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基于三角褐指藻全基因组假基因的识别及相关生物信息学分析
三角褐指藻 假基因 假基因片段 生物信息学分析
2013/8/14
假基因是与功能基因序列相似, 但不能表达为功能蛋白质的DNA序列. 识别和注释假基因是认识基因组的结构功能的关键. 三角褐指藻属于海洋硅藻, 富含不饱和脂肪酸, 目前其全基因组信息已经解析. 为了识别三角褐指藻基因组中的假基因, 本研究采用生物信息学的方法构建了从三角褐指藻的基因组中寻找假基因的流程, 得到1654条加工假基因、714条非加工假基因和4729条假基因片段. 结果表明, 尽管三角褐指...
The spectral slope coefficient of chromophoric dissolved organic matter (S275–295) as a tracer of terrigenous dissolved organic carbon in river-influenced ocean margins
The spectral slope coefficient chromophoric dissolved organic matter S275–295 tracer of terrigenous dissolved organic carbon river-influenced ocean margins
2014/4/4
The present study demonstrates that the spectral slope coefficient of chromophoric dissolved organic matter (CDOM) between 275 nm and 295 nm (S275–295) can be used as a tracer of the percent terrigeno...
Dissolved carbon dioxide concentration controls baseline stable carbon isotope signatures of a lake food web
Dissolved carbon dioxide concentration controls baseline stable carbon isotope signatures a lake food web
2014/4/4
Temporal variation in the baseline stable carbon isotope (δ13C) value of a well-studied, productive lake was examined over a 26-yr period using archived samples of the herbivorous zooplankter Daphnia ...
Floodplain influence on dissolved organic matter composition and export from the Mississippi–Atchafalaya River system to the Gulf of Mexico
Floodplain influence dissolved organic matter composition export from the Mississippi–Atchafalaya River system Gulf of Mexico
2014/4/4
Comparisons of the concentrations and compositions of dissolved organic matter (DOM) between the lower Mississippi River (MR) and its distributary, the Atchafalaya River (AR), indicated a strong influ...
Discharge of dissolved black carbon from a fire-affected intertidal system
Discharge of dissolved black carbon from a fire-affected intertidal system
2014/4/4
We report substantial tidal fluxes of dissolved black carbon (DBC) in a fire-affected marsh in the northern Gulf of Mexico. DBC was molecularly determined as benzenepolycarboxylic acids in a tidal cre...
Spatial distribution of intact polar lipids in North Sea surface waters: Relationship with environmental conditions and microbial community composition
Spatial distribution intact polar lipids North Sea surface waters Relationship with environmental conditions microbial community composition
2014/4/4
We characterized and quantified the intact polar lipid (IPL) composition of the surface waters of the North Sea and investigated its relationships with environmental conditions, microbial abundances, ...
Seasonal change in microbial sulfur cycling in monomictic Lake Fukami-ike, Japan
Seasonal change microbial sulfur cycling monomictic Lake Fukami-ike Japan
2014/4/4
Sulfur budgets and seasonal progression of sulfur cycling processes were investigated in Lake Fukami-ike, a small monomictic lake in Japan. The sulfur isotopic mass balance shows that the main sulfur ...
Basin-scale inputs of cobalt, iron, and manganese from the Benguela-Angola front to the South Atlantic Ocean
Basin-scale inputs of cobalt, iron manganese Benguela-Angola South Atlantic Ocean
2014/4/4
We present full-depth zonal sections of total dissolved cobalt, iron, manganese, and labile cobalt from the South Atlantic Ocean. A basin-scale plume from the African coast appeared to be a major sour...
Grazing resistance allows bloom formation and may explain invasion success of Gonyostomum semen
Grazing resistance allows bloom formation may explain invasion success Gonyostomum semen
2014/4/4
The nuisance alga Gonyostomum semen (Raphidophyceae) has expanded in the Nordic countries during the last decades and can dominate lake phytoplankton communities almost completely. A possible explanat...
Characterization of the key pathways of dissimilatory nitrate reduction and their response to complex organic substrates in hyporheic sediments
Characterization of the key pathways dissimilatory nitrate reduction their response to complex organic substrates hyporheic sediments
2014/4/4
Laboratory incubations with river-bed sediment collected from riffles and pools were used to quantify potential pathways of dissimilatory nitrate reduction in the hyporheic zone of a groundwater-fed r...
Basin-scale inputs of cobalt, iron, and manganese from the Benguela-Angola front to the South Atlantic Ocean
Basin-scale inputs of cobalt iron manganese the Benguela-Angola front the South Atlantic Ocean
2014/4/3
We present full-depth zonal sections of total dissolved cobalt, iron, manganese, and labile cobalt from the South Atlantic Ocean. A basin-scale plume from the African coast appeared to be a major sour...
Hypersaline waters pose new challenges for reconstructing environmental histories of fish based on otolith chemistry
Hypersaline waters new challenges reconstructing environmental histories fish based on otolith chemistry
2014/4/3
We investigated the effect of hypersaline conditions on the water chemistry of the Coorong Lagoon, the terminal estuary of Australia’s largest river, and the otolith chemistry of a common fish within ...
以天津滨海地区北大港水库为研究对象,采用室内柱试验,研究地下咸水与水库水体交换过程中不同位置沉积物胶体释放以及盐分释放/截留的动态特征,同时对沉积物胶体释放、盐分释放/截留机理进行了探讨。研究结果表明:水库不同位置地下咸水与水库水体交换过程中,盐分的归宿不同:接近水库入口处的沉积物能将盐分截留下来,而出水口沉积物却将盐分释放转移到水体。随孔隙体积数的增加,沉积物胶体累计释放量逐渐增加,入库口、库中...
Methyl mercury dynamics in a tidal wetland quantified using in situ optical measurements
Methyl mercury dynamics a tidal wetland quantified in situ optical measurements
2014/4/8
We assessed monomethylmercury (MeHg) dynamics in a tidal wetland over three seasons using a novel method that employs a combination of in situ optical measurements as concentration proxies. MeHg conce...
Temperature- and cholesterol-induced changes in eicosapentaenoic acid limitation of Daphnia magnadetermined by a promising method to estimate growth saturation thresholds
Temperature cholesterol-induced changes in eicosapentaenoic acid limitation Daphnia magnadetermined a promising method estimate growth saturation thresholds
2014/4/8
We present data on eicosapentaenoic acid (EPA)-limited growth responses ofDaphnia magnaunder different temperatures and different dietary cholesterol availabilities to assess how EPA growth saturation...
