Copper resistance in Anabaena variabilis: Effects of phosphate nutrition and polyphosphate bodies [0.03%]
变磷酸营养和多聚磷酸体对鱼腥藻铜抗性的影响
F Hashemi,G G Leppard,D J Kushnert
F Hashemi
A copper-resistant Anabaena variabilis strain was obtained after repeated culturing in progressively higher concentrations of Cu(NO3)2. This strain maintained its resistance even after a year of repeated subculturing in copper-free medium. ...
Influence of phytoplankton lysis or grazing on bacterial metabolism and trophic relationships [0.03%]
浮植藻细胞裂解或被捕食对细菌代谢和营养关系的影响
F Van Wambeke
F Van Wambeke
Experimental microcosms were used to study the dynamics of heterotrophic bacterial populations with respect to phytoplankton loss. In a two-stage linked culture system, we artificially separated production and loss processes of a diatom Pha...
Denitrification and methane production in sediment of Hamilton Harbour (Canada) [0.03%]
加拿大汉密尔顿港沉积物中的反硝化作用和甲烷产生
R Roy,P Legendre,R Knowles et al.
R Roy et al.
Systematic sampling of 21 sites covering Hamilton Harbour (Lake Ontario, Canada) was carried out during the summer in 1990 and 1991 in order to study how well environmental factors, such as O2, NO 3 (-) , and organic carbon, and the spatial...
Fate of Pseudomonas putida after release into lake water mesocosms: Different survival mechanisms in response to environmental conditions [0.03%]
荧光假单胞菌(Pseudomonas putida) 释放到湖水生态系统中的命运：适应环境条件的不同生存机制
I Brettar,M I Ramos-Gonzalez,J L Ramos et al.
I Brettar et al.
To study the fate of Pseudomonas putida DSM 3931 in an aquatic environment, cultures of the strain were released into lake water mesocosms. P. putida, bearing the TOL-plasmid, was released as a representative xenobiotic-degrading microorgan...
The use of colony development for the characterization of bacterial communities in soil and on roots [0.03%]
利用菌落发育表征土壤和根系上的细菌群落
F A De Leij,J M Whipps,J M Lynch
F A De Leij
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...
Characterization of nitrogen-fixing bacteria from a temperate saltmarsh lagoon, including isolates that produce ethane from acetylene [0.03%]
温带盐沼泻湖固氮菌的特征研究，包括能够将乙炔转化为乙烷的分离菌株
B J Tibbles,D E Rawlings
B J Tibbles
Nitrogen-fixing bacteria were isolated from sediments and water of a saltmarsh lagoon on the west coast of South Africa, and characterized according to factors that regulate nitrogen fixation in the marine environment. The majority of isola...
Effect of thermal, oxidative, acidic, osmotic, or nutritional stresses on subsequent culturability of Escherichia coli in seawater [0.03%]
热、氧化、酸、渗透或营养压力对海洋环境中大肠杆菌后续培养的影响
P M Munro,R L Clement,G N Flatau et al.
P M Munro et al.
Survival of stressed Escherichia coli with or without the rpoS gene was assessed after 2 and 6 days in sterile seawater. Cells were submitted to thermal (48°C), acidic (pH 5.1), oxidative (H2O2 1mM), nutritional (C, N, P starvation), or os...
Accumulation of organic matter along a pollution gradient: Application of odum's theory of ecosystem energetics [0.03%]
富营养化水质下有机质的积累规律——生态系统能学理论的应用研究
R Ohtonen
R Ohtonen
Forest soil biology in Scots pine forests of the Empetrum-Vaccinium type was studied around the industrialized city of Oulu, northern Finland since 1987. The forest sites lie along a sulphur and nitrogen concentration gradient in the mor hu...
K Jürgens,H Arndt,K O Rothhaupt
K Jürgens
Enclosure experiments in the mesotrophic Schöhsee in northern Germany were designed to study the impact of metazooplankton on components of the microbial food web (bacteria, flagellates, ciliates). Zooplankton was manipulated in 500-liter ...
Transmission via plants of an insect pathogenic bacterium that does not multiply or move in plants [0.03%]
无需在植物中复制或移动的昆虫致病细菌通过植物传播
A H Purcell,K G Suslow,M Klein
A H Purcell
A bacterial parasite (designated as BEV) of the leafhopper Euscelidius variegatus, which is passed transovarially to offspring, was transmitted from insect to insect via feeding of the insects in plants. The rate of bacterial infection of l...