Journal
PLANT CELL AND ENVIRONMENT
Volume 40, Issue 6, Pages 914-920Publisher
WILEY
DOI: 10.1111/pce.12845
Keywords
hydraulic conductance; Peclet effect; stable isotopes; transpiration; water relations
Categories
Funding
- Australian Research Council [DP150103863, DP150100588]
- National Science Foundation [1146514]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1557906] Funding Source: National Science Foundation
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How water moves through leaves, and where the phase change from liquid to vapour occurs within leaves, remain largely mysterious. Some time ago, we suggested that the stable isotope composition of leaf water may contain information on transport pathways beyond the xylem, through differences in the development of gradients in enrichment within the various pathways. Subsequent testing of this suggestion provided ambiguous results and even questioned the existence of gradients in enrichment within the mesophyll. In this review, we bring together recent theoretical developments in understanding leaf water transport pathways and stable isotope theory to map a path for future work into understanding pathways of water transport and leaf water stable isotope composition. We emphasize the need for a spatially, anatomically and isotopically explicit model of leaf water transport.
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