Neighbour-detection causes shifts in allocation across multiple organs to prepare plants for light competition

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY Functional Ecology Pub Date : 2024-06-19 DOI:10.1111/1365-2435.14603

Isaac K. Uyehara, Trixie Bechinger, Alex Jordan, Mark van Kleunen

引用次数: 0

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邻接检测导致多个器官的分配发生变化，使植物为光照竞争做好准备

为了最大限度地提高适生性，植物必须根据非生物和生物环境调整其分配策略。植物可以利用红光和远红光的比例（R:FR）来感知邻居，从而改变自己的生长以应对地上部的竞争。在这项研究中，我们利用补充的远红外光来人为降低普通向日葵（Helianthus annuus）下部叶片的红外光与远红外光之比，以研究植物如何改变其生长以应对邻居的威胁。我们将这一处理与氮肥处理相结合，以研究对邻近检测的反应如何与氮限制相互作用。在低R:FR条件下生长的植物在增加高度的同时牺牲了根系的生长，导致氮限制限制了叶片的生长。然而，我们发现，在低 R:FR 条件下，植物减少了对叶片的氮投入。通过在低光合有效辐射叶片经历低光合有效辐射之前削弱这些叶片的氮汇强度，植物能够预先将氮分配给冠层中较高的叶片。植物通过同时将资源从根的生长转移到茎的伸长，从受到邻居威胁的叶片转移到会对邻居构成威胁的叶片，来对邻居的感知做出反应。这种对邻居探测的全植物反应使植物能够改变其分配方式，同时管理其有限的氮，并为未来的光竞争做好准备。在期刊博客上免费阅读本文的通俗摘要。

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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.