Abstract：
:A significant number of viable colony-forming bacteria were recovered from deep-ocean bottom water samples passed through a 0.45μm filter. However, these bacteria small enough to pass through a 0.45μm membrane filter and termed "filterable bacteria" were less abundant in open-ocean surface water and coastal water samples. The reduced size of bacterial cells present in deep-ocean bottom water samples was documented by scanning electron microscopy. The concentration of ATP in the water samples was found to be correlated with results of direct counts of bacteria.Numerical taxonomy of bacterial strains isolated from water samples collected at two stations in the deep sea yielded taxonomic clusters grouped according to sample and size fraction. The generic composition of bacterial populations of bottom water filtrates was compared with that of bacteria retained by 0.45μ m filters. Strains ofAlcaligenes, Flavobacterium, Pseudomonas, andVibrio spp. were identified among those retained by, as well as passing through, 0.45μm filters.Two marine isolates obtained from the filtrate of a deep-ocean water sample were incubated for 9 weeks in nutrient-free artificial seawater, during which the cells became rounded and reduced in size. After the 9-week incubation period, more than 10% of the viable cells of both cultures were able to pass through a 0.4μm filter. The viable count at 9 weeks wasca. 10% of that of the initial population, although from direct counts the total population number remained relatively constant throughout the incubation period. From the observed reduction in cell size and increased starvation resistance of cells held under low nutrient conditions, it is concluded that a significant relationship exists between decreased cell size and increased survival of marine bacteria in the deep sea.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Tabor PS,Ohwada K,Colwell RRdoi
10.1007/BF02010479subject
Has Abstractpub_date
1981-03-01 00:00:00pages
67-83issue
1eissn
0095-3628issn
1432-184Xjournal_volume
7pub_type
杂志文章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
pub_type： 杂志文章
doi：10.1007/s002480000063
更新日期：2001-02-01 00:00:00
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
更新日期：2015-04-01 00:00:00
abstract：:Chilas and Hunza areas, located in the Main Mantle Thrust and Main Karakoram Thrust of the Himalayas, host a range of geochemically diverse hot springs. This Himalayan geothermal region encompassed hot springs ranging in temperature from 60 to 95 °C, in pH from 6.2 to 9.4, and in mineralogy from bicarbonates (Tato Fie...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-0930-1
更新日期：2017-07-01 00:00:00
abstract：:Heterotrophic bacteria are, in many aquatic systems, reliant on autochthonous organic carbon as their energy source. One exception is low-productive humic lakes, where allochthonous dissolved organic matter (ADOM) is the major driver. We hypothesized that bacterial production (BP) is similarly regulated in subarctic e...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-015-0714-4
更新日期：2016-05-01 00:00:00
abstract：:Understanding the role of microbiota as reproductive barriers or sources of adaptive novelty in the fundamental biological phenomenon of speciation is an exciting new challenge necessitating exploration of microbiota variation in wild interbreeding species. We focused on two interbreeding cyprinid species, Chondrostom...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-1077-9
更新日期：2018-04-01 00:00:00
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
更新日期：2013-04-01 00:00:00
abstract：:Abstract In this study, two different agricultural soils were investigated: one organic soil and one sandy soil, from Stend (south of Bergen), Norway. The sandy soil was a field frequently tilled and subjected to crop rotations. The organic soil was permanent grazing land, infrequently tilled. Our objective was to com...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s002489900117
更新日期：1998-11-01 00:00:00
abstract：:More than 50% of all anthropogenic N2O emissions come from the soil. Drained Histosols that are used for agricultural purposes are particularly potent sources of denitrification due to higher stocks of organic matter and fertiliser application. However, conditions that favour denitrification can vary considerably acro...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-0991-1
更新日期：2017-11-01 00:00:00
abstract：:Arsenic (As) and antimony (Sb) are both toxic metalloids that are of primary concern for human health. Mining activity has introduced elevated levels of arsenic and antimony into the rivers and has increased the risks of drinking water contamination in China. Due to their mobility, the majority of the metalloids origi...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01327-5
更新日期：2019-10-01 00:00:00
abstract：:Many sponges host abundant and active microbial communities that may play a role in the uptake of dissolved organic matter (DOM) by the sponge holobiont, although the mechanism of DOM uptake and metabolism is uncertain. Bulk and compound-specific isotopic analysis of whole sponge, isolated sponge cells, and isolated s...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-019-01410-x
更新日期：2020-02-01 00:00:00
abstract：:The predatory activity of bdellovibrios is affected by various environmental pollutants such as detergents, heavy metals, and pesticides. This was shown in a two-membered system ofBdellovibrio andPhotobacterium, in which the effect of the predator on the bioluminescence of the prey indicated the activity of the former...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02032492
更新日期：1981-06-01 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：:Soil contamination with heavy metals is a widespread problem, especially prominent on grounds lying in the vicinity of mines, smelters, and other industrial facilities. Many such areas are located in Southern Poland; they are polluted mainly with Pb, Zn, Cd, or Cu, and locally also with Cr. As for now, little is known...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-013-0344-7
更新日期：2014-04-01 00:00:00
abstract：:Pseudomonas fluorescens strains are used in agriculture as plant growth-promoting rhizobacteria (PGPR). Nontarget effects of released organisms should be analyzed prior to their large-scale use, and methods should be available to sensitively detect possible changes in the environments the organism is released to. Acco...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-009-9489-9
更新日期：2009-05-01 00:00:00
abstract：:The response of microbial communities to disturbance is a major concern for microbial ecologists since potential modifications in their composition and functioning may affect ecosystems to a larger extent. Microbial ecosystems may be resistant (not affected) or may present engineering (return to initial state) or ecol...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-014-0532-0
更新日期：2015-07-01 00:00:00
abstract：:In this work, we studied the ecological interactions between grape berry microorganisms and Drosophila sp. flies involved in sour rot disease during grape ripening. After veráison the total microbial counts of grape berries affected by sour rot increased from about 2 log CFU/g of berries to more than 7 log CFU/g. Berr...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0041-y
更新日期：2012-08-01 00:00:00
abstract：:Endophytes are microbial symbionts living inside plants and have been extensively researched in recent decades for their functions associated with plant responses to environmental stress. We conducted a meta-analysis of endophyte effects on host plants' growth and fitness in response to three abiotic stress factors: d...
journal_title：Microbial ecology
pub_type： 杂志文章,meta分析
doi：10.1007/s00248-017-1054-3
更新日期：2018-02-01 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：:Thymidine incorporation into DNA is widely used to estimate rates of bacterial growth and secondary production in aquatic systems. The procedure requires the use of several conversion factors and assumptions to convert rates of thymidine uptake to rates of carbon production. Perhaps the most controversial of the conve...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF00177190
更新日期：1993-03-01 00:00:00
abstract：:Members of the ant tribe Camponotini have coevolved with Blochmannia, an obligate intracellular bacterial mutualist. This endosymbiont lives within host bacteriocyte cells that line the ant midgut, undergoes maternal transmission from host queens to offspring, and contributes to host nutrition via nitrogen recycling a...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-013-0264-6
更新日期：2013-10-01 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
pub_type： 杂志文章
doi：10.1007/s002489900127
更新日期：1999-01-01 00:00:00
abstract：:The hypothesis tested in this present study was that the ectomycorrhizosphere effect on the bacterial community was not root-growth-dependent. The impacts of ectomycorrhizal infection (Pisolithus albus COI007) and a chemical fertilization to reproduce the fungal effect on root growth were examined on (1) the structure...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-004-0229-x
更新日期：2005-10-01 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
pub_type： 杂志文章
doi：10.1007/s002480000095
更新日期：2001-02-01 00:00:00
abstract：:Pathogenic and protective roles have been attributed to gut commensal microbiota (GCM) in gastrointestinal inflammatory and functional disorders. We have shown that the adaptation to a new environment implies specific changes in the composition of GCM. Here we assessed if environment-related adaptive changes of GCM mo...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-013-0241-0
更新日期：2013-07-01 00:00:00
abstract：:The digestive tract of animals harbors microbiota important for the host's fitness and performance. The interaction between digestive tract bacteria and soil animal hosts is still poorly explored despite the importance of soil fauna for ecosystem processes. In this study, we investigated the interactions between the b...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-020-01656-w
更新日期：2021-01-09 00:00:00
abstract：:The recovery of bdellovibrios from estuarine sediments over an annual cycle was studied. Greater numbers of the predators were recovered in sediment than in the water column. Increases in the number of bdellovibrios recovered from sediment over various periods of time suggest that multiplication of the predators occur...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02012949
更新日期：1988-01-01 00:00:00
abstract：:Nitrogen (N) is one of the most common limiting nutrients for primary production in terrestrial ecosystems. Soil microbes transform organic N into inorganic N, which is available to plants, but soil microbe activity in drylands is sometimes critically suppressed by environmental factors, such as low soil substrate ava...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-017-1090-z
更新日期：2018-05-01 00:00:00
abstract：:Marine sponges often harbor photosynthetic symbionts that may enhance host metabolism and ecological success, yet little is known about the factors that structure the diversity, specificity, and nature of these relationships. Here, we characterized the cyanobacterial symbionts in two congeneric and sympatric host spon...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-012-0047-5
更新日期：2012-10-01 00:00:00
abstract：:Seven known species of rumen ciliates and mixedEntodinium spp. showed association with plant particles in rumen fluid in vitro. Association was greater with fresh particles than with hay, and substantially decreased when the water-soluble components of the particles were removed, suggesting that the water-soluble comp...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02015109
更新日期：1985-03-01 00:00:00
abstract：:Two annual Baltic Sea phytoplankton blooms occur in spring and summer. The bloom intensity is determined by nutrient concentrations in the water, while the period depends on weather conditions. During the course of the bloom, dead cells sink to the sediment where their degradation consumes oxygen to create hypoxic zon...
journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-018-1229-6
更新日期：2019-02-01 00:00:00
