期刊
JOURNAL OF ECOLOGY
卷 110, 期 9, 页码 2015-2032出版社
WILEY
DOI: 10.1111/1365-2745.13934
关键词
biotic interactions; interference; phenotypic plasticity; plant nitrogen economics; plant-plant interactions; soil biota; soil nitrogen cycling
The nitrogen economics of plants are not solely determined by functional traits, but also influenced by symbionts and decomposers. Plant responses and interactions in complex nitrogen availability environments are crucial for their survival. Further research is needed to fully understand plant nitrogen economics and resource economics in plant communities.
The nitrogen (N) economics of plants are generally described in terms of functional traits and how these affect N availability in a given environment. However, recent studies have shown that plant symbionts play a crucial role in plant N economics. A plant together with its symbiont can be considered as a meta-organism, the holobiont. Plant-associated symbionts are shaped by the plant, thereby extending the plant's phenotype. Decomposers also play an important role in plant N economics, yet are usually not included in the plant holobiont. In this review, we show the important roles that both symbionts and decomposers play in plant N economics. We focus on how plants respond to fluctuating N availability in a complex interaction network, which includes the plant's strategies and its interactions and feedback loops with the soil biota and with neighbouring plants, through competition for N by exploitation and interference. Synthesis. Plant N economics and the outcome of plant-plant interactions in a community cannot be fully described solely through the functional traits of plant individuals. Properties emerging from the interaction network bring new insights into plant N economics. Further research is now needed to gain a deeper understanding of plant N economics and resource economics in plant communities by integrating a broader extended plant phenotype.
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