Abstract:
:The number of icebergs produced from ice-shelf disintegration has increased over the past decade in Antarctica. These drifting icebergs mix the water column, influence stratification and nutrient condition, and can affect local productivity and food web composition. Data on whether icebergs affect bacterioplankton function and composition are scarce, however. We assessed the influence of iceberg drift on bacterial community composition and on their ability to exploit carbon substrates during summer in the coastal Southern Ocean. An elevated bacterial production and a different community composition were observed in iceberg-influenced waters relative to the undisturbed water column nearby. These major differences were confirmed in short-term incubations with bromodeoxyuridine followed by CARD-FISH. Furthermore, one-week bottle incubations amended with inorganic nutrients and carbon substrates (a mix of substrates, glutamine, N-acetylglucosamine, or pyruvate) revealed contrasting capacity of bacterioplankton to utilize specific carbon substrates in the iceberg-influenced waters compared with the undisturbed site. Our study demonstrates that the hydrographical perturbations introduced by a drifting iceberg can affect activity, composition, and substrate utilization capability of marine bacterioplankton. Consequently, in a context of global warming, increased frequency of drifting icebergs in polar regions holds the potential to affect carbon and nutrient biogeochemistry at local and possibly regional scales.
journal_name
Environ Microbioljournal_title
Environmental microbiologyauthors
Dinasquet J,Richert I,Logares R,Yager P,Bertilsson S,Riemann Ldoi
10.1111/1462-2920.13769subject
Has Abstractpub_date
2017-06-01 00:00:00pages
2453-2467issue
6eissn
1462-2912issn
1462-2920journal_volume
19pub_type
杂志文章abstract::A 47 kb genomic island (GEI) bracketed by 50 bp direct repeats, containing 52 annotated genes, was found to delete spontaneously from the genome of Desulfovibrio vulgaris Hildenborough. The island contains genes for site-specific recombinases and transposases, rubredoxin:oxygen oxidoreductase-1 (Roo1) and hybrid clust...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2008.01823.x
更新日期:2009-04-01 00:00:00
abstract::The ADP ribosylation factor (Arf) and the coat protein complex I (COPI) are involved in vesicle transport. Together with GTPase-activating proteins (ArfGAPs) and guanine exchange factors (ArfGEFs) that regulate the activity of Arf, they govern vesicle formation, COPI trafficking and the maintenance of the Golgi comple...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13798
更新日期:2017-10-01 00:00:00
abstract::Marine sponges often harbour communities of symbiotic microorganisms that fulfil necessary functions for the well-being of their hosts. Microbial communities associated with the sponge Rhopaloeides odorabile were used as bioindicators for sublethal cupric ion (Cu2+) stress. A combined strategy incorporating molecular,...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1046/j.1462-2920.2001.00155.x
更新日期:2001-01-01 00:00:00
abstract::Biofilm formation is crucial to the environmental survival and transmission of Vibrio cholerae, the facultative human pathogen responsible for the disease cholera. During its infectious cycle, V. cholerae experiences fluctuations in temperature within the aquatic environment and during the transition between human hos...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12799
更新日期:2015-11-01 00:00:00
abstract::Under conditions of iron limitation Pseudomonas fluorescens ATCC 17400 produces two siderophores, pyoverdine, and a second siderophore quinolobactin, which itself results from the hydrolysis of the unstable molecule 8-hydroxy-4-methoxy-2-quinoline thiocarboxylic acid (thioquinolobactin). Pseudomonas fluorescens ATCC 1...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2006.01154.x
更新日期:2007-02-01 00:00:00
abstract::Toluene is a model compound used to study the anaerobic biotransformation of aromatic hydrocarbons. Reports indicate that toluene is transformed via fumarate addition to form benzylsuccinate or by unknown mechanisms to form hydroxylated intermediates under methanogenic conditions. We investigated the mechanism(s) of s...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2011.02631.x
更新日期:2012-03-01 00:00:00
abstract::Harmful blooms of the cyanobacterium Microcystis sp. have become increasingly pervasive in the San Francisco Estuary Delta (USA) since the early 2000s and their rise has coincided with substantial decreases in several important fish species. Direct and indirect effects Microcystis blooms may have on the Delta food web...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13860
更新日期:2017-09-01 00:00:00
abstract::Novel hydrothermal activities accompanying effluent white smokers and elemental sulfur chimney structures at the north-east lava dome of the TOTO caldera depression in the Mariana Volcanic Arc have been explored and characterized by geochemical and microbiological surveys. White smoker hydrothermal fluids were observe...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2005.00884.x
更新日期:2006-01-01 00:00:00
abstract::A study was conducted in a Castanea sativa forest that produces large quantities of the edible mushroom porcini (Boletus edulis sensu lato). The primary aim was to study porcini mycelia in the soil, and to determine if there were any possible ecological and functional interactions with other dominant soil fungi. Three...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2006.01208.x
更新日期:2007-04-01 00:00:00
abstract::The biology of biofilm in deep-sea environments is barely being explored. Here, biofilms were developed at the brine pool (characterized by limited carbon sources) and the normal bottom water adjacent to Thuwal cold seeps. Comparative metagenomics based on 50 Gb datasets identified polysaccharide degradation, nitrate ...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12978
更新日期:2015-10-01 00:00:00
abstract::Mas5, a yeast heat shock protein classified to the Hsp40 group, is homologous to bacterial archetype DnaJ but functionally unexplored in filamentous fungi. Here we identify a Mas5 homologue (46.86 kDa) in Beauveria bassiana and show its indispensability for host infection and environmental adaptation of the fungal ins...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13197
更新日期:2016-03-01 00:00:00
abstract::The bacteria in the fruitfly Drosophila melanogaster of different life stages was quantified by 454 pyrosequencing of 16S rRNA gene amplicons. The sequence reads were dominated by 5 operational taxonomic units (OTUs) at ≤ 97% sequence identity that could be assigned to Acetobacter pomorum, A. tropicalis, Lactobacillus...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2011.02511.x
更新日期:2011-07-01 00:00:00
abstract::Environmental SSU rDNA-based surveys are contributing to the dramatic revision of eukaryotic high-level diversity and phylogeny as the number of sequence data increases. This ongoing revolution gives the opportunity to test for the presence of some eukaryotic taxa in environments where they have not been found using c...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2010.02225.x
更新日期:2010-09-01 00:00:00
abstract::Global change models indicate that rainfall patterns are likely to shift towards more extreme events concurrent with increasing atmospheric carbon dioxide concentration ([CO2 ]). Both changes in [CO2 ] and rainfall regime are known to impact above- and belowground communities, but the interactive effects of these glob...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13802
更新日期:2017-08-01 00:00:00
abstract::Concatenated sequence analysis with 16S rRNA, rpoB and fusA genes identified a bacterial strain (IRBG74) isolated from root nodules of the aquatic legume Sesbania cannabina as a close relative of the plant pathogen Rhizobium radiobacter (syn. Agrobacterium tumefaciens). However, DNA:DNA hybridization with R. radiobact...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2009.01975.x
更新日期:2009-10-01 00:00:00
abstract::Pseudomonas aeruginosa is a widely distributed environmental bacterium but is also an opportunistic pathogen that represents an important health hazard due to its high intrinsic antibiotic resistance and its production of virulence factors. The genetic structure of P. aeruginosa populations using whole genome sequence...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.14692
更新日期:2019-08-01 00:00:00
abstract::Nostoc flagelliforme is well known for its strong ecological adaptability in inhabiting desert biological soil crusts. However, the mechanism of its recovery from quiescent to active state after prolonged dormancy remains poorly characterized. Especially how exoproteome be related to the adaptive strategies and partic...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.14931
更新日期:2020-04-01 00:00:00
abstract::Yersinia ruckeri is the causative agent of enteric redmouth in fish and one of the major bacterial pathogens causing losses in salmonid aquaculture. Previously typing methods, including restriction enzyme analysis, pulsed-field gel electrophoresis and multilocus enzyme electrophoresis (MLEE) have indicated a clonal po...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2012.02735.x
更新日期:2012-08-01 00:00:00
abstract::Acid rain can cause severe effects on soil biota and nutrient biogeochemical cycles in the forest ecosystem, but how plant-symbiotic ectomycorrhizal fungi will modulate the effects remains unknown. Here, we conducted a full factorial field experiment in a Masson pine forest by simultaneously controlling the acidity of...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.14457
更新日期:2019-01-01 00:00:00
abstract::Geothermal springs are essentially unaffected by environmental conditions aboveground as they are continuously supplied with subsurface water with little variability in chemistry. Therefore, changes in their microbial community composition and function, especially over a long period, are expected to be limited but thi...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.15373
更新日期:2020-12-21 00:00:00
abstract::Multiprotein bridging factors (MBFs) are evolutionarily highly conserved cofactors that link TATA-binding protein and the associated basal transcription machinery to transcription factors. The filamentous fungus, Beauveria bassiana, has a multipotential lifestyle capable of growing as a saprophyte, plant endophyte and...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12450
更新日期:2014-06-01 00:00:00
abstract::The d- and l-forms of lactate are important fermentation metabolites produced by intestinal bacteria but are found to negatively affect mucosal barrier function and human health. Both enantiomers of lactate can be converted with acetate into the presumed beneficial butyrate by a phylogenetically related group of anaer...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.15269
更新日期:2020-11-01 00:00:00
abstract::Serratia sp. ATCC 39006 produces intracellular gas vesicles to enable upward flotation in water columns. It also uses flagellar rotation to swim through liquid and swarm across semi-solid surfaces. Flotation and motility can be co-regulated with production of a β-lactam antibiotic (carbapenem carboxylate) and a linear...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.15048
更新日期:2020-07-01 00:00:00
abstract::Tropical lake sediments are a significant source for the greenhouse gas methane. We studied function (pathway, rate) and structure (abundance, taxonomic composition) of the microbial communities (Bacteria, Archaea) leading to methane formation together with the main physicochemical characteristics in the sediments of ...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13491
更新日期:2016-12-01 00:00:00
abstract::Molecules of the diffusible signal factor (DSF)-family are a class of quorum sensing (QS) signals used by the phytopathogens Xanthomonas. Studies during the last decade have outlined how Xanthomonas cells enter the QS phase. However, information on the mechanism underlying its exit from the QS phase is limited. RpfB h...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12999
更新日期:2015-11-01 00:00:00
abstract::We designed and tested a set of specific primers for specific PCR amplification of the biotin carboxylase subunit gene (accC) of the Acetyl CoA carboxylase (ACCase) enzyme. The primer set yielded a PCR product of c. 460 bp that was suitable for denaturing gradient gel electrophoresis (DGGE) fingerprinting followed by ...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2008.01677.x
更新日期:2008-10-01 00:00:00
abstract::Diverse methylotrophic bacteria were isolated from the tongue, and supra- and subgingival plaque in the mouths of volunteers and patients with periodontitis. One-carbon compounds such as dimethylsulfide in the mouth are likely to be used as growth substrates for these organisms. Methylotrophic strains of Bacillus, Bre...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2005.00805.x
更新日期:2005-08-01 00:00:00
abstract::Understanding the ecosystem functioning in the dark portion of the ocean is a challenge that microbial ecologists are still facing. Due to the large volume, the global deep Ocean plays a central role in the regulation of climate, possibly buffering the rise of atmospheric carbon dioxide if processes of CO2 fixation co...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13641
更新日期:2017-03-01 00:00:00
abstract::The interactions of Vibrio aestuarianus 01/032 with haemolymph of the bivalves Mytilus galloprovincialis and Crassostrea gigas were investigated to understand if haemolymph components (haemocytes and soluble factors) could be involved in the higher resistance to microbial infection shown by mussels in comparison with ...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12750
更新日期:2015-11-01 00:00:00
abstract::Stable carbon isotope signatures of diagnostic lipid biomarkers have suggested that Roseiflexus spp., the dominant filamentous anoxygenic phototrophic bacteria inhabiting microbial mats of alkaline siliceous hot springs, may be capable of fixing bicarbonate via the 3-hydroxypropionate pathway, which has been character...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2007.01323.x
更新日期:2007-08-01 00:00:00