植物现象特征的植物遗传保护在中国的温带气候和亚热带气候之间有所不同
Khurram Shahzad1, Mengyao Zhu1, Lijuan Cao1
1Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Acadamy of Sciences (CAS), Beijing, China.
Frontiers in plant science
|April 25, 2024
概括
遗传学保守主义影响了植物现象学,在温带气候 (西安) 中观察到显著的影响,但在亚热带气候 (贵阳) 中没有. 进化史和气候相互作用,形成植物春季的现象特征.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 植物学 植物学
背景情况:
- 众所周知,像叶子和花朵这样的现象特征是遗传学上保存的.
- 遗传学保守主义,植物现象学和气候因素之间的相互作用需要进一步调查.
研究的目的:
- 评估开花植物的现象特征,作为植物遗传学保守主义的证据.
- 了解不同气候区植物现象特征,植物系和气候之间的关系.
主要方法:
- 在西安 (温带) 和贵阳 (亚热带) 的65棵树和49棵灌木中利用了春季现象特征数据 (1968-2018).
- 采用分子数据集和进化模型,包括遗传学概括最小平方 (PGLS),以测试遗传学保守主义.
- 进行分子测年,以确定植物物种的分离时间.
主要成果:
- 在西安 (温带) 发现了显著的现象特征的遗传学保存,但在贵阳 (亚热带) 却没有发现.
- PGLS模型显示,在西安的现象特征和族系学之间存在显著的相关性,但在贵阳却没有.
- 西安物种分离了约95万年前 (白纪晚期),而贵阳物种分离了约46万年前 (中欧纪).
- 第一叶日期 (FLD) 在西安晚于贵阳,但第一花日期 (FFD) 在贵阳晚于西安.
结论:
- 植物系,生长形式,功能特征和当地气候相互作用,影响开花的现象学多样性.
- 植物现象学中的进化保护机制在不同的地理和气候区域之间有所不同.
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