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基因型多样性通过土壤生物反增强了本地植物的抗入侵能力

Cai Cheng¹, Zekang Liu¹, Qun Zhang²

¹National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, China.

Ecology letters

|March 1, 2024

概括

本地植物的基因型多样性通过调节土壤微生物群落和植物-土壤反来增强对入侵的抵抗力,影响像Spartina alterniflora这样的入侵物种.

科学领域:

生态生态学生态生态学
侵入性物种生物学生物学
植物与土壤的相互作用

背景情况:

原生物种的多样性往往提高了对入侵的抵抗力,但物种内部多样性的作用是不太了解的.
受土壤生物群影响的植物-土壤反,可以间接影响植物社区动态和入侵成功.

研究的目的:

研究本土植物Scirpus mariqueter的基因型多样性如何影响入侵性Spartina alterniflora的表现.
区分非生物和生物植物-土壤反在介导入侵抵抗中的作用.

主要方法:

操纵了Scirpus mariqueter的基因型多样性,以训练土壤.
评估Spartina alterniflora在不同本土植物基因型多样性水平培养的活体和灭菌土壤中的表现.
分析了土壤微生物生物质和真菌多样性.

主要成果:

随着活土壤本土基因型多样性增加,入侵者的表现下降,这表明抗性增强.
在灭菌土壤中,这种抵抗效应被逆转,突出显示了土壤生物群的关键作用.
在由多种本地基因型培养的土壤中增加的微生物生物量和真菌多样性与更强的反效应相关.

结论:

在物种内,本地植物的基因型多样性通过植物-土壤反显著提高了对入侵的抵抗力.
土壤生物群,特别是微生物和真菌群体,是这种多样性-入侵抵抗关系的关键媒介.
了解植物-土壤反对于预测和管理入侵物种动态至关重要.

关键词:

奇异物种是外来物种.遗传多样性遗传多样性抗入侵能力抗入侵能力非添加效应的非添加效应.植物入侵植物入侵植物与土壤的反.土壤生物群土壤生物群土壤遗留效应的影响

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