Journal
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
Volume 59, Issue 6, Pages 356-389Publisher
WILEY
DOI: 10.1111/jipb.12534
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Funding
- National Science Foundation [IOS-1450560]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1450650] Funding Source: National Science Foundation
- Direct For Computer & Info Scie & Enginr [1450560] Funding Source: National Science Foundation
- Div Of Information & Intelligent Systems [1450560] Funding Source: National Science Foundation
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Herein we review the current state-of-the-art of plant hydraulics in the context of plant physiology, ecology, and evolution, focusing on current and future research opportunities. We explain the physics of water transport in plants and the limits of this transport system, highlighting the relationships between xylem structure and function. We describe the great variety of techniques existing for evaluating xylem resistance to cavitation. We address several methodological issues and their connection with current debates on conduit refilling and exponentially shaped vulnerability curves. We analyze the trade-offs existing between water transport safety and efficiency. We also stress how little information is available on molecular biology of cavitation and the potential role of aquaporins in conduit refilling. Finally, we draw attention to how plant hydraulic traits can be used for modeling stomatal responses to environmental variables and climate change, including drought mortality.
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