Ecology of stem-nodulating Rhizobium and Azorhizobium in four vegetation zones of Senegal [0.03%]
塞内加尔四个植被带中茎根瘤菌和固氮螺菌的生态学特征
B K Robertson,B Dreyfus,M Alexander
B K Robertson
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 nodulat...
[(3)H]Leucine incorporation methodology to estimate epiphytic bacterial biomass production [0.03%]
[3H]亮氨酸掺入法测定附生细菌生物量生产
S M Thomaz,R G Wetzel
S M Thomaz
[(3)H]leucine incorporation into protein, as a method of measuring bacterial biomass production (BBP), was adapted to epiphytic bacteria. Incorporation of the isotope was saturated at concentrations higher than 400 nM. Disruption of thicker...
Flow cytometric measurements of cell volumes and DNA contents during culture of indigenous soil bacteria [0.03%]
原籍土壤细菌培养过程中的流式细胞仪体积和DNA含量测定
H Christensen,R A Olsen,L R Bakken
H Christensen
Indigenous soil bacteria were released from a clay loam soil by repeated washing and centrifugation followed by density gradient centrifugation to remove enough soil particles to allow a flow cytometric (FC) study of cell numbers, cell size...
Recovery of bdellovibrios from submerged surfaces and other aquatic habitats [0.03%]
从淹没的表面和其他水生栖境中恢复bdellovibrios菌
H N Williams,A J Schoeffield,D Guether et al.
H N Williams et al.
The distribution of bdellovibrios was investigated over a wide geographical area of the Chesapeake Bay including some tributaries and subestuaries. Bdellovibrios were recovered from five aquatic habitats; water, sediment, oyster shell surfa...
Ecophysiology of stromatolitic microbial mats, Stocking Island, exuma cays, Bahamas [0.03%]
巴哈马群岛斯特金岛结壳微生物垫的生境生理学
J Pinckney,H W Paerl,R P Reid et al.
J Pinckney et al.
Intertidal stromatolites, covered by cyanobacterial mats, were recently discovered at Stocking Island, Exuma Cays, Bahamas. Ecophysiological responses (CO2 fixation, N2 fixation, and photoacclimation) of these cyanobacterial mats to experim...
K R Chappell,R Goulder
K R Chappell
River-water extracellular-enzyme activity in the lowland Rivers Ouse and Derwent, northeast England, had much in common. In both rivers, the mean enzyme activities over 15 months differed in the following order: leucine aminopeptidase > pho...
The detection of fish pathogenVibrio anguillarum in water and fish using a species-specific DNA probe combined with membrane filtration [0.03%]
结合膜过滤法利用种特异DNA探针检测水和鱼类中的鱼致病菌豚鼠伤寒杆菌变异生物型(Vibriosan-guearum)
J L Powell,M W Loutit
J L Powell
The marine bacteriumVibrio anguillarum causes disease in fish worldwide and is particularly devastating in aquaculture. Little is known about the ecology ofV. anguillarum in the environment and how this may relate to the pathogenicity of th...
Development of a DNA probe using differential hybridization to detect the fish pathogenVibrio anguillarum [0.03%]
利用差异杂交技术研制克氏弧菌的DNA探针
J L Powell,M W Loutit
J L Powell
The fish pathogenVibrio anguillarum causes significant economic losses in commercially cultured fish species worldwide. At present, identification ofV. anguillarum requires conventional isolation and culturing techniques. Using differential...
Factors influencing the abundance and metabolic capacities of microorganisms in Eastern Coastal Plain sediments [0.03%]
影响东部沿海平原沉积物中微生物丰度和代谢能力的因素
T J Phelps,S M Pfiffner,K A Sargent et al.
T J Phelps et al.
The abundance and metabolic capacities of microorganisms residing in 49 sediment samples from 4 boreholes in Atlantic Coastal Plain sediments were examined. Radiolabeled time-course experiments assessing in situ mirobial capacities were ini...
Comparison between geochemical and biological estimates of subsurface microbial activities [0.03%]
基于地球化学和生物学的地下微生物活性估算比较
T J Phelps,E M Murphy,S M Pfiffner et al.
T J Phelps et al.
Geochemical and biological estimates of in situ microbial activities were compared from the aerobic and microaerophilic sediments of the Atlantic Coastal Plain. Radioisotope time-course experiments suggested oxidation rates greater than mil...