Abstract：
:Fish gut microbiota play important roles in fish immunity, nutrition, and the adaptation to environmental changes. To date, few studies have focused on the interactions among environmental factors, fish diseases, and gut microbiota compositions. We compared the gut bacterial communities of healthy crucian carps (Carassius auratus) with those of individuals affected by "red-operculum" disease and corresponding water and sediment microbiota in four fish farm ponds. Distinct gut bacterial communities were observed in healthy and diseased fish. The bacterial communities of diseased fish were less diverse and stable than those of healthy individuals. The differences in bacterial community compositions between diseased and healthy fish were explained by the changes in the relative abundances of some specific bacterial OTUs, which belonged to the genera such as Vibrio, Aeromonas, and Shewanella, and they were prevalent in diseased fish, but rare or even absent in environmental samples. Water temperature and ammonia concentration were the two most important environmental factors that impacted gut microbiota in diseased fish. These results highlighted the surge of some potential pathogens as bacterial signatures that were associated with "red-operculum" disease in crucian carps.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Li T,Li H,Gatesoupe FJ,She R,Lin Q,Yan X,Li J,Li Xdoi
10.1007/s00248-017-0967-1subject
Has Abstractpub_date
2017-10-01 00:00:00pages
510-521issue
3eissn
0095-3628issn
1432-184Xpii
10.1007/s00248-017-0967-1journal_volume
74pub_type
杂志文章abstract：:With this study, we present first data on the diversity of aerobic methanotrophic bacteria (MOB) in an Arctic permafrost active layer soil of the Lena Delta, Siberia. Applying denaturing gradient gel electrophoresis and cloning of 16S ribosomal ribonucleic acid (rRNA) and pmoA gene fragments of active layer samples, w...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-008-9411-x
更新日期：2009-01-01 00:00:00
abstract：:It is suspected that phagotrophic marine protozoa might possess feeding receptors that enable them to discern the nutritional quality of individual prey items (during prey-handling) on the basis of their cell-surface biochemistry. This article reviews advances in our understanding of the molecular mechanisms that medi...
journal_title：Microbial ecology
pub_type： 杂志文章,评审
doi：10.1007/s00248-008-9421-8
更新日期：2009-05-01 00:00:00
abstract：:The muramic acid (MurA) assay is a powerful tool for the detection and quantification of bacteria with no need to enrich samples by culturing. However, the analysis of MurA in mixed biological and environmental matrices is potentially more complex than analysis in isolated bacterial cells. In this study, we employed o...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-008-9406-7
更新日期：2009-04-01 00:00:00
abstract：:A simple agar plating method for the description of microbial communities is described. This method is based on the quantification of the numbers of bacterial colonies in 6-7 age-based classes as they appear on agar media over a period of 6-10 days. The method can be used to quantify microbial communities in different...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF00170116
更新日期：1994-01-01 00:00:00
abstract：:Fungi play an important role in cycling organic matter and nutrients in marine ecosystems. However, the distribution of fungal communities in the ocean, especially the vertical distribution along depth in the water column, remained poorly understood. Here, we assess the depth-related distribution pattern of fungal com...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01374-y
更新日期：2019-11-01 00:00:00
abstract：:Ochreous sludge deposited in the course of aeration of ground water contained an assortment of bacterial forms and structures which were investigated by light microscopy, scanning electron microscopy, and transmission electron microscopy. Bacterial structures were often covered by iron deposition which could be remove...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02010579
更新日期：1979-03-01 00:00:00
abstract：:The community composition of arbuscular mycorrhizal fungi (AMF) was analyzed in roots of Gypsophila struthium growing in gypsum soils under semiarid conditions. In order to investigate the effect of plant community degradation on the AMF biodiversity at the single species level, on the basis of the plant community com...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-008-9438-z
更新日期：2009-05-01 00:00:00
abstract：:Streptomycetes are important members of soil microbial communities and are particularly active in the degradation of recalcitrant macromolecules and have been implicated in biological control of plant disease. Using a streptomycetes-specific polymerase chain reaction (PCR)-denaturing gradient gel electrophoresis (PCR-...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-004-0111-x
更新日期：2005-07-01 00:00:00
abstract：:The occurrence and distribution of Azorhizobium and Rhizobium strains that induce stem nodulation of Sesbania rostrata were determined in four vegetation zones in Senegal. Based on tests with 16 Rhizobium and 10 Azorhizobium strains nodulating S. rostrata, a method was devised to distinguish among the strains. In all ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF00217424
更新日期：1995-01-01 00:00:00
abstract：:Denitrifying bacteria is a driver of nitrogen removal process in wastewater treatment ecosystem. However, the geographical characteristics of denitrifying bacterial communities associated with activated sludge from diverse wastewater treatment plants (WWTPs) are still unclear. Here, quantitative PCR and next-generatio...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-018-1236-7
更新日期：2019-02-01 00:00:00
abstract：:A biflagellated protozoan was isolated from an acidic drainage stream located inside a disused pyrite mine. The stream contained copious amounts of "acid streamer" bacterial growths, and the flagellate was observed in situ apparently grazing the streamer bacteria. The protozoan was obligately acidophilic, growing betw...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF00165908
更新日期：1992-01-01 00:00:00
abstract：:By using substrate molecules of varying degrees of surface activity, we were able to measure some features of bacterial activity in the surface microlayers (SM) and in the subsurface (bulk) water. The fraction of active cells was determined by a combined microautoradiography-epifluorescence (ME) method. Measurements w...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02019021
更新日期：1983-12-01 00:00:00
abstract：:Biological soil crusts cover hundreds of hectares of sand dunes at the northern tip of Cape Cod National Seashore (Massachusetts, USA). Although the presence of crusts in this habitat has long been recognized, neither the organisms nor their ecological roles have been described. In this study, we report on the microbi...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-004-0254-9
更新日期：2004-08-01 00:00:00
abstract：:The quantitative uptake of latex beads of different sizes and of live cells by 14 species of ciliates was studied. The functional response (uptake rate as function of food particle concentration) can be fitted to a hyperbolic function and this can be explained in terms of the function of the mouth apparatus. Each spec...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02020370
更新日期：1980-03-01 00:00:00
abstract：:Although organic-aggregate-associated bacteria play a pivotal role in microbial food webs and in the cycling of major elements, their community composition and diversity have not been extensively studied, especially in shallow freshwater systems. This study is among the first to explore intra-lake horizontal heterogen...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-008-9482-8
更新日期：2009-08-01 00:00:00
abstract：:Foliar chemistry influences leaf decomposition, but little is known about how litter chemistry affects the assemblage of bacterial communities during decomposition. Here we examined relationships between initial litter chemistry and the composition of the bacterial community in a stream ecosystem. We incubated replica...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-016-0735-7
更新日期：2016-05-01 00:00:00
abstract：:The addition of ciliated protozoa to aquatic microcosms and bench-scale sewage treatment plants increases decomposition rates. This is surprising, inasmuch as protozoa consume bacteria, which are the primary decomposers. One possible mechanism of the increase in decomposition rate is the direct consumption of dissolve...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02011712
更新日期：1988-03-01 00:00:00
abstract：:Bark beetles are the most important mortality agent in coniferous forests, and pheromones play important roles in their management. Dendroctonus valens LeConte was introduced from North America to China and has killed millions of healthy pines there. Trapping with semiochemicals and pheromones was deployed in D. valen...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-015-0625-4
更新日期：2015-11-01 00:00:00
abstract：:Ribosomal RNA (rRNA) is one of the most important macromolecules in the cell. It is well established that high-temperature environmental conditions destabilize rRNA, leading to a selection for G+C-rich stabilizing structures. Our knowledge about the nucleotide composition effect of other environmental conditions, howe...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-008-9446-z
更新日期：2009-04-01 00:00:00
abstract：:The effect of carbon∶nitrogen∶phosphorus (C∶N∶P) ratio of organic substrates on the regeneration of ammonium and phosphate was investigated by growing natural assemblages of freshwater bacteria in mineral media supplemented with the simple organic C, N, and P sources (glucose, asparagine, and sodium glycerophosphate, ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02017167
更新日期：1990-05-01 00:00:00
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
更新日期：1982-12-01 00:00:00
abstract：:Methanotrophic bacteria are able to use methane (CH4) as a sole carbon and energy source. Photochemical oxidation of methane takes place in the stratosphere, whereas in the troposphere, this process is carried out by methanotrophic bacteria. On the one hand, it is known that the efficiency of biological CH4 oxidation ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-018-1248-3
更新日期：2019-04-01 00:00:00
abstract：:The source of combined nitrogen in endolithic microbial communities was studied in samples from desert localities in North and South America, the Middle East, South Africa, and Antarctica. Nitrogen fixation (acetylene reduction) seems to occur only exceptionally. Evidence suggests that, in general, the nitrogen source...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02010548
更新日期：1980-06-01 00:00:00
abstract：:Microbiota presumably plays an essential role in inhibiting pathogen colonization and in the maintenance of health in oysters, but limited data exist concerning their different growth phases and conditions. We analyzed the bacterial microbiota composition of two commercial oysters: Crassostrea gigas and Crassostrea co...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0039-5
更新日期：2012-08-01 00:00:00
abstract：:Although phototrophic microbial communities are important components of soils in arid and semi-arid ecosystems around the world, the knowledge of their taxonomic composition and dependency on soil chemistry and vegetation is still fragmentary. We studied the abundance and the diversity of cyanobacteria and eukaryotic ...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-011-9878-8
更新日期：2011-08-01 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
pub_type： 杂志文章
doi：10.1007/s00248-002-2005-0
更新日期：2002-03-01 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
pub_type： 杂志文章
doi：10.1007/s00248-002-1001-8
更新日期：2002-07-01 00:00:00
abstract：:The relationship between groundwater geochemistry and microbial community structure can be complex and difficult to assess. We applied nonlinear and generalized linear data analysis methods to relate microbial biomarkers (phospholipids fatty acids, PLFA) to groundwater geochemical characteristics at the Shiprock urani...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-004-0137-0
更新日期：2006-02-01 00:00:00
abstract：:Ecophysiological investigations on the salinity acclimation of the cyanobacterium Prochlorothrix hollandica SAG 10.89 led to significantly revised salinity tolerance limits. Besides potential effects of cultivation techniques, clear ion composition effects mainly explain formerly described hypersensitivity to NaCl-med...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-007-9311-5
更新日期：2008-05-01 00:00:00
abstract：:Genetically engineeredErwinia carotovora persisted significantly longer in thermally perturbed microcosms (35 days) than in nonstressed microcosms (5 days). Decreased pressure of competitors and predators and increased nutrient availability were examined as the most probable reasons for greater vulnerability of pertur...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02543863
更新日期：1990-12-01 00:00:00
