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Adaptations and responses of the common dandelion to low atmospheric pressure in high-altitude environments
Journal of Ecology ( IF 5.3 ) Pub Date : 2021-06-25 , DOI: 10.1111/1365-2745.13736 Carla C. M. Arce 1 , Zoe Bont 2 , Ricardo A. R. Machado 3 , Paulo F. Cristaldo 4 , Matthias Erb 2
中文翻译：
普通蒲公英对高海拔环境低气压的适应与响应
更新日期：2021-06-25
Journal of Ecology ( IF 5.3 ) Pub Date : 2021-06-25 , DOI: 10.1111/1365-2745.13736 Carla C. M. Arce 1 , Zoe Bont 2 , Ricardo A. R. Machado 3 , Paulo F. Cristaldo 4 , Matthias Erb 2
Affiliation
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- Atmospheric pressure is an important, yet understudied factor that may shape plant ecology and evolution.
- By growing plants under controlled conditions at different experimental stations in the Swiss alps, we evaluated the impact of ecologically realistic atmospheric pressures between 660 and 950 hPa on the growth and defence of different dandelion populations.
- Low atmospheric pressure was associated with reduced root growth and defensive sesquiterpene lactone production. Defence suppression only occurred in populations originating from lower altitudes. Populations from higher altitudes constitutively produced less sesquiterpene lactones and did not suffer from suppression under low atmospheric pressure.
- Synthesis. We conclude that atmospheric pressure modulates root growth and defence traits, and that evolutionary history shapes plant phenotypic responses to atmospheric pressure. Our findings have important implications for our understanding of altitudinal gradients and the future use of plants as a source of food and bioactive metabolites in extraterrestrial habitats.
中文翻译：
普通蒲公英对高海拔环境低气压的适应与响应
- 大气压力是可能影响植物生态和进化的一个重要但尚未得到充分研究的因素。
- 通过在瑞士阿尔卑斯山的不同实验站在受控条件下种植植物，我们评估了 660 到 950 hPa 之间的生态现实大气压力对不同蒲公英种群的生长和防御的影响。
- 低气压与根系生长减少和防御性倍半萜内酯产生有关。防御压制只发生在来自低海拔地区的人群中。来自高海拔地区的人口组成性地产生较少的倍半萜内酯，并且在低气压下不会受到抑制。
- 合成。我们得出结论，大气压力调节根系生长和防御特性，并且进化历史塑造了植物对大气压力的表型反应。我们的发现对我们理解海拔梯度以及未来将植物用作外星栖息地中食物和生物活性代谢物的来源具有重要意义。
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