Year: 2011

Stomatal (mis)behaviour

Brodribb TJ, McAdam SAM. 2011. Stomatal (mis)behaviour. Tree Physiology 31(10): 1039-1040.

When stomata first evolved they initiated the greening of terrestrial earth, and now more than 400 million years later these simple bi-cellular valves in the leaf surface regulate global fluxes of water and carbon. Despite their importance and…

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Fossil evidence for low gas exchange capacities for Early Cretaceous angiosperm leaves

Feild TS, Upchurch GR, Chatelet DS, Brodribb TJ, Grubbs KC, Samain MS, Wanke S. 2011. Fossil evidence for low gas exchange capacities for Early Cretaceous angiosperm leaves. Paleobiology 37 (2): 195-213

The photosynthetic gas exchange capacities of early angiosperms remain enigmatic. Nevertheless, many hypotheses about the causes of early angiosperm success and how angiosperms influenced Mesozoic ecosystem function hinge on understanding the maximum capacity for early angiosperm metabolism. We…

Water supply and demand remain balanced during leaf acclimation of Nothofagus cunninghamii trees

Brodribb TJ, Jordan GJ. 2011. Water supply and demand remain balanced during leaf acclimation of Nothofagus cunninghamii trees. New Phytologist 192 (2): 437-448

• Higher leaf vein density (Dvein) enables higher rates of photosynthesis because enhanced water transport allows higher leaf conductances to CO2 and water. If the total cost of leaf venation rises in proportion to the density of minor…

Minimum hydraulic safety leads to maximum water-use efficiency in a forage grass

Holloway-Phillips MM, Brodribb TJ. 2011. Minimum hydraulic safety leads to maximum water-use efficiency in a forage grass. Plant Cell and Environment 34: 302-313.

Understanding how water-use regulation relates to biomass accumulation is imperative for improving crop production in water-limited environments. Here, we examine how the vulnerability of xylem to water stress-induced cavitation and the coordination between water transport capacity and assimilation…

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Contrasting hydraulic regulation in closely related forage grasses: implications for plant water use

Holloway-Phillips MM, Brodribb TJ (2011) Contrasting hydraulic regulation in closely related forage grasses: implications for plant water use. Functional Plant Biology 38, 594–605.

Plant traits that improve crop water use efficiency are highly sought after but difficult to isolate. Here, we examine the integrated function of xylem and stomata in closely related forage grasses to determine whether quantitative differences in water…

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Fossil evidence for Cretaceous escalation in angiosperm leaf vein evolution

Feild, T. S., T. J. Brodribb, A. Iglesias, D. S. Chatelet, A. Baresch, G. R. Upchurch, Jr., B. Gomez, B. A. R. Mohr, C. Coiffard, J. Kvacek, and C. Jaramillo. 2011. Fossil evidence for Cretaceous escalation in angiosperm leaf vein evolution. Proceedings of the National Academy of Sciences 108 (20): 8363-8366.

The flowering plants that dominate modern vegetation possess leaf gas exchange potentials that far exceed those of all other living or extinct plants. The great divide in maximal ability to exchange CO2 for water between leaves of nonangiosperms…

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Two measures of leaf capacitance: insights into the water transport pathway and hydraulic conductance in leaves

Blackman CJ, Brodribb TJ. 2011.Two measures of leaf capacitance:insights into the water transport pathway and hydraulic conductance in leaves. Functional Plant Biology 38 (2): 118-126.

The efficiency and stress tolerance of leaf water transport are key indicators of plant function, but our ability to assess these processes is constrained by gaps in our understanding of the water transport pathway in leaves.Amajor challenge is…

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Continental-scale climatic drivers of growth ring variability in an Australian conifer

Bowman, D. M. J. S., Prior, L. D., Tng, D. Y. P., Hua, Q., Brodribb, T. J. (2011). Continental-scale climatic drivers of growth ring variability in an Australian conifer. Trees; Structure and Function, 25(5), 925-934

Callitris is Australia’s most successful and drought tolerant conifer genus. Callitris species are distributed across a huge geographical range from rainforest to arid zones, and hence they provide a rare opportunity to view plant growth trends across the…

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Passive origins of stomatal control in vascular plants

Brodribb T.J., McAdam S.A.M. (2011) Passive origins of stomatal control in vascular plants. Science, 331: 581-585.

Carbon and water flow between plants and the atmosphere is regulated by the opening and closing of minute stomatal pores in surfaces of leaves. By changing the aperture of stomata, plants regulate water loss and photosynthetic carbon gain…

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