Cited by 155Photosynthetic Processes and MechanismsPlant Water Relations and Carbon DynamicsHorticultural and Viticultural Research

Leaf movement, stress avoidance and photosynthesis in Vitis californica.

Gamon, J. A., Pearcy, R. W.·1989·Oecologia

Abstract

Gas exchange and chlorophyll fluorescence techniques were used to evaluate the hypothesis that leaf movement in Vitis californica Benth. (California wild grape) allows a compromise between sunlight interception and stress damage in order to maximize photosynthetic carbon gain over the life of the leaf. Leaves that were restrained horizontally tolerated their increased radiation loads if critical temperatures were not exceeded. Reductions in photosynthetic capacity and the F V/F M fluorescence ratio only occurred in leaves that attained high temperatures. Leaf orientation and canopy position were important determinants of leaf temperature. These results indicate that excessive leaf temperature, not high PFD, can be a principle cause of reduced carbon gain and senescence in this species in the wild. Leaf movement appears to protect photosynthetic components in midsummer.

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Crossref · 10.1007/bf00378664

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33 of 33 references verified0 citation errors · 0 not checkable

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  • Reducing light absorption and thereby increasing albedo at the top of the canopy could decrease leaf temperature in the upper canopy, similar to the manner in which paraheliotropism reduces Tleaf in other species.

    “Reducing light absorption and thereby increasing albedo at the top of the canopy could decrease leaf temperature (Tleaf) in the upper canopy, similar to the manner in which paraheliotropism reduces Tleaf in other species (Gamon and Pearcy, 1989).”

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Authors
Gamon, J. A., & Pearcy, R. W.
Affiliations
University of California, Davis (US)
Venue
Oecologia
Published
1989-06
Volume
79
Issue
4
Pages
475-481
ISSN
  • 0029-8549 (ISSN-L)
  • 1432-1939
OpenAlex
W2022759043
Cited by
155
References
33
Citations by year
2026: 2 · 2025: 5 · 2024: 2 · 2023: 4 · 2022: 5 · 2021: 4 · 2020: 10 · 2019: 3 · 2018: 8 · 2017: 5 · 2016: 5 · 2015: 10 · 2014: 2 · 2013: 5 · 2012: 1
FWCI
1.27
Type
journal article
Language
en
Open access
closed
Locations
  • Oecologia (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
  • Physical Sciences › Environmental Science › Global and Planetary Change › Plant Water Relations and Carbon Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Horticultural and Viticultural Research
Keywords
leaf movement, leaf orientation, leaf temperature, photosynthesis, stress avoidance, chlorophyll fluorescence, Fv/Fm ratio, photosynthetic capacity, canopy position, leaf senescence, carbon gain, radiation load, heat damage

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