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Global variation in the fraction of leaf nitrogen allocated to photosynthesis
- Source :
- Nature Communications, Nature communications, vol 12, iss 1, Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
- Publication Year :
- 2021
- Publisher :
- Nature Publishing Group UK, 2021.
-
Abstract
- Plants invest a considerable amount of leaf nitrogen in the photosynthetic enzyme ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO), forming a strong coupling of nitrogen and photosynthetic capacity. Variability in the nitrogen-photosynthesis relationship indicates different nitrogen use strategies of plants (i.e., the fraction nitrogen allocated to RuBisCO; fLNR), however, the reason for this remains unclear as widely different nitrogen use strategies are adopted in photosynthesis models. Here, we use a comprehensive database of in situ observations, a remote sensing product of leaf chlorophyll and ancillary climate and soil data, to examine the global distribution in fLNR using a random forest model. We find global fLNR is 18.2 ± 6.2%, with its variation largely driven by negative dependence on leaf mass per area and positive dependence on leaf phosphorus. Some climate and soil factors (i.e., light, atmospheric dryness, soil pH, and sand) have considerable positive influences on fLNR regionally. This study provides insight into the nitrogen-photosynthesis relationship of plants globally and an improved understanding of the global distribution of photosynthetic potential.<br />The fraction of leaf nitrogen allocated to RuBisCO indicates differing nitrogen use strategies of plants and varies considerably. Here the authors show that this variation is largely driven by leaf thickness and phosphorus content with light intensity, atmospheric dryness and soil pH also having considerable influence.
- Subjects :
- Chlorophyll
Rubisco
Internationality
Nitrogen
Science
Ecophysiology
Climate
Ribulose-Bisphosphate Carboxylase
General Physics and Astronomy
Photosynthesis
General Biochemistry, Genetics and Molecular Biology
Article
Phosphorus metabolism
chemistry.chemical_compound
Soil
CARBON GAIN
Theoretical
PLANT FUNCTIONAL TYPES
ACCLIMATION
Models
Soil pH
LEAVES
Ecosystem
Nitrogen cycle
Ecological modelling
Science & Technology
Multidisciplinary
biology
RuBisCO
Phosphorus
General Chemistry
Models, Theoretical
Photosynthetic capacity
TRAIT DATABASE
Multidisciplinary Sciences
V-CMAX
MODEL
Plant Leaves
chemistry
Agronomy
PHOSPHORUS LIMITATION
biology.protein
Science & Technology - Other Topics
Environmental science
Subjects
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....161f804fb22571e8bf177ca4fe55fdca