Does microbial biomass affect pelagic ecosystem efficiency? An experimental study [0.03%]
微生质影响浮游生态系统效率吗？一项实验研究
J D Wehr,J Le,L Campbell
J D Wehr
Bacteria and other microorganisms in the pelagic zone participate in the recycling of organic matter and nutrients within the water column. The microbial loop is thought to enhance ecosystem efficiency through rapid recycling and reduced si...
Effect of Trichoderma on plant growth: A balance between inhibition and growth promotion [0.03%]
木霉菌对植物生长的影响：抑制与促进的平衡关系
M A Ousley,J M Lynch,J M Whipps
M A Ousley
The effect of lettuce (Latuca sativa L.) germination and growth in nonsterilized potting compost of 0.1% and 1.0% w/w incorporation of fermenter biomass inocula of six strains of Trichoderma was investigated. Except for strains WT and T35 a...
L Rodrigue,M J Barras,H Marcotte et al.
L Rodrigue et al.
The acquisition of the human oral bacterial flora follows a relatively well known sequence of succession that can be influenced by various host factors. These factors have not been studied in the mouse. In the present work, we followed the ...
Immunofluorescence assay for effects on field abundance of a naturally occurring pseudomonad during passage through the gut of a marine deposit feeder, Abarenicola pacifica [0.03%]
一种海洋底栖动物Abarenicola pacifica肠道中天然存在的假单胞菌的荧光抗体检测及其丰度变化
C Plante,P Jumars
C Plante
In a seasonal study we used immunofluorescence to follow a specific bacterial population, as well as total numbers, through the fore-, mid-, and hindgut of a deposit feeder, Abarenicola pacifica. We chose a pseudomonad because of its high a...
Scanning electron microscopy of the gut microflora of two earthworms: Lumbricus terrestris and Octolasion cyaneum [0.03%]
两种蚯蚓肠道菌群的扫描电镜研究：Lumbricus terrestris 和 Octolasion cyaneum
J M Jolly,H M Lappin-Scott,J M Anderson et al.
J M Jolly et al.
Scanning electron microscopy was used to investigate the presence of microorganisms, probably bacteria, on the gut surface of earthworms. The washed surfaces of the intestines of two earthworms, Lumbricus terrestris and Octolasion cyaneum, ...
M L Helander,S Neuvonen,T Sieber et al.
M L Helander et al.
Endophytes were frequently isolated from mountain birch (Betula pubescens var. tortuosa (Ledeb.) Nyman) leaves at a subarctic site where natural air pollution is low. We tested whether simulated acid rain had any influence on the occurrence...
n-Alkane dissimilation by Rhodopseudomonas sphaeroides transferred OCT plasmid [0.03%]
Rhodopseudomonas sphaeroides转接OCT质粒的长链烷烃降解研究
M H Lee,M O Hwang,S Y Choi et al.
M H Lee et al.
The OCT plasmid from Pseudomonas maltophilia N246-1 was transferred to Rhodopseudomonas sphaeroides M1 with very low frequency (1.4-1.9 × 10(-5) per recipient cell at pH 7-8 for a 3-hour reaction time). P. maltophilia N246-1 was able to ut...
Bacterial production in a mesohumic lake estimated from [(14)C]leucine incorporation rate [0.03%]
用亮氨酸掺入法估算盖层湖中细菌生物量生产率
T Tulonen
T Tulonen
Incorporation of [(14)C]leucine into proteins of bacteria was studied in a temperate mesohumic lake. The maximum incorporation of [(14)C] leucine was reached at a concentration of 30 nM determined in dilution cultures. Growth experiments we...
Between-site comparison of freshwater bacterioplankton by DNA hybridization [0.03%]
用于淡水细菌浮游生物的菌株间比较的DNA杂交法
D L Lambert,P N Taylor,R Goulder
D L Lambert
Natural assemblages of freshwater bacterioplankton in enriched lowland rivers had greater cell-specific metabolic activity than those in gravel-pit ponds. Similarly, cell-specific activity and mean cell Size in calcareous headstreams tended...
Characterization of chemoheterotrophic bacteria associated with the in situ bioremediation of a waste-oil contaminated site [0.03%]
与就地治理废油污染场地有关的化学异养菌的表征
P Kämpfer,M Steiof,P M Becker et al.
P Kämpfer et al.
In the course of an in situ bioremediation, different hydrologically controllable test plots were installed on the ground of a waste-oil contaminated site, and continuously injected with nutrient solution and the electron acceptors NO3 (-),...