Key Laboratory of Forest Resources Conservation and Utilization in the Southwest Mountains of China (Southwest Forestry University), Ministry of Education, College of Forestry, Southwest Forestry University, 300 Bailong Si, Kunming, 650224, Yunnan, People's Republic of China.
School of Ecology and Landscape Architecture, Dezhou University, 566 West University Road, Dezhou, 253023, Shandong, People's Republic of China.
Plant Cell Rep. 2019 May;38(5):511-519. doi: 10.1007/s00299-019-02376-3. Epub 2019 Jan 16.
Cold acclimation is a process used by most temperate plants to cope with freezing stress. In this process, the expression of cold-responsive (COR) genes is activated and the genes undergo physiological changes in response to the exposure to low, non-freezing temperatures and other environmental signals. The C-repeat-binding factors (CBFs) have been demonstrated to regulate the expression of many COR genes. Recent studies have elucidated the molecular mechanisms of how plants transmit cold signals from the plasma membrane to the CBFs and the results have indicated that COR genes are also regulated through CBF-independent pathways. Climate change is expected to have a major impact on cold acclimation and freezing tolerance of plants. However, how climate change affects plant cold acclimation at the molecular level remains unclear. This mini-review focuses on recent advances in cold acclimation in Arabidopsis thaliana and discusses how signaling can be potentially impacted by climate change. Understanding how plants acquire cold acclimation is valuable for the improvement of the freezing tolerance in plants and for predicting the effects of climate change on plant distribution and agricultural yield.
冷驯化是大多数温带植物用来应对冰冻胁迫的一种过程。在这个过程中，冷响应（COR）基因的表达被激活，基因会对暴露在低温、非冰冻温度和其他环境信号下产生生理变化。现已证实 C-重复结合因子（CBFs）调节许多 COR 基因的表达。最近的研究阐明了植物如何将冷信号从质膜传递到 CBFs 的分子机制，结果表明 COR 基因也通过 CBF 非依赖途径进行调节。预计气候变化将对植物的冷驯化和抗冻性产生重大影响。然而，气候变化如何影响植物在分子水平上的冷驯化仍不清楚。本篇小综述重点关注拟南芥冷驯化的最新进展，并讨论信号转导如何可能受到气候变化的影响。了解植物如何获得冷驯化对于提高植物的抗冻性以及预测气候变化对植物分布和农业产量的影响具有重要意义。
