植物整合了有关营养和邻居的信息
James F Cahill1, Gordon G McNickle, Joshua J Haag
1Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada. jc.cahill@ualberta.ca
Science (New York, N.Y.)
|June 26, 2010
概括
植物可以感知和响应它们的环境,类似于动物. Abutilon theophrasti植物根据竞争对手的存在和营养的可用性来调整根的生长,显示出复杂的环境整合.
科学领域:
- 植物生物学 植物生物学
- 生态生态学 生态生态学
- 行为生态学 行为生态学
背景情况:
- 动物整合了资源的位置和竞争对手的存在,以寻找食物.
- 植物整合环境线索的能力,如竞争和资源分配,是不太了解的.
研究的目的:
- 调查一年生植物Abutilon theophrasti是否整合了关于竞争对手存在和资源分配异质性的信息.
- 确定这些因素如何影响植物的食行为,特别是根分布.
主要方法:
- 在受控条件下研究Abutilon theophrasti.
- 操纵了竞争对手的存在和土壤营养物质的分布 (均与异质).
- 根据这些条件,测量了根分布模式.
主要成果:
- 单独种植的植物表现出均的根分布,而不管营养的可用性.
- 具有竞争对手和统一营养的植物显著减少了根幅度和分离的土壤使用.
- 具有竞争对手和异质营养素的植物只显示了根生长的适度减少,表明两种线索的整合.
结论:
- 阿布蒂隆·西奥弗拉斯蒂 (Abutilon theophrasti) 对环境条件表现出复杂的反应.
- 植物整合了关于邻居存在和资源分布的信息,以修改根的行为.
- 这表明植物具有复杂的环境传感和适应策略.
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