| 描述信息 |
Plants undergo various stresses during their whole life span, for example, low temperature is a key environmental factor restricting plant growth, development and geographical distribution. Plants have evolved sophisticated strategies to balance growth control and stress response. This kind of trade-off occurs at multiple layers, but the underlying mechanisms, particularly the translational level, remain less understood. Here, we show that the ribosome biogenesis factor Arabidopsis Protein Arginine Methyltransferase 3 (AtPRMT3) is a negative regulator in freezing stress. We find that AtPRMT3 is induced upon cold treatment, and AtPRMT3-mediated ribosome biogenesis is essential for cold stress response. Moreover, we revealed that AtPRMT3 and its interacting protein Ribosomal Protein S2 (RPS2) functions in heterogeneous ribosome translation, whereby rps2a2b-1 confers freezing tolerance resembling atprmt3-2, but rps2c-1 is similar to Col-0. |
