abstract：:Melanization due to the inactivation of the homogentisate-1,2-dioxygenase gene (hmgA) has been demonstrated to increase stress resistance, persistence, and virulence in some bacterial species but such pigmented mutants have not been observed in pathogenic members of the Vibrio Harveyi clade. In this study, we used Vib...

journal_title：Frontiers in microbiology

authors： Wang Z,Lin B,Mostaghim A,Rubin RA,Glaser ER,Mittraparp-Arthorn P,Thompson JR,Vuddhakul V,Vora GJ

更新日期：2013-12-11 00:00:00

abstract：:Cyanobacteria, a group of photosynthetic prokaryotes, oscillate between day and night time metabolisms with concomitant oscillations in gene expression in response to light/dark cycles (LD). The oscillations in gene expression have been shown to sustain in constant light (LL) with a free running period of 24 h in a mo...

journal_title：Frontiers in microbiology

authors： Gaudana SB,Krishnakumar S,Alagesan S,Digmurti MG,Viswanathan GA,Chetty M,Wangikar PP

更新日期：2013-12-06 00:00:00

abstract：:To successfully infect plants, viruses replicate in an initially infected cell and then move to neighboring cells through plasmodesmata (PDs). However, the nature of the viral entity that crosses over the cell barrier into non-infected ones is not clear. The membrane-associated 6K2 protein of turnip mosaic virus (TuMV...

journal_title：Frontiers in microbiology

authors： Grangeon R,Jiang J,Wan J,Agbeci M,Zheng H,Laliberté JF

更新日期：2013-12-04 00:00:00

abstract：:Geological CO2 sequestration in unmineable subsurface oil/gas fields and coal formations has been proposed as a means of reducing anthropogenic greenhouse gasses in the atmosphere. However, the feasibility of injecting CO2 into subsurface depends upon a variety of geological and economic conditions, and the ecological...

journal_title：Frontiers in microbiology

authors： Ohtomo Y,Ijiri A,Ikegawa Y,Tsutsumi M,Imachi H,Uramoto G,Hoshino T,Morono Y,Sakai S,Saito Y,Tanikawa W,Hirose T,Inagaki F

更新日期：2013-12-02 00:00:00

abstract：:Aerobic degradation of methylphosphonate (MPn) by marine bacterioplankton has been hypothesized to contribute significantly to the ocean's methane supersaturation, yet little is known about MPn utilization by marine microbes. To identify the microbial taxa and metabolic functions associated with MPn-driven methane pro...

journal_title：Frontiers in microbiology

authors： Martínez A,Ventouras LA,Wilson ST,Karl DM,Delong EF

更新日期：2013-11-26 00:00:00

abstract：:Ralstonia solanacearum is a soil and water-borne pathogen that can infect a wide range of plants and cause the devastating bacterial wilt disease. To successfully colonize a host, R. solanacearum requires the type III secretion system (T3SS), which delivers bacterial effector proteins inside the plant cells. HrpG is a...

journal_title：Frontiers in microbiology

authors： Zuluaga AP,Puigvert M,Valls M

更新日期：2013-11-20 00:00:00

abstract：:Porcine strains of livestock-associated methicillin resistant Staphylococcus aureus (LA-MRSA) have been recognized in many countries and have been shown to be able to cause human infection. Resistance to non-beta lactam antibiotics has been reported but non-susceptibility to vancomycin, which is known to occur in huma...

journal_title：Frontiers in microbiology

authors： Kwok GM,O'Donoghue MM,Doddangoudar VC,Ho J,Boost MV

更新日期：2013-10-25 00:00:00

abstract：:Epstein-Barr virus (EBV) is a ubiquitous human γ-herpes virus which establishes a life-long asymptomatic infection in immunocompetent hosts. In human immunodeficiency virus type 1 (HIV-1) infected patients, the impaired immunosurveillance against EBV may favor the development of EBV-related diseases, ranging from lymp...

journal_title：Frontiers in microbiology

authors： Petrara MR,Freguja R,Gianesin K,Zanchetta M,De Rossi A

更新日期：2013-10-18 00:00:00

abstract：:Microorganisms are able to adapt to different environments and evolve rapidly, allowing them to cope with their new environments. Such adaptive response and associated protections toward other lethal stresses, is a crucial survival strategy for a wide spectrum of microorganisms, including food spoilage bacteria, patho...

journal_title：Frontiers in microbiology

authors： Desriac N,Broussolle V,Postollec F,Mathot AG,Sohier D,Coroller L,Leguerinel I

更新日期：2013-10-02 00:00:00

abstract：:The mechanism of DNA replication is one of the driving forces of genome evolution. Bacterial DNA polymerase III, the primary complex of DNA replication, consists of PolC and DnaE. PolC is conserved in Gram-positive bacteria, especially in the Firmicutes with low GC content, whereas DnaE is widely conserved in most Gra...

journal_title：Frontiers in microbiology

authors： Akashi M,Yoshikawa H

更新日期：2013-09-17 00:00:00

abstract：:Soil carbon (C) storage is dependent upon the complex dynamics of fresh and native organic matter cycling, which are regulated by plant and soil-microbial activities. A fundamental challenge exists to link microbial biodiversity with plant-soil C cycling processes to elucidate the underlying mechanisms regulating soil...

journal_title：Frontiers in microbiology

authors： Thomson BC,Ostle NJ,McNamara NP,Oakley S,Whiteley AS,Bailey MJ,Griffiths RI

更新日期：2013-09-10 00:00:00

abstract：:Soil microbial communities are intricately linked to ecosystem functioning because they play important roles in carbon and nitrogen cycling. Still, we know little about how soil microbial communities will be affected by disturbances expected with climate change. This is a significant gap in understanding, as the stabi...

journal_title：Frontiers in microbiology

authors： de Vries FT,Shade A

更新日期：2013-09-05 00:00:00

abstract：:Thiobacillus denitrificans is a chemolithoautotrophic bacterium capable of anaerobic, nitrate-dependent U(IV) and Fe(II) oxidation, both of which can strongly influence the long-term efficacy of in situ reductive immobilization of uranium in contaminated aquifers. We previously identified two c-type cytochromes involv...

journal_title：Frontiers in microbiology

authors： Beller HR,Zhou P,Legler TC,Chakicherla A,Kane S,Letain TE,A O'Day P

更新日期：2013-08-27 00:00:00

abstract：:The activation of CD4(+) T helper cells is strictly dependent on the presentation of antigenic peptides by MHC class II (MHC-II) molecules. MHC-II expression is primarily regulated at the transcriptional level by the AIR-1 gene product CIITA (class II transactivator). Thus, CIITA plays a pivotal role in the triggering...

journal_title：Frontiers in microbiology

authors： Forlani G,Abdallah R,Accolla RS,Tosi G

更新日期：2013-08-22 00:00:00

abstract：:Marine microorganisms, particularly those residing in coastal areas, may come in contact with any number of chemicals of environmental or xenobiotic origin. The sensitivity and response of marine cyanobacteria to such chemicals is, at present, poorly understood. We have looked at the transcriptional response of well c...

journal_title：Frontiers in microbiology

authors： Tetu SG,Johnson DA,Varkey D,Phillippy K,Stuart RK,Dupont CL,Hassan KA,Palenik B,Paulsen IT

更新日期：2013-08-16 00:00:00

abstract：:The Spirochaetes species cause many important diseases including syphilis and Lyme disease. Except for their containing a distinctive endoflagella, no other molecular or biochemical characteristics are presently known that are specific for either all Spirochaetes or its different families. We report detailed comparati...

journal_title：Frontiers in microbiology

authors： Gupta RS,Mahmood S,Adeolu M

更新日期：2013-07-30 00:00:00

abstract：:Aerobic granular sludge (AGS) is based on self-granulated flocs forming mobile biofilms with a gel-like consistence. Bacterial and structural dynamics from flocs to granules were followed in anaerobic-aerobic sequencing batch reactors (SBR) fed with synthetic wastewater, namely a bubble column (BC-SBR) operated under ...

journal_title：Frontiers in microbiology

authors： Weissbrodt DG,Neu TR,Kuhlicke U,Rappaz Y,Holliger C

更新日期：2013-07-10 00:00:00

abstract：:Macaque monkeys serve as important animal models for understanding the pathogenesis of lentiviral infections. Since human immunodeficiency virus type 1 (HIV-1) hardly replicates in macaque cells, simian immunodeficiency virus (SIV) or chimeric viruses between HIV-1 and SIV (SHIV) have been used as challenge viruses in...

journal_title：Frontiers in microbiology

authors： Saito A,Akari H

更新日期：2013-07-09 00:00:00

abstract：:RNA viruses have a great potential for genetic variation, rapid evolution and adaptation. Characterization of the genetic variation of viral populations provides relevant information on the processes involved in virus evolution and epidemiology and it is crucial for designing reliable diagnostic tools and developing e...

journal_title：Frontiers in microbiology

authors： Rubio L,Guerri J,Moreno P

更新日期：2013-06-26 00:00:00

abstract：:This study addresses a major issue in microbial food safety, the elucidation of correlations between acid stress and changes in membrane fluidity of the pathogen Listeria monocytogenes. In order to assess the possible role that membrane fluidity changes play in L. monocytogenes tolerance to antimicrobial acids (acetic...

journal_title：Frontiers in microbiology

authors： Diakogiannis I,Berberi A,Siapi E,Arkoudi-Vafea A,Giannopoulou L,Mastronicolis SK

更新日期：2013-06-14 00:00:00

abstract：:Fluoroquinolone resistance can cause major clinical problems. Here, we investigated fluoroquinolone resistance mechanisms in a clinical Escherichia coli isolate, HUE1, which had no mutations quinolone resistance-determining regions (QRDRs) of DNA gyrase and topoisomerase IV. HUE1 demonstrated MICs that exceeded the br...

journal_title：Frontiers in microbiology

authors： Sato T,Yokota S,Uchida I,Okubo T,Usui M,Kusumoto M,Akiba M,Fujii N,Tamura Y

更新日期：2013-05-24 00:00:00

abstract：:The prevalence of antimicrobial resistance (AR) in bacteria isolated from U.S. food animals has increased over the last several decades as have concerns of AR foodborne zoonotic human infections. Resistance mechanisms identified in U.S. animal isolates of Salmonella enterica included resistance to aminoglycosides (e.g...

journal_title：Frontiers in microbiology

authors： Frye JG,Jackson CR

更新日期：2013-05-23 00:00:00

abstract：:The genus Crinivirus includes the whitefly-transmitted members of the family Closteroviridae. Whitefly-transmitted viruses have emerged as a major problem for world agriculture and are responsible for diseases that lead to losses measured in the billions of dollars annually. Criniviruses emerged as a major agricultura...

journal_title：Frontiers in microbiology

authors： Tzanetakis IE,Martin RR,Wintermantel WM

更新日期：2013-05-16 00:00:00

abstract：:The process of transformation of table olives from tree to table is the result of complex biochemical reactions that are determined by the interactions between the indigenous microflora of the olives, together with a variety of contaminating microrganisms from different sources [fiber-glass fermenters, polyvinyl chlor...

journal_title：Frontiers in microbiology

authors： Lanza B

更新日期：2013-05-10 00:00:00

abstract：:Six aerobic alkanotrophs (organism that can metabolize alkanes as their sole carbon source) isolated from deep-sea hydrothermal vents were characterized using the radical clock substrate norcarane to determine the metalloenzyme and reaction mechanism used to oxidize alkanes. The organisms studied were Alcanivorax sp. ...

journal_title：Frontiers in microbiology

authors： Bertrand EM,Keddis R,Groves JT,Vetriani C,Austin RN

更新日期：2013-05-10 00:00:00

abstract：:Recent evidence has shown that antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) are ubiquitous in natural environments, including sites considered pristine. To understand the origin of ARGs and their dynamics, we must first define their actual presence in the natural bacterial assemblage. Her...

journal_title：Frontiers in microbiology

authors： Suzuki S,Ogo M,Miller TW,Shimizu A,Takada H,Siringan MA

更新日期：2013-04-30 00:00:00

abstract：:Grapevine leafroll disease (GLD) is caused by a complex of vector-borne virus species in the family Closteroviridae. GLD is present in all grape-growing regions of the world, primarily affecting wine grape varieties. The disease has emerged in the last two decades as one of the major factors affecting grape fruit qual...

journal_title：Frontiers in microbiology

authors： Almeida RP,Daane KM,Bell VA,Blaisdell GK,Cooper ML,Herrbach E,Pietersen G

更新日期：2013-04-24 00:00:00

abstract：:Grapevine leafroll disease (GLD) is one of the most important grapevine viral diseases affecting grapevines worldwide. The impact on vine health, crop yield, and quality is difficult to assess due to a high number of variables, but significant economic losses are consistently reported over the lifespan of a vineyard i...

journal_title：Frontiers in microbiology

authors： Maree HJ,Almeida RP,Bester R,Chooi KM,Cohen D,Dolja VV,Fuchs MF,Golino DA,Jooste AE,Martelli GP,Naidu RA,Rowhani A,Saldarelli P,Burger JT

更新日期：2013-04-16 00:00:00

abstract：:B-vitamins are recognized as essential organic growth factors for many organisms, although little is known about their abundance and distribution in marine ecosystems. Despite their metabolic functions regulating important enzymatic reactions, the methodology to directly measure different B-vitamins in aquatic environ...

journal_title：Frontiers in microbiology

authors： Barada LP,Cutter L,Montoya JP,Webb EA,Capone DG,Sañudo-Wilhelmy SA

更新日期：2013-03-07 00:00:00

abstract：:Microorganisms are an essential component of cheeses and play important roles during both cheese manufacture and ripening. Both starter and secondary flora modify the physical and chemical properties of cheese, contributing and reacting to changes that occur during the manufacture and ripening of cheese. As the compos...

journal_title：Frontiers in microbiology

authors： Neviani E,Bottari B,Lazzi C,Gatti M

更新日期：2013-02-28 00:00:00

abstract：:Symbioses in marine sponges involve diverse consortia of microorganisms that contribute to the health and ecology of their hosts. The microbial communities of 13 taxonomically diverse Great Barrier Reef (GBR) sponge species were assessed by DGGE and 16S rRNA gene sequencing to determine intra and inter species variati...

journal_title：Frontiers in microbiology

authors： Webster NS,Luter HM,Soo RM,Botté ES,Simister RL,Abdo D,Whalan S

更新日期：2013-01-18 00:00:00

abstract：:Ballast water (BW) is a major transport vector of exotic aquatic species and pathogenic microorganisms. The wide-ranging spread of toxigenic Vibrio cholerae O1 from harbor areas has been frequently ascribed to discharge of contaminated BW into eutrophic coastal environments, such as during the onset of the seventh cho...

journal_title：Frontiers in microbiology

authors： Rivera IN,Souza KM,Souza CP,Lopes RM

更新日期：2013-01-14 00:00:00

abstract：:The microbial processes of denitrification and dissimilatory nitrate reduction to ammonium (DNRA) are two important nitrate reducing mechanisms in soil, which are responsible for the loss of nitrate ([Formula: see text]) and production of the potent greenhouse gas, nitrous oxide (N(2)O). A number of factors are known ...

journal_title：Frontiers in microbiology

authors： Giles M,Morley N,Baggs EM,Daniell TJ

更新日期：2012-12-18 00:00:00

abstract：:The use of antibiotic agents as growth promoters was banned in animal husbandry to prevent the selection and spread of antibiotic resistance. However, in addition to antibiotic agents, heavy metals used in animal farming and aquaculture might promote the spread of antibiotic resistance via co-selection. To investigate...

journal_title：Frontiers in microbiology

authors： Seiler C,Berendonk TU

更新日期：2012-12-14 00:00:00

abstract：:Genes that are constitutively expressed across multiple environmental stimuli are crucial to quantifying differentially expressed genes, particularly when employing quantitative reverse transcriptase polymerase chain reaction (RT-qPCR) assays. However, the identification of these potential reference genes in non-model...

journal_title：Frontiers in microbiology

authors： Alexander H,Jenkins BD,Rynearson TA,Saito MA,Mercier ML,Dyhrman ST

更新日期：2012-11-09 00:00:00

abstract：:Nitrous oxide (N(2)O) is an environmentally important atmospheric trace gas because it is an effective greenhouse gas and it leads to ozone depletion through photo-chemical nitric oxide (NO) production in the stratosphere. Mitigating its steady increase in atmospheric concentration requires an understanding of the mec...

journal_title：Frontiers in microbiology

authors： Schreiber F,Wunderlin P,Udert KM,Wells GF

更新日期：2012-10-23 00:00:00

abstract：:Iron (Fe) is an essential micronutrient for many processes in all living cells. Dissolved Fe (dFe) concentrations in the ocean are of the order of a few nM, and Fe is often a factor limiting primary production. Bioavailability of Fe in aquatic environments is believed to be primarily controlled through chelation by Fe...

journal_title：Frontiers in microbiology

authors： Desai DK,Desai FD,Laroche J

更新日期：2012-10-18 00:00:00

abstract：:While vitamin B(12) has recently been shown to co-limit the growth of coastal phytoplankton assemblages, the cycling of B-vitamins in coastal ecosystems is poorly understood as planktonic uptake rates of vitamins B(1) and B(12) have never been quantified in tandem in any aquatic ecosystem. The goal of this study was t...

journal_title：Frontiers in microbiology

authors： Koch F,Hattenrath-Lehmann TK,Goleski JA,Sañudo-Wilhelmy S,Fisher NS,Gobler CJ

更新日期：2012-10-12 00:00:00

abstract：:The contribution of ammonia-oxidizing bacteria and archaea (AOB and AOA, respectively) to the net oxidation of ammonia varies greatly between terrestrial environments. To better understand, predict and possibly manage terrestrial nitrogen turnover, we need to develop a conceptual understanding of ammonia oxidation as ...

journal_title：Frontiers in microbiology

authors： Daebeler A,Abell GC,Bodelier PL,Bodrossy L,Frampton DM,Hefting MM,Laanbroek HJ

更新日期：2012-10-04 00:00:00

abstract：:Simultaneous use of both heterotrophic and autotrophic metabolism ("mixotrophy") is common among protists. Strombidium rassoulzadegani is a planktonic mixotrophic marine ciliate that saves chloroplasts from its algal food and obtains a nutritional subsidy via photosynthesis. Cultures from the northeast, northwest, and...

journal_title：Frontiers in microbiology

authors： McManus GB,Schoener DM,Haberlandt K

更新日期：2012-09-04 00:00:00