Description
This dataset includes 1,567 recorded tissue O2 levels from 112 plant species extracted from published literature. The data forms the basis of the publication "A meta-analysis of plant tissue O2 dynamics" with the following abstract:Adequate tissue O2 supply is crucial for plant functioning. We therefore aimed at identifying environmental conditions and plant characteristics affecting plant tissue O2 status. We extracted data and performed meta-analysis on > 1,500 published tissue O2 measurements from 112 species. Tissue O2 status ranged from anoxic conditions in especially roots, to > 53 kPa in submerged, photosynthesizing shoots. Using information-theoretic model selection, we identified ‘submergence’, ‘light’, ‘tissue type’ as well as ‘light × submergence’ interaction as significant drivers of tissue O2 status. Median O2 status was especially low (< 50% of atmospheric equilibrium) in belowground rhizomes, potato tubers and root nodules. Mean shoot and root O2 was ~25% higher in light than in dark when shoots had atmospheric contact. However, light showed a significant interaction with submergence on plant O2, with a submergence-induced 44% increase in light, compared with a 42% decline in dark, relative to plants with atmospheric contact. During submergence, ambient water column O2 and shoot tissue O2 correlated stronger in darkness than in light conditions. Although miniaturised Clark-type O2 electrodes in particular have resulted in enhanced understanding of plant O2 dynamics, the use of non-invasive methods is still lacking behind its widespread use in mammalian tissues.
Date made available | 2023 |
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Publisher | Dryad |