Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland.
Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, Wojska Polskiego 71C, 60-625 Poznań, Poland.
Int J Mol Sci. 2022 Mar 16;23(6):3187. doi: 10.3390/ijms23063187.
Although seed quality and quantity, as well as reproductive performance are important life history stages of plants, little is known about the reproductive responses of trees to environmental changes such as increased anthropogenic deposition of nitrogen (N) and phosphorus (P). Dioecious plants are good models with which to test the environmental impact on female or male reproductive responses individually. We analysed effects of different long-term nutritional availability on the reproductive performance of two dioecious species ( L. and L.) characterised by different life histories. By using pot experiments with vegetatively propagated plants grown in different fertilisation conditions, we observed an increase in plant growth and strobili production but a decrease in seed efficiency. Seeds produced by fertilised plants had greater seed mass. Fertiliser addition did not change C or N content nor the C/N ratio of seeds, but increased N content and the N/P ratio; however, it did lower the C/N ratio in . Fertilisation did not change the metabolite profile in but 18 metabolites were changed in . The study revealed new links between species life history, environmental changes, and reproduction. The findings imply that future environmental conditions may alter both seed productivity, and quality, as well as plant reproductive behaviour.
尽管种子质量和数量以及繁殖性能是植物重要的生活史阶段，但对于树木对环境变化（如人为增加氮（N）和磷（P）沉积）的繁殖反应知之甚少。雌雄异株植物是测试环境对雌性或雄性繁殖反应的个体影响的良好模型。我们分析了不同长期营养供应对两种雌雄异株物种（L.和L.）繁殖性能的影响，这两种物种具有不同的生活史。通过使用营养条件不同的无性繁殖植物进行盆栽实验，我们观察到植物生长和雄球果产量增加，但种子效率降低。施肥植物产生的种子具有更大的种子质量。施肥并未改变种子的 C 或 N 含量或 C/N 比，但增加了 N 含量和 N/P 比；然而，它降低了 的 C/N 比。施肥没有改变 的代谢物谱，但在 中改变了 18 种代谢物。该研究揭示了物种生活史、环境变化和繁殖之间的新联系。研究结果表明，未来的环境条件可能会改变种子生产力和质量以及植物繁殖行为。
