Zhang Xiangdong, Cheng Jun, Lu Hongxiang, Chu Feifei, Xu Junchen, Wang Xuebin, Cen Kefa
State Key Laboratory of Clean Energy Utilization, Zhejiang University Hangzhou 310027 China
College of Standardization, China Jiliang University Hangzhou 310018 China.
RSC Adv. 2019 Aug 23;9(45):26495-26502. doi: 10.1039/c9ra05152j. eCollection 2019 Aug 19.
In order to promote the photosynthetic growth rate of in the presence of flue gas CO from coal-fired power plants, spermidine was first used to enhance cellular resistance to a high CO concentration (15%) and high light intensity (30 000 lux). It was found that low concentrations (100-300 μM) of spermidine significantly enhanced the photosynthetic growth rate of . The accelerated cell division decreased the cell diameter from 3.64 μm to 2.71 μm and the fractal dimension from 1.60 to 1.49, and the activity of total superoxide dismutase (T-SOD) increased from 0.48 U mL to 5.33 U mL. Expression levels of key enzymes of photosystems I and II, ATP synthase and transportase markedly increased, thereby enhancing the electron transport and energy supply that reduced oxidative damage. Finally, an enhanced cellular resistance to the high CO concentration and high light intensity increased the biomass yield from 0.11 g L to 1.71 g L (300 μM).
为了提高在燃煤电厂烟道气CO存在下的光合生长速率，首先使用亚精胺来增强细胞对高浓度CO（15%）和高光强（30000勒克斯）的抗性。结果发现，低浓度（100 - 300 μM）的亚精胺显著提高了的光合生长速率。加速的细胞分裂使细胞直径从3.64 μm降至2.71 μm，分形维数从1.60降至1.49，总超氧化物歧化酶（T-SOD）的活性从0.48 U/mL增加到5.33 U/mL。光系统I和II、ATP合酶和转运酶的关键酶表达水平显著提高，从而增强了电子传递和能量供应，减少了氧化损伤。最后，增强的细胞对高浓度CO和高光强的抗性使生物量产量从0.11 g/L增加到1.71 g/L（300 μM）。
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