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植物抗虫基因的研究与应用 总被引:7,自引:0,他引:7
综述了抗虫目的基因的分离克隆和转基因抗虫植物的培育这两方面的研究成果和进展,并对植物抗虫基因工程研究和应用中存在的问题及其对策进行了分析和讨论。 相似文献
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Protein Rad23, a nucleotide excision repair factor, mainly involves in repairing the DNA damage from environment, such as UV light. The function of Rad23 protein involved in DNA damage repair from many environmental factors has been studied extensively, but it is not clear from ultraviolet irradiation. To further investigate the photo-protective function of Rad23 protein on HeLa cells damaged from UV light irradiation, firstly, HeLa cells were irradiated by UV light and incubated with the fusion protein of pCold-Rad23, then the cell viability and apoptosis rate were detected by MTT and Hoechst33342/Pl fluorescent staining, respectively. The results show that the recombinant Rad23 protein can protect the HeLa cells from UV irradiation, and inhibit the apoptosis of HeLa cell by UV irradiation. 相似文献
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pH值与温度对氧化亚铁硫杆菌氧化Fe2+影响的研究 总被引:10,自引:0,他引:10
采用自行采集的氧化亚铁硫杆菌(T f)应用于地浸矿山代替双氧水作氧化剂氧化吸附尾液中的Fe2+, 研究了温度、pH 值对其氧化Fe2+的影响。研究结果表明, T f 氧化Fe2+最适宜的温度为30 ℃, 当温度低于7 ℃或高于50 ℃时, 氧化亚铁硫杆菌氧化Fe2+速度很慢;T f 氧化Fe2+最适宜的pH 为2.0~2.5 。 相似文献
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Magnetic starch particles(MSPs) were synthesized in water-in-oil microemulsion at room temperature.MSPs were characterized by transmission electron microscopy(TEM),Fourier transform infrared spectrometry(FTIR),zeta potential system,thermogravimetric analysis(TGA) and vibrating sample magnetometry(VSM).The average diameter of the MSPs was 220 nm,dispersed with well-proportioned size and magnetic resonance,the saturation magnetization was 3.64 A·m2/kg.MSP was coated with poly-L-lysine(PLL),and then the surfac... 相似文献
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