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来自中国、美国和瑞典的联合课题组,首次成功研发出了第一种转基因水稻,可以同时减少甲烷释放量和提高稻谷颗粒淀粉含量。其中的关键基因是大麦中的糖信号分子(sugar signalling in barley 2,SUSIBA2)。SUSIBA2是一种只存在于植物的转录因子,参与调节糖分子诱导的基因表达,因而可能参与了能量分子从合成到固定下来的信号通路。过量表达SUSIBA2可以导致植物更高的淀粉合成水平和沉积量,并且减少甲烷的释放量。因此,SUSIBA2转基因水稻的安全性验证如果能够通过的话,那么对于人类的可持续发展将具有重要意义。
For the first time, joint research groups from China, the United States and Sweden have successfully developed the first transgenic rice that can simultaneously reduce methane emissions and increase grain starch content. One of the key genes is sugar signaling in barley (SUSIBA2). SUSIBA2 is a plant-only transcription factor that is involved in the regulation of sugar molecule-induced gene expression and therefore may be involved in the signaling pathway of energy molecules from synthesis to immobilization. Overexpression of SUSIBA2 can lead to higher levels of starch synthesis and deposition in plants, as well as reduce the amount of methane released. Therefore, the safety verification of SUSIBA2 transgenic rice will be of great significance to the sustainable development of human beings.