Department of Oceanography, Pukyong National University, 45 Yongso-ro, Nam-Gu, Busan 608-737, Republic of Korea.
Bioresour Technol. 2013 Feb;129:387-95. doi: 10.1016/j.biortech.2012.11.078. Epub 2012 Nov 28.
In the present study, the effect of monochromatic light (blue, yellow and red) and mixed wavelength on the nutrient uptake and growth kinetics of benthic microalgae Achnanthes sp., Amphora sp., Navicula sp. and Nitzschia sp. were investigated. The maximum uptake rate (ρmax) for nitrate and phosphate obtained by short-term experiments were high in the order of blue, mixed, red, yellow wavelength, and among the 4 benthic microalgae, Nitzschia sp. was the highest ρmax. The half-saturation constant (Ks) was higher than other taxon. The specific maximum growth rate (μmax') and minimum cell quota (q0) for the nitrogen and phosphorus-limited condition, Nitzschia sp. showed the highest μmax' and q0 values among the 4 benthic microalgae. These results suggest that the benthic microalgae are adapted to high nutrient concentration. In particular, Nitzschia sp., which have a higher capability of storage and uptake, may be a useful species for phytoremediation.
在本研究中，研究了单色光（蓝、黄、红）和混合波长对底栖微藻 Achnanthes sp.、Amphora sp.、Navicula sp. 和 Nitzschia sp. 的养分吸收和生长动力学的影响。短期实验得出的硝酸盐和磷酸盐最大吸收速率（ρmax）按蓝、混合、红、黄波长的顺序较高，在 4 种底栖微藻中，Nitzschia sp. 的 ρmax 最高。半饱和常数（Ks）高于其他分类群。在氮磷限制条件下的特定最大生长速率（μmax'）和最小细胞量（q0），Nitzschia sp. 在 4 种底栖微藻中表现出最高的 μmax'和 q0 值。这些结果表明，底栖微藻适应于高养分浓度。特别是具有更高存储和吸收能力的 Nitzschia sp.，可能是用于植物修复的有用物种。
