欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
研究了不同实验条件下,含钾矿粉对胶质芽孢杆菌（Bacillus mucilaginosus）分泌胞外多糖的影响,以进一步揭示细菌与矿物的相互作用机理。实验分别采用无矿（不加含钾矿粉）无钾（不含可溶性钾）、无矿有钾（有可溶性钾）、有矿（100mL培养液加0.3g含钾矿粉）无钾及有矿有钾4组培养基培养胶质芽孢杆菌,进行产胞外多糖的分析比较。研究发现,在有钾长石粉但不含钾离子的培养条件下,胶质芽孢杆菌产生的多糖和蛋白质含量最高;在既有钾矿粉又有可溶性钾离子存在的培养条件下,菌体产生的蛋白质和胞外多糖含量稍低;在无钾矿粉的条件下,无论有没有钾离子的两种培养基中,蛋白质和多糖含量都很低。研究结果表明,有无钾矿粉的不同培养条件能够引起胶质芽孢杆菌分泌胞外多糖的单糖组成成分产生明显差异,胶质芽孢杆菌胞外分泌物与细菌对含钾矿粉中钾的利用密切相关。
英文摘要：
Under different conditions, effects of mineral powder containing potassium on the exo-polysaccharides （EPS） secreted by Bacillus mucilaginosus were studied to further explain the reciprocity between bacteria and potassium-baring minerals. In the research, B. mucilaginosus was cultured in four kinds of media to analyze and compare their EPS production. Results showed that bacteria secreted the highest output of both proteins and EPS in the culture with potassium-bearing minerals, but without potassium ion. While in the medium with potassium ion, the yielded EPS were lower. However, in the medium without potassium beaing mineral powder and with or without potassium ion, the production of both proteins and EPS was proved to be the lowest. List of monosaccharide components of EPS secreted by B. mucilaginosus varied obviously in relation with different culture conditions. The results demonstrated that extracellular secretion of the bacteria is closely related to the mechanism of potassium releasing.
同期刊论文项目
同项目期刊论文
Thallium at the interface of soil and green cabbage (Brassica oleracea L. var. capitata L.): Soil&nd
High cadmium concentration in soil in the Three Gorges region: Geogenic source and potential bioavai
Low-level maternal methylmercury exposure through rice ingestion and potential implications for offs
Environment and genotype controls on mercury accumulation in rice (Oryza sativa L.) cultivated along
Distinguishing ectomycorrhizal and saprophytic fungi using carbon and nitrogen isotopic compositions
Endolithic Bacterial Communities in Dolomite and Limestone Rocks from the Nanjiang Canyon in Guizhou
Accumulation of trace elements in paddy topsoil of the Wudang County, Southwest China: parent materi
Elemental and strontium isotopic geochemistry of the soil profiles developed on limestone and sandst
Diversity of endolithic fungal communities in dolomite and limestone rocks from Nanjiang Canyon in G
Degradation of Potassium Rock by Earthworms and Responses of Bacterial Communities in Its Gut and Su
Silicon isotope composition of diatoms as a paleoenvironmental proxy in Lake Huguangyan, South China
Physiological and isotopic signals in epilithic mosses for indicating anthropogenic sulfur on the ur
Acid rain and alkalization in southwestern China: chemical and strontium isotope evidence in rainwat
Use of rare earth element patterns to trace the provenance of the atmospheric dust near Beijing, Chi
Sulfur isotopic signatures in rainwater and moss Haplocladium microphyllum indicating atmospheric su
Nitrogen isotope variations in camphor (Cinnamomum Camphora) leaves of different ages in upper and l
Dual N and O isotopes of nitrate in natural plants: first insights into individual variability and o
Ammonium first: natural mosses prefer atmospheric ammonium but vary utilization of dissolved organic
Diurnal variations of pCO2 in relation to environmentalfactors in the cascade reservoirs along the W
The impact of land use and land cover changes on solute dynamics in seepage water of soil from karst
Lead, Zinc, and Cadmium in Vegetable/Crops in a Zinc Smelting Region and its Potential Human Toxicit
Identification of dissolved sulfate sources and the role of sulfuric acid in carbonate weathering us
Nitrogen and oxygen isotope effects of tissue nitrate associated with nitrate acquisition and utilis
Isotope compositions of dissolved lithium in the rivers Jinshajiang, Lancangjiang, and Nujiang: Impl
Mercury isotope variations between bioavailable mercury fractions and total mercury in mercury conta
Iron isotope fractionation during biogeochemical cycle: Information from suspended particulate matte
Iron Isotope Compositions of Natural River and Lake Samples in the Karst Area, Guizhou Province, Sou
Indicating atmospheric sulfur by means of S-isotope in leaves of the plane, osmanthus and camphor tr
Assessment of the Sources of Nitrate in the Changjiang River, China Using a Nitrogen and Oxygen Isot
Assessment of atmospheric sulfur with the epilithic moss Haplocladium microphyllum: Evidences from t
Synchronous variations of precipitation and temperature at Lake Qinghai, NE Tibetan Plateau during t
Mosses indicating atmospheric nitrogen deposition and sources in the Yangtze River drainage basin, C
Geochemistry of dissolved inorganic carbon and carbonate weathering in a small typical karstic catch
Chemical and strontium isotope characterization of rainwater in karst virgin forest, Southwes China.
Rare earth elements patterns in the karst terrain in Guizhou Province, China: Implication for water/
Stable sulphur and nitrogen isotopes of the moss Haplocladium microphyllum at urban, rural and fores
Sulfur isotopic composition and source identification of atmospheric environment in central Zhejiang
Hydrogenchemistry and dissolved inorganic carbon isotopic composition on karst groundwater in Maolan
Atmospheric total gaseous mercury (TGM) concentrations and wet and dry deposition of mercury at a hi
Elevated atmospheric deposition and dynamics of mercury in a remote upland forest of Southwestern Ch
Continuous degradation of 2-naphthol and its metabolites by coupling Aspergillus niger with Bacillus
Fe isotope compositions of natural river and lake samples in Karst area, Guizhou province, SW China.
Seasonal variations of sulfur isotopic compositions of dissolved SO42-in Aha Lake, Guiyang and their
Anthropogenic Inputs of Boron into Urban Atmospheric Environment: Evidence from Boron Isotopes of Pr
期刊信息
位置：