期刊
NEW PHYTOLOGIST
卷 232, 期 3, 页码 1123-1158出版社
WILEY
DOI: 10.1111/nph.17072
关键词
belowground ecology; ecosystem properties and processes; environmental gradients; plant functions; root traits; spatial and temporal scales; trait causal relationships; trait covariation
资金
- New Phytologist Foundation
- Cogitamus Laboratory
- Grant agency of the Czech Republic [1913103S]
- Institute of Dendrology, Polish Academy of Sciences
- Biological and Environmental Research programme in the United States Department of Energy's Office of Science
Based on a review of various aspects in plant physiology and ecology, it is evident that there are complex relationships between root traits and functions, with many knowledge gaps still remaining. Future research should focus on considering a more comprehensive range of functionally relevant traits across different species, environments and time series in order to establish causal hierarchical links among root traits.
The effects of plants on the biosphere, atmosphere and geosphere are key determinants of terrestrial ecosystem functioning. However, despite substantial progress made regarding plant belowground components, we are still only beginning to explore the complex relationships between root traits and functions. Drawing on the literature in plant physiology, ecophysiology, ecology, agronomy and soil science, we reviewed 24 aspects of plant and ecosystem functioning and their relationships with a number of root system traits, including aspects of architecture, physiology, morphology, anatomy, chemistry, biomechanics and biotic interactions. Based on this assessment, we critically evaluated the current strengths and gaps in our knowledge, and identify future research challenges in the field of root ecology. Most importantly, we found that belowground traits with the broadest importance in plant and ecosystem functioning are not those most commonly measured. Also, the estimation of trait relative importance for functioning requires us to consider a more comprehensive range of functionally relevant traits from a diverse range of species, across environments and over time series. We also advocate that establishing causal hierarchical links among root traits will provide a hypothesis-based framework to identify the most parsimonious sets of traits with the strongest links on functions, and to link genotypes to plant and ecosystem functioning.
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