种子传播模式的进化历史和全球分布在形种子中
Lu Jin1, Min Li1, Zhi-Heng Wang2
1Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
The New phytologist
|February 2, 2026
概括
血管精子种子的散播模式,如zoochory和anemochory,随着气候变化而演变. 分散模式没有影响多样化速率,但与度和温度异常有关.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 古气候学 古气候学
背景情况:
- 种子散布对于植物迁移和适应至关重要,特别是在气候变化方面.
- 全球模式和种子散播模式的驱动因素 (动物性,无细胞性,水性,自体性) 尚不清楚.
- 了解这些模式对于预测血管精子对环境变化的反应至关重要.
研究的目的:
- 评估全球血管精子种子分散模式的进化动态和地理变异.
- 调查种子散布方式对多样化速率的影响.
- 探索种子散布和古气温与当代气候之间的关系.
主要方法:
- 利用了35131种苗物种的种子分散模式的全球数据集.
- 分析了与分散模式相关的进化趋势和多样化速率.
- 与古气温和最近的气候异常 (例如,最后的冰川最大值) 相关的分散模式流行.
主要成果:
- 在大约1.05亿年前后,动物病的发病率显著增加.
- 无生物到生物的分散过渡率与古气温相关,显示了9000万年前和之后的明显模式.
- 没有发现种子分散模式对血管精子多样化速率有显著影响.
- 在空间上,随着度的增加,zoochory下降,autochory增加,与温度相关.
- 贫血病和动物病的患病率与自最后一个冰川最大期以来的温度异常有正相关.
结论:
- 气候波动极大地影响了苗种子散播模式的时空分布.
- 种子分散模式和血管精子多样化之间的关系比以前假设的要复杂得多.
- 在气候不稳定的地区,长距离散播策略似乎更受欢迎.
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