Smaller, faster stomata: scaling of stomatal size, rate of response, and stomatal conductance
By P. Drake, R. Froend, Peter Franks. Journal of Experimental Botany, 2013
602 citations recorded by the source corpus.
Maximum and minimum stomatal conductance, as well as stomatal size and rate of response, are known to vary widely across plant species, but the functional relationship between these static and dynamic stomatal properties is unknown. The objective of this study was to test three hypotheses: (i) operating stomatal conductance under standard conditions (g op) correlates with minimum stomatal conductance prior to morning light [g min(dawn)]; (ii) stomatal size (S) is negatively correlated with g op and the maximum rate of stomatal opening in response to light, (dg/dt)max; and (iii) g op correlates negatively with instantaneous water-use efficiency (WUE) despite positive correlations with maximum rate of carboxylation (Vc max) and light-saturated rate of electron transport (J max). Using five closely related species of the genus Banksia, the above variables were measured, and it was found that all three hypotheses were supported by the results. Overall, this indicates that leaves built for higher rates of gas exchange have smaller stomata and faster dynamic characteristics. With the aid of a stomatal control model, it is demonstrated that higher g op can potentially expose plants to larger tissue water potential gradients, and that faster stomatal response times can help offset this risk.
Subfields: Ecology, Evolution, Behavior and Systematics, Global and Planetary Change, Plant Science
View Paper: https://www.semanticscholar.org/paper/663a6c48e239ef26c01793f14f9769588cee8974
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In Ecology, Evolution, Behavior and Systematics
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Citations in the corpus
- Traits to stay, traits to move: a review of functional traits to assess sensitivity and adaptive capacity of temperate and boreal trees to climate change (2016, unknown): “correlated (Drake et al. 2013; Raven 2014).”
- The scaling of genome size and cell size limits maximum rates of photosynthesis with implications for ecological strategies (2019, methodology): “Of the species for which stomatal response times were measured by McAusland et al. (2016) and Drake et al. (2013), twelve were included in the Kew Plant DNA C-Values database.”
- Stomatal Size, Speed, and Responsiveness Impact on Photosynthesis and Water Use Efficiency1[C] (2014, background): “larger stomata, an observation that has been explained in the context of surface to volume ratios and 251 the requirement for solute transport to drive movement (Hetherington and Woodward, 2003; Franks 252 and Beerling, 2009; Drake et al., 2013).”