Laboratory of Genetics, University of Wisconsin, Madison, United States.
United States Department of Energy Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, United states.
Elife. 2019 Jan 8;8:e42153. doi: 10.7554/eLife.42153.
Perception of seasonal cues is critical for reproductive success in many plants. Exposure to winter cold is a cue that can confer competence to flower in the spring via a process known as vernalization. In certain grasses, exposure to short days is another winter cue that can lead to a vernalized state. In , we find that natural variation for the ability of short days to confer competence to flower is due to allelic variation of the () paralog (). An active allele is required for the acquisition of floral competence, demonstrating a novel role for a member of the family of genes. Loss of the short-day vernalization response appears to have arisen once in and spread through diverse lineages indicating that this loss has adaptive value, perhaps by delaying spring flowering until the danger of cold damage to flowers has subsided.
许多植物中，对季节 cues 的感知对于生殖成功至关重要。冬季寒冷的暴露是一种可以通过称为春化的过程赋予植物在春天开花能力的 cue。在某些草中，短日照暴露是另一种可以导致春化状态的冬季 cue。在 中，我们发现短日照赋予开花能力的能力的自然变异是由于 () paralog () 的等位基因变异。活性 等位基因是获得花能力所必需的，这证明了 基因家族成员的一个新作用。短日春化反应的丧失似乎在 中只发生过一次，并通过不同的谱系传播，表明这种丧失具有适应性价值，也许可以通过延迟春季开花直到花朵免受寒冷伤害的危险过去。
