacterial Skin Symbionts Better Suppresses the Amphibian Fungal Pathogen Batrachochytrium Dendrobatidis.

    abstract::The symbiotic microbes that grow in and on many organisms can play important roles in protecting their hosts from pathogen infection. While species diversity has been shown to influence community function in many other natural systems, the question of how species diversity of host-associated symbiotic microbes contrib...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-016-0916-4

    authors: Piovia-Scott J,Rejmanek D,Woodhams DC,Worth SJ,Kenny H,McKenzie V,Lawler SP,Foley JE

    更新日期:2017-07-01 00:00:00

  • Sediment Microbial Diversity of Three Deep-Sea Hydrothermal Vents Southwest of the Azores.

    abstract::Menez Gwen, Lucky Strike and Rainbow are the three most visited and well-known deep-sea hydrothermal vent fields in the Azores region, located in the Mid-Atlantic Ridge. Their distinct geological and ecological features allow them to support a diversity of vent communities, which are largely dependent on Bacteria and ...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-017-0943-9

    authors: Cerqueira T,Pinho D,Froufe H,Santos RS,Bettencourt R,Egas C

    更新日期:2017-08-01 00:00:00

  • Variations in Bacterial Community in a Temperate Lake Associated with an Agricultural Watershed.

    abstract::Terrestrially derived carbon and nutrients are washed into lakes, providing nutritional drivers for both microbial heterotrophy and phototrophy. Changes in the quantity and diversity of carbon and nutrients exported from watersheds in response to alterations in long-term land use have led to a need for evaluation of t...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-016-0783-z

    authors: Song L,Li L

    更新日期:2016-08-01 00:00:00

  • The RNA Virome and Its Dynamics in an Invasive Fruit Fly, Bactrocera dorsalis, Imply Interactions Between Host and Viruses.

    abstract::The oriental fruit fly, Bactrocera dorsalis (Hendel), is an important invasive agricultural insect pest with a wide host range, and has spread around the world over the last century. This evolutionary trait may have arisen primarily from interactions between B. dorsalis and other invertebrates that share the same ecol...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-020-01506-9

    authors: Zhang W,Gu Q,Niu J,Wang JJ

    更新日期:2020-08-01 00:00:00

  • Spatial Patterns of Soil Microbial Communities in a Norway Spruce (Picea abies) Plantation.

    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

    pub_type: 杂志文章

    doi:10.1007/s00248-001-0006-z

    authors: Wilkinson SC,Anderson JM

    更新日期:2001-10-01 00:00:00

  • Novel microbial populations in deep granitic groundwater from Grimsel Test Site, Switzerland.

    abstract::Freshwater aquifers in granitic rocks are widespread microbial habitats in the terrestrial subsurface. Microbial populations in deep granitic groundwater from two recently drilled (1 and 2 years) and two old boreholes (14 and 25 years) were compared. The 16S rRNA gene sequences related to "Candidatus Magnetobacterium ...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-013-0184-5

    authors: Konno U,Kouduka M,Komatsu DD,Ishii K,Fukuda A,Tsunogai U,Ito K,Suzuki Y

    更新日期:2013-04-01 00:00:00

  • Evaluation of the Physiological Bacterial Groups in a Tropical Biosecured, Zero-Exchange System Growing Whiteleg Shrimp, Litopenaeus vannamei.

    abstract::To elucidate the individual and multiple roles of physiological bacterial groups involved in biogeochemical cycles of carbon, nitrogen, phosphorus and sulfur, the changes in the abundance of aerobic bacteria (heterotrophs, methane oxidizers, ammonia oxidizers, sulfur oxidizers, phosphate solubilizers, phosphate accumu...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-020-01575-w

    authors: Sabu EA,Gonsalves MJ,Sreepada RA,Shivaramu MS,Ramaiah N

    更新日期:2021-02-01 00:00:00

  • Presence of acyl-homoserine lactone in subtidal biofilm and the implication in larval behavioral response in the polychaete Hydroides elegans.

    abstract::Quorum sensing (QS) signals have been considered to play important roles in biofilm development and in the attractiveness of biofilms to higher organisms in marine ecosystem. In this study, bacterial QS signalsacylated homoserine lactone derivatives (AHLs) were detected in 2-, 4-, and 6-day-old subtidal biofilms by us...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-007-9210-9

    authors: Huang YL,Dobretsov S,Ki JS,Yang LH,Qian PY

    更新日期:2007-08-01 00:00:00

  • Isolation ofNostoc muscorum cyanophages from a domestic sewage.

    abstract::TwoNostoc muscorum cyanophages were isolated from a domestic sewage in Kuwait. N-1L cyanophage had a hexagonal head with a long tail, while N-2S cyanophage was a short-tailed virus. N-1L cyanophage was active at 50°C and at acidic pH, compared with N-2S, which was more heat stable and active at pH 7.0. Seasonal variat...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/BF02025002

    authors: Sallal AK,Nimr ND,Al-Sharif HF

    更新日期:1987-05-01 00:00:00

  • Symbiotic relationships of legumes and nodule bacteria on Barro Colorado Island, Panama: a review.

    abstract::Abstract New data on 129 bacterial isolates were analyzed together with prior samples to characterize community-level patterns of legume-rhizobial symbiosis on Barro Colorado Island (BCI), Panama. Nodules have been sampled from 24 BCI legume species in 18 genera, representing about one quarter of the legume species an...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-007-9309-z

    authors: Parker MA

    更新日期:2008-05-01 00:00:00

  • Aeromonas sobria in chlorinated drinking water supplies.

    abstract::Aeromonas species were recovered from over 27% of 183 chlorinated drinking water samples collected during an 18-month period. Sixteen of 20 isolates tested elicited a cytotoxic response by Y-1 mouse adrenal cells. None of the strains was either enterotoxigenic by the rabbit ligated ileal loop assay, exhibited piliatio...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/BF02010672

    authors: Lechevallier MW,Evans TM,Seidler RJ,Daily OP,Merrell BR,Rollins DM,Joseph SW

    更新日期:1982-12-01 00:00:00

  • Phyllosphere Metaproteomes of Trees from the Brazilian Atlantic Forest Show High Levels of Functional Redundancy.

    abstract::The phyllosphere of the Brazilian Atlantic Forest has been estimated to contain several million bacterial species that are associated with approximately 20000 plant species. Despite the high bacterial diversity in the phyllosphere, the function of these microorganisms and the mechanisms driving their community assembl...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-016-0878-6

    authors: Lambais MR,Barrera SE,Santos EC,Crowley DE,Jumpponen A

    更新日期:2017-01-01 00:00:00

  • Molecular detection of murine herpesvirus 68 in ticks feeding on free-living reptiles.

    abstract::The MHV-68 (designed as Murid herpesvirus 4 (MuHV 4) strain 68) isolated from two rodents, Myodes glareolus and Apodemus flavicollis, is considered as a natural pathogen of free-living murid rodents. Recently, the detection of MHV antibodies in the blood of animals living in the same biotope as MHV-infected mice has s...

    journal_title:Microbial ecology

    pub_type: 杂志文章

    doi:10.1007/s00248-011-9907-7

    authors: Ficová M,Betáková T,Pančík P,Václav R,Prokop P,Halásová Z,Kúdelová M

    更新日期:2011-11-01 00:00:00