Plant functional types and tissue stoichiometry explain nutrient transfer in common arbuscular mycorrhizal networks of temperate grasslands

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY

Functional Ecology Pub Date : 2024-08-27 DOI:10.1111/1365-2435.14634

Hilary Rose Dawson, Katherine L. Shek, Toby M. Maxwell, Paul B. Reed, Barbara Bomfim, Scott D. Bridgham, Brendan J. M. Bohannan, Lucas C. R. Silva

引用次数: 0

Abstract

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植物功能类型和组织化学计量解释了温带草地常见节肢型菌根网络中的养分转移问题

植物与菌根真菌形成的互惠关系会影响资源在生物体之间和生态系统内部的流动。常见的菌根网络（CMN）可以促进碳和限制性养分的优先转移，但这仍然难以预测。CMNs是否有利于真菌获取资源而牺牲了植物的资源需求（以真菌为中心的观点），或者它们是否是植物调节资源通量的被动渠道（以植物为中心的观点）？我们利用稳定同位素示踪剂（13CO2 和 15NH3）、植物性状和菌根 DNA 来量化美国西北太平洋地区 520 公里纬度梯度上 18 种植物之间的地上和地下碳氮转移。植物功能类型和组织化学计量是预测种间资源转移的最重要因素。在 "供体 "植物中，98%富含 13C，但我们只在 2% 的 "受体 "植物中检测到了资源转移。然而，所有的 "供体 "植物都富含 15N，我们在 81% 的 "受体 "植物中检测到了转移。与多年生植物（每克叶片质量 0.13 ± 0.30 毫克氮）相比，氮优先转移到一年生植物（每克叶片质量 0.26 ± 0.50 毫克氮）。这与组织的化学计量差异相符。综述我们的研究结果表明，植物和真菌在空间上距离更近，随着时间的推移对资源的需求更强，它们更有可能获得更多的限制性资源。在期刊博客上免费阅读本文的通俗语言摘要。

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来源期刊

Functional Ecology 环境科学-生态学

CiteScore

9.00

自引率

1.90%

发文量

243

审稿时长

4 months

期刊介绍： Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.