短期暴露于高温和CO2会改变红三叶草中植物雌激素的产生
Palash Mandal1,2, Marta R M Lima3, Anna K Wallingford1
1Department of Agriculture, Nutrition, and Food Systems, University of New Hampshire, Durham, NH, USA.
Scientific reports
|March 18, 2025
概括
气候变化影响植物化合物. 升高的温度降低了红三叶草的植物雌激素,而升高的CO2降低了特定的异黄,影响了这些植物防御分子.
科学领域:
- 植物科学 植物科学
- 环境科学 环境科学
- 生物化学 生物化学
背景情况:
- 植物雌激素是模仿雌激素的植物化合物,通常作为应激防御分子.
- 红三叶草等豆类产生植物性雌激素,在气候变化下有可能增加产量.
- 气候变化因素,包括温度升高和二氧化碳,可能会改变植物雌激素水平.
研究的目的:
- 研究高温和二氧化碳对红三叶草和牛中植物性雌激素度的影响.
- 确定这些气候变化因素是否单独或组合影响植物雌激素的生产.
- 评估植物生理变量与植物雌激素水平之间的关系.
主要方法:
- 在一项受控生长室研究中,红三叶草和牛豆暴露在高温 (eT) 和高CO2 (eCO2) 的环境中.
- 植物在10天内接受了ET (35/26°C昼夜),eCO2 (~750ppm) 或两者兼而有之的气温.
- 在植物组织中测量了植物雌激素度和生理变量.
主要成果:
- 在所有实验条件下,牛豆中的植物性雌激素水平是无法检测的.
- 在红三叶草中,ET显著降低了总植物雌激素度的50%,主要是由于甲诺丁和生物素A的降低.
- eCO2没有影响红三叶草的总植物性雌激素,但降低了43%的戴兹度.
结论:
- 高温显著降低红三叶草中关键的植物雌激素,影响它们作为防御化合物的作用.
- 升高的二氧化碳具有更具体的效果,降低红三叶草中的某些异黄.
- 植物生理反应与植物雌激素度的相关性较弱,表明复杂的相互作用.
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