期刊
PLANT CELL AND ENVIRONMENT
卷 40, 期 6, 页码 914-920出版社
WILEY
DOI: 10.1111/pce.12845
关键词
hydraulic conductance; Peclet effect; stable isotopes; transpiration; water relations
资金
- Australian Research Council [DP150103863, DP150100588]
- National Science Foundation [1146514]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1557906] Funding Source: National Science Foundation
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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