Growth and silica content of the diatoms Thalassiosira weissflogii and Navicula salinarum at different salinities and enrichments with aluminium
Growth and silica content of the diatoms Thalassiosira weissflogii and Navicula salinarum at different salinities and enrichments with aluminium
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DOI：
10.1080/09670269910001736362
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发表时间：
1999-08
影响因子：
2.4
通讯作者：
E. G. Vrieling;L. Poort;T. P. Beelen;W. Gieskes
中科院分区：
文献类型：
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作者：
E. G. Vrieling;L. Poort;T. P. Beelen;W. Gieskes
的依赖性的细胞（生物）和硅藻硅藻盐藻和海链藻的盐度和铝的条件下，硅藻相关（矿化）二氧化硅含量进行了研究，以使它能够操纵硅化在体外，并最大限度地提高它的物理化学硅藻壳表征所需的水平，通过物理吸附，X-射线散射分析和NMR，这是我们的最终目标。AlCl 3的富集增加了羽状N的生长和最终的细胞密度。salinarum，而不是中心种T. weissflopper.铝的加入并没有，但是，导致每个细胞的生物或矿化二氧化硅含量的显着增加，并不能检测到硅壳的二氧化硅基质。与此相反，降低盐度从28个实际盐度单位（PSU）到20和15导致在两个物种的每个细胞的生物硅含量显着增加，这是符合的化学降解的密度增加。
The dependence of the cellular (biogenic) and frustule-associated (mineralized) silica content of the diatoms Navicula salinarum and Thalassiosira weissflogii on salinity and aluminium conditions was studied in order to make it possible to manipulate silicification in vitro and maximize it to levels required for physico-chemical frustule characterization by physisorption, X-ray scattering analysis and NMR, which is our ultimate objective. Enrichments with AlCl3 increased growth and the final cell density of the pennate N. salinarum, but not of the centric species T. weissflogii. Aluminium additions did not, however, result in a significant increase in the biogenic or mineralized silica content per cell and could not be detected in the silica matrix of the frustule. In contrast, lowering the salinity from 28 practical salinity units (PSU) to 20 and 15 resulted in a significant increase in the biogenic silica content per cell of both species, which is in line with an increase in density of the chemically de...