Given increasing water deficits across numerous ecosystems world‐wide, it is urgent to understand the sequence of failure of leaf function during dehydration. We assessed dehydration‐induced losses of rehydration capacity and maximum quantum yield of the photosystem On average, losses of leaf rehydration capacity occurred at dehydration beyond 50% declines of The stomatal and leaf hydraulic systems show early functional declines before cell integrity is lost. Substantial damage to the photochemical apparatus occurs at extreme dehydration, after complete stomatal closure, and seems to be irreversible.
Stomatal regulation is crucial for forest species performance and survival on drought‐prone sites. We investigated the regulation of root and shoot hydraulics in three
- Award ID(s):
- 1754893
- NSF-PAR ID:
- 10079887
- Publisher / Repository:
- Wiley-Blackwell
- Date Published:
- Journal Name:
- Plant, Cell & Environment
- Volume:
- 42
- Issue:
- 2
- ISSN:
- 0140-7791
- Page Range / eLocation ID:
- p. 717-729
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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