草本体样本揭示了Capsella bursa-pastoris的叶形和气候之间的联系
Asia T Hightower1,2,3, Daniel H Chitwood4,5, Emily B Josephs1,2,3
1Department of Plant Biology, Michigan State University, 612 Wilson Road, East Lansing, 48824-1226, MI, USA.
American journal of botany
|November 6, 2024
概括
在具有可变叶边缘的植物中,温度会影响叶形状. 几何形态学有效量化了这种叶子形状的变化,尽管环境发生了变化,但随着时间的推移揭示了一致的模式.
科学领域:
- 植物形态学和进化过程
- 生态学和环境科学生态学和环境科学
背景情况:
- 叶子形状的变化与植物的形状,功能和健康有关.
- 在具有不一致的叶边缘的物种中量化叶子形状变化存在挑战.
研究的目的:
- 为了研究Capsella bursa-pastoris的叶子形状变化,这是一种具有不一致的叶子形状的物种.
- 为了确定环境因素和时间对叶子形状变化的影响.
主要方法:
- 利用几何形态模拟和确定性技术.
- 分析了大约500个数字化标本的Capsella bursa-pastoris收集在整个美国大陆超过100年.
- 与环境因素和时间相关的模拟叶形状.
主要成果:
- 在Capsella bursa-pastoris中,叶形状的变化与生长季节的温度有很强的相关性,显示温度升高时叶片状的减少.
- 叶子形状的变化在100年研究期间保持一致,与预期相反.
结论:
- 几何形态模型是有效的量化叶子形状变化与不一致的叶子形状的物种.
- 温度被确定为驱动Capsella bursa-pastoris树叶形状变化的主要环境因素.
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