Plant responses to rising vapor pressure deficit.
- Grossiord C Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland.
- Buckley TN Department of Plant Sciences, University of California, Davis, Davis, CA, 95616, USA.
- Cernusak LA College of Science and Engineering, James Cook University, Cairns, Qld, 4814, Australia.
- Novick KA School of Public and Environmental Affairs, Indiana University Bloomington, Bloomington, IN, 47405, USA.
- Poulter B Biospheric Sciences Lab, NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA.
- Siegwolf RTW Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland.
- Sperry JS Department of Biology, University of Utah, Salt Lake City, UT, 84112, USA.
- McDowell NG Earth Systems Science Division, Pacific Northwest National Laboratory, Richland, WA, 99354, USA.
- 2020-02-18
Published in:
- The New phytologist. - 2020
English
Recent decades have been characterized by increasing temperatures worldwide, resulting in an exponential climb in vapor pressure deficit (VPD). VPD has been identified as an increasingly important driver of plant functioning in terrestrial biomes and has been established as a major contributor in recent drought-induced plant mortality independent of other drivers associated with climate change. Despite this, few studies have isolated the physiological response of plant functioning to high VPD, thus limiting our understanding and ability to predict future impacts on terrestrial ecosystems. An abundance of evidence suggests that stomatal conductance declines under high VPD and transpiration increases in most species up until a given VPD threshold, leading to a cascade of subsequent impacts including reduced photosynthesis and growth, and higher risks of carbon starvation and hydraulic failure. Incorporation of photosynthetic and hydraulic traits in 'next-generation' land-surface models has the greatest potential for improved prediction of VPD responses at the plant- and global-scale, and will yield more mechanistic simulations of plant responses to a changing climate. By providing a fully integrated framework and evaluation of the impacts of high VPD on plant function, improvements in forecasting and long-term projections of climate impacts can be made.
- Language
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- English
- Open access status
- bronze
- Identifiers
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- DOI 10.1111/nph.16485
- PMID 32064613
- Persistent URL
- https://sonar.ch/global/documents/48577
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