Low temperature and Daphnia-associated infochemicals promote colony formation of Scenedesmus obliquus and its harvesting

Low temperature and Daphnia-associated infochemicals promote colony formation of Scenedesmus obliquus and its harvesting
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低温和水蚤相关信息化学物质促进斜生栅藻菌落形成及其收获

DOI:
10.1007/s10529-016-2223-z
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发表时间:
2016
影响因子:
2.7
通讯作者:
Yang Zhou
Yang Zhou
中科院分区:
工程技术4区
文献类型:
--
作者:
Zhu Xuexia;Yang Jingwen;Zhang Xingxing;Zhang Lu;Wang Xiaojun;Huang Yuan;Yang Zhou

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目的:探讨温度和水蚤相关信息化学物质对斜生栅藻菌落形成的联合影响,以利于藻类生物量的收获。结果:三参数修正高斯模型很好地拟合了任意温度下水蚤培养滤液诱导的斜生栅藻每颗粒细胞数的变化。温度降低增强了栅藻的诱导集落形成。 15-25°C 时的最大菌落大小明显大于 30-35°C 时的最大菌落大小。需要在低温下再培养1~2天才能达到最大菌落大小,这表明藻类生物量的最佳收获时间。结论:建议在15-25℃下通过水蚤培养滤液诱导栅藻菌落形成来沉降藻细胞。这种条件有利于收获生物质。
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.
氮水平和水蚤培养滤液对斜生栅藻菌落大小的综合影响
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