Document Type
Article
Publication Date
2-18-2019
Abstract
The widely documented phenomenon of nighttime stomatal conductance (gsn) could lead to substantial water loss with no carbon gain, and thus it remains unclear whether nighttime stomatal conductance confers a functional advantage. Given that studies of gsn have focused on controlled environments or small numbers of species in natural environments, a broad phylogenetic and biogeographic context could provide insights into potential adaptive benefits of gsn.
We measured gsn on a diverse suite of species (n = 73) across various functional groups and climates‐of‐origin in a common garden to study the phylogenetic and biogeographic/climatic controls on gsn and further assessed the degree to which gsn co‐varied with leaf functional traits and daytime gas exchange rates.
Closely related species were more similar in gsn than expected by chance. Herbaceous species had higher gsn than woody species. Species that typically grow in climates with lower mean annual precipitation – where the fitness cost of water loss should be the highest – generally had higher gsn.
Our results reveal the highest gsn rates in species from environments where neighboring plants compete most strongly for water, suggesting a possible role for the competitive advantage of gsn.
Recommended Citation
Yu K, Goldsmith GR, Wang Y, Anderegg WRL. 2019. Phylogenetic and biogeographic controls of plant nighttime stomatal conductance. New Phytologist, 222, 4, (1778-1788), (2019). https://doi.org/10.1111/nph.15755
Copyright
Wiley
Included in
Forest Biology Commons, Other Forestry and Forest Sciences Commons, Other Life Sciences Commons, Other Plant Sciences Commons, Plant Biology Commons
Comments
This is the accepted version of the following article:
Yu K, Goldsmith GR, Wang Y, Anderegg WRL. 2019. Phylogenetic and biogeographic controls of plant nighttime stomatal conductance. New Phytologist, 222, 4, (1778-1788), (2019). https://doi.org/10.1111/nph.15755
which has been published in final form at https://doi.org/10.1111/nph.15755. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.