植殖花的微生物是否影响了花的进化? 一个测试使用快速循环的Brassica
Sébastien Rivest1, Jessica R K Forrest1
1Department of Biology, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
Journal of evolutionary biology
|June 21, 2024
概括
鲜花微生物对鲜花的进化影响很小,这与人们的预期相反. 授粉者只影响了一种特征,在大多数花特征上没有观察到微生物和授粉者之间的显著相互作用.
科学领域:
- 植物与授粉者的相互作用
- 微生物生态学 微生物生态学
- 进化生物学是进化的生物学.
背景情况:
- 授粉者是花进化的关键驱动力.
- 花的微生物可以影响植物与传粉者的相互作用.
- 微生物在花进化中的作用仍然在很大程度上是未知的.
研究的目的:
- 研究花朵殖民微生物如何影响花朵的进化.
- 确定授粉者和微生物对花进化的相互作用影响.
- 评估授粉者和微生物对花形态,交配系统和吸引力的影响.
主要方法:
- 在6代的实验进化研究中,使用快速循环的Brassica rapa.
- 对授粉者和微生物存在的因数操纵.
- 测量6个形态特征,交配系统和花的吸引力.
主要成果:
- 授粉者只对花的数量产生显著影响;微生物没有推动特征进化.
- 授粉者和微生物在形态特征或花的吸引力之间没有相互作用.
- 在自主自我进化的过程中,我们观察到授粉者和微生物之间的显著相互作用.
结论:
- 微生物显示微弱的证据调解花的进化.
- 授粉者介导的选择可能很弱,限制了相互作用效应的检测.
- 实验进化研究容易受到漂移和人工物的影响,影响结果.
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