Division of Biochemistry, University Station, Box 3354, University of Wyoming, Laramie, Wyoming 82070.
Plant Physiol. 1970 Aug;46(2):286-9. doi: 10.1104/pp.46.2.286.
Cyanidium caldarium was cultured at 20 and 55 C and harvested during exponential growth phase. Comparative lipid studies on each cell type show a decrease by one-half of the total lipid in cells grown at 55 C over cells grown at 20 C. While the distribution of lipid into each of five lipid classes was not influenced by high temperature (55 C), the degree of unsaturation was greatly affected. Ratios of unsaturated to saturated fatty acids in these cells decreased 3-fold with increased temperature in the growth environment. Cells cultured at 20 C contained 30% of their fatty acids as linolenic while this fatty acid could not be detected in cells cultured at 55 C.
铜绿微囊藻在 20°C 和 55°C 下培养,并在指数生长期收获。对每种细胞类型的脂质比较研究表明,55°C 下生长的细胞中的总脂质比 20°C 下生长的细胞减少一半。虽然高温(55°C)不会影响脂质在五种脂质类别的分布,但不饱和程度受到很大影响。在生长环境中,温度升高会使这些细胞中不饱和脂肪酸与饱和脂肪酸的比例降低 3 倍。在 20°C 下培养的细胞中,30%的脂肪酸为亚麻酸,而在 55°C 下培养的细胞中则检测不到这种脂肪酸。