ArticleAnnals of botany2023
Ontogenetic changes in root and shoot respiration, fresh mass and surface area of Fagus crenata.
Article in Annals of botany, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 10 citations in OpenAlex.
- The "fire of life cycles": age-specific metabolic scaling within and among species.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2026Review
- Biodiversity, Phylogeny, and Evolutionary Dynamics of Gall Midges on Japanese Beech Trees.Ecology and evolution · 2025Article
- Scaling of shoot and root respiration of woody and herbaceous plants.Proceedings. Biological sciences · 2025Article
- A Nonlinear Dynamical View of Kleiber's Law on the Metabolism of Plants and Animals.Entropy (Basel, Switzerland) · 2023Article
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9 authors at 6 institutions in 2 countries.
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Abstract
BACKGROUND AND
aimsTo date, studies on terrestrial plant ecology and evolution have focused primarily on the trade-off patterns in the allocation of metabolic production to roots and shoots in individual plants and the scaling of whole-plant respiration. However, few empirical studies have investigated the root : shoot ratio by considering scaling whole-plant respiration at various sizes throughout ontogeny.
methodsHere, using a whole-plant chamber system, we measured the respiration rates, fresh mass and surface area of entire roots and shoots from 377 Fagus crenata individuals, from germinating seeds to mature trees, collected from five different Japanese provenances. Non-linear regression analysis was performed for scaling of root and shoot respiration, fresh mass and surface area with body size. KEY
resultsWhole-plant respiration increased rapidly in germinating seeds. In the seedling to mature tree size range, the scaling of whole-plant respiration to whole-plant fresh mass was expressed as a linear trend on the log-log coordinates (exponent slightly greater than 0.75). In the same body size range, root and shoot respiration vs. whole-plant fresh mass were modelled by upward-convex (exponent decreased from 2.35 to 0.638) and downward-convex trends (exponent increased from -0.918 to 0.864), respectively. The root fraction in whole-plant respiration, fresh mass and surface area shifted continuously throughout ontogeny, increasing in smaller seedlings during early growth stages and decreasing in larger trees.
conclusionsOur results suggest a gradual shift in allocation priorities of metabolic energy from roots in seedlings to shoots in mature trees, providing insights into how roots contribute to shoot and whole-plant growth during ontogeny. The models of root : shoot ratio in relation to whole-plant physiology could be applied in tree growth modelling, and in linking the different levels of ecological phenomena, from individuals to ecosystems.
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