Bioprofile 400
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Previous studies suggest that the carbonic anhydrase of C. Furthermore, it has the advantages of fast growth and easy culture and is widely used in the production of biomass feedstock and ethanol (Choi et al. reinhardtii is a unicellular eukaryotic freshwater alga with flagella and a model species for studying the physiology and genetic mechanisms of photosynthesis (Raven and Girard-Bascou 2002). pyrenoidosa, but was not significant in C. Xia and Gao ( 2005) investigated that high CO 2 concentrations increased the Chl a/Chl b ratio in C. For instance, high concentrations of CO 2 increased the growth rate of three freshwater phytoplankton ( Chlamydomonas reinhardtii, Chlorella pyrenoidosa and Scenedesmus obliquus) (Yang and Gao 2003). Elevated CO 2 changed the FAs and AAs of C. Therefore, the impacts of increased atmospheric CO 2 on freshwater algae have attracted widespread attention. Moreover, freshwater does not have the same “bicarbonate buffering system” as seawater, so increased atmospheric CO 2 makes it easier to reduce the pH of freshwater (Stumm and Morgan 1996). Carbon dioxide combines with water to form dissolved inorganic carbon (CO 2 HCO 3 − CO 3 2−), which could change the pH of water (Hasler et al. Elevated CO 2 in the atmosphere is absorbed and dissolved in water and leads to weak acidification (Stets et al. Atmospheric CO 2 concentrations were 275 ppm before 1850, 345 ppm in 1985, and are expected to rise to about 1000 ppm by the end of the twenty-first century (Ramanathan 1988). Since the beginning of the industrial era, the atmospheric concentrations of several greenhouse gases have been increasing on account of human activities. reinhardtii could form a specific adaptive evolution to elevated CO 2, affecting future biogeochemical cycles. However, the growth and photosynthesis of cells under LT increased significantly. Integrated transcriptome and metabolome analyses demonstrated that the nutritional constituents (FAs, AAs) under LT were poor compared with CK, and most genes and metabolites involved in C and N metabolism were significantly downregulated. There was a global downregulation of genes involved in photosynthesis, glycolysis, lipid metabolism, and nitrogen metabolism but increase in the TCA cycle and β-oxidation under LT.
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However, metabolic analysis indicated that fatty acids (FAs) and partial amino acids (AAs) were increased under ST. The transcriptomic data showed moderate changes between ST and CK. The main aim of our study was to explore the responses of Chlamydomonas reinhardtii (Chlorophyceae) to elevated CO 2 by combined transcriptome and metabolome analysis under three different scenarios: control (CK, 400 ppm), short-term elevated CO 2 (ST, 1000 ppm), and long-term elevated CO 2 (LT, 1000 ppm). EquipNet carries a range of used Siemens chemistry analyzers, including the Siemens Advia 1650, Centaur CP, Dimension Xpand and others.With atmospheric CO 2 increasing, a large amount of CO 2 is absorbed by oceans and lakes, which changes the carbonate system and affects the survival of aquatic plants, especially microalgae. Siemens chemistry analyzers are recognized for its efficiency, reliability and accuracy, ensuring an ideal solution for a number of needs. Siemens is a leading global provider and manufacturer of various equipment for the automotive, chemicals, food, beverage, healthcare, oil, gas, pharmaceutical, and other industries.
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We can also source the right tooling and change parts that you need through our huge network of corporate clients from around the globe. If you do not see the used chemistry analyzers you are looking for, call one of our representatives and we will find it for you. Our inventory is constantly changing, but we carry various manufacturers, including Siemens, Beckman Coulter, Advia, Roche Instruments, Applikon, and many others. Our exclusive contracts with our clients yield a wide range of used chemistry analyzers from a number of respected OEMs. EquipNet is the world's leading provider of used chemistry analyzers and various other preowned analytical equipment.