Publications by Samuel C.V. Martins

Stomatal dynamics are limited by leaf hydraulics in ferns and conifers: results from simultaneous measurements of liquid and vapour fluxes in leaves

Martins, S. C. V., McAdam, S. A. M., Deans, R. M., DaMatta, F. M., and Brodribb, T. J. (2016) Stomatal dynamics are limited by leaf hydraulics in ferns and conifers: results from simultaneous measurements of liquid and vapour fluxes in leaves. Plant, Cell and Environment, 39: 694–705. doi: 10.1111/pce.12668.

Stomatal responsiveness to vapour pressure deficit (VPD) results in continuous regulation of daytime gas-exchange directly influencing leaf water status and carbon gain. Current models can reasonably predict steady-state stomatal conductance (gs) to changes in VPD but the gsdynamics between…

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Conifer species adapt to low-rainfall climates by following one of two divergent pathways

doi/10.1073/pnas.1407930111

Water stress is one of the primary selective forces in plant evolution. There are characters often cited as adaptations to water stress, but links between the function of these traits and adaptation to drying climates are tenuous. Here…

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Understanding the low photosynthetic rates of sun and shade coffee leaves: bridging the gap on the relative roles of hydraulic, diffusive and biochemical constraints to photosynthesis.

Martins, S. C. V, Galmés, J., Cavatte, P. C., Pereira, L. F., Ventrella, M. C., & Damatta, F. M. (2014). Understanding the low photosynthetic rates of sun and shade coffee leaves: bridging the gap on the relative roles of hydraulic, diffusive and biochemical constraints to photosynthesis. PloS One, 9(4), e95571. doi:10.1371/journal.pone.0095571

It has long been held that the low photosynthetic rates (A) of coffee leaves are largely associated with diffusive constraints to photosynthesis. However, the relative limitations of the stomata and mesophyll to the overall diffusional constraints to photosynthesis,…

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Improving the estimation of mesophyll conductance to CO2: on the role of electron transport rate correction and respiration.

Martins, S. C. V, Galmés, J., Molins, A., & DaMatta, F. M. (2013). Improving the estimation of mesophyll conductance to CO₂: on the role of electron transport rate correction and respiration. Journal of Experimental Botany, 64(11), 3285–98.

Mesophyll conductance (gm) can markedly limit photosynthetic CO2 assimilation and is required to estimate the parameters of the Farquhar–von Caemmerer–Berry (FvCB) model properly. The variable J (electron transport rate) is the most frequently used method for estimating gm,…

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