草地物种的身份塑造了根和叶类真菌的社区,而不是高度
Stephanie N Kivlin1,2, Michael A Mann3,4, Joshua S Lynn3,4
1Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN, 37996, USA. skivlin@utk.edu.
ISME communications
|November 8, 2023
概括
草中的真菌共生体更多地受到宿主植物身份的影响,而不是高度的影响. 它们的分布,特别是树枝状菌根真菌,很可能会随着气候变化的反应而跟随草的移动.
科学领域:
- 植物与真菌的相互作用
- 生态生态学 生态生态学
- 环境变化 环境变化
背景情况:
- 菌类共生体缓冲植物免受环境压力,影响宿主适应.
- 沿着非生物梯度的真菌共生体的分布还不太清楚.
- 植物-真菌相互作用网络结构可能会随着环境压力而改变.
研究的目的:
- 为了研究真菌共生群体及其与草的相互作用如何在高度梯度上发生变化.
- 确定真菌共生体分布的主要驱动因素 (宿主身份与环境因素).
- 预测气候变化对真菌共生体的影响.
主要方法:
- 在科罗拉多州洛基山脉的六个海拔梯度上采样了634种草菌组合.
- 分析叶子内生菌,根内生菌和树状菌根 (AM) 菌的多样性,组成和丰富性.
- 描述真菌的功能组 (病原体,菌体,互惠体) 和植物-真菌网络结构.
主要成果:
- 真菌共生体的多样性和组成与草地宿主身份比与海拔高度有更强烈的相关性.
- 树枝状菌根 (AM) 菌群追踪了整个环境梯度的宿主草的身份.
- 根内植物性真菌网络在更高的海拔上变得更加嵌套和更少的专业化,但其他协会没有显示这种模式.
结论:
- 草种的身份是塑造真菌共生体群落的主导因素,超过了环境变异.
- 气候变化不太可能直接影响真菌共生体;它们的分布将遵循宿主草地范围的变化.
- 了解宿主植物动态对于预测真菌共生体对环境变化的反应至关重要.
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