低温和与水蚤相关的信息化学物质促进斜生栅藻的群体形成及其收获。
Low temperature and Daphnia-associated infochemicals promote colony formation of Scenedesmus obliquus and its harvesting.
作者信息
Zhu Xuexia, Yang Jingwen, Zhang Xingxing, Zhang Lu, Wang Xiaojun, Huang Yuan, Yang Zhou
机构信息
Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological SciencesNanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
出版信息
Biotechnol Lett. 2017 Jan;39(1):85-90. doi: 10.1007/s10529-016-2223-z. Epub 2016 Sep 21.
OBJECTIVE
To explore the combined effects of temperature and Daphnia-associated infochemicals on colony formation of Scenedesmus obliquus to faciliate harvesting the algal biomass.
RESULTS
A three-parameter modified Gaussian model fitted the changes of the number of cells per particle in S. obliquus induced by Daphnia culture filtrate well under any temperature. Decreases in temperature enhanced the induced-colony formation of Scenedesmus. The maximum colony size at 15-25 °C was significantly larger than those at 30-35 °C. An additional 1 or 2 days at low temperature was needed to reach the maximum colony size, which indicates the best harvest time for algal biomass.
CONCLUSION
Induced-colony formation of Scenedesmus by Daphnia culture filtrate at 15-25 °C is recommended to settle algal cells. This condition facilitates harvesting the biomass.
目的
探究温度与水蚤相关信息化学物质对斜生栅藻群体形成的联合影响，以促进藻类生物质的收获。
结果
三参数修正高斯模型能很好地拟合在任何温度下水蚤培养滤液诱导的斜生栅藻中每个颗粒细胞数的变化。温度降低增强了斜生栅藻的诱导群体形成。15 - 25°C时的最大群体大小显著大于30 - 35°C时的。在低温下还需要额外1或2天才能达到最大群体大小，这表明了藻类生物质的最佳收获时间。
结论
建议在15 - 25°C下用水蚤培养滤液诱导斜生栅藻形成群体以沉降藻细胞。这种条件有利于收获生物质。
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