小RNA, 大本领: 22 nt siRNAs在植物适应逆境中的重要作用
武亮1,*(
),戚益军2,*()
),戚益军2,*()
Small RNA, No Small Feat: Plants Deploy 22 nt siRNAs to Cope with Environmental Stress
Liang Wu1,*(),Yijun Qi2,*()
),Yijun Qi2,*()
图2. 拟南芥22 nt siRNA的工作模式
正常条件下22 nt siRNA几乎不表达, 在氮饥饿等逆境条件下被大量诱导, 进入AGO1沉默复合物, 抑制NIA等基因的翻译, 平衡植物生长发育与抗逆。
Figure 2. A working model for 22 nt siRNAs in plant stress adaptation
The 22 nt siRNAs are barely accumulated under normal conditions, but can be dramatically induced when plants are exposed to adverse environments. These sRNAs are recruited into AGO1 complex and lead to the translational inhibition of NIA genes, thereby balancing plant development and stress tolerance.
