Research Area: Drought

Triggers of tree mortality under drought

Severe droughts have caused widespread tree mortality across many forest biomes with profound effects on the function of ecosystems and carbon balance. Climate change is expected to intensify regional-scale droughts, focusing attention on the physiological basis of drought-induced…

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A water availability gradient reveals the deficit level required to affect traits in potted juvenile Eucalyptus globulus

McKeirnan. AB, Potts. BM, Hovenden. MJ, Brodribb. TJ, Davies. NW, Rodemann. T, McAdam. SAM, O'Reilly Wapstra. JM (2017) A water availability gradient reveals the deficit level required to affect traits in potted juvenile Eucalyptus globulus. Annals of Botany 119: 1043-1052

Drought leading to soil water deficit can have severe impacts on plants. Water deficit may lead to plant water stress and affect growth and chemical traits. Plant secondary metabolite (PSM) responses to water deficit vary between compounds and…

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Assessing the suitability of various screening methods as a proxy for drought tolerance in barley

Hasanuzzaman. Md, Shabala. L, Brodribb. TJ, Zhou. M, Shabala. S (2017) Assessing the suitability of various screening methods as a proxy for drought tolerance in barley. Functional Plant Biology 44:253-266

Plant breeders are in the need for a convenient, reproducible, reliable and rapid screening methods to be used as a proxy for drought tolerance for a large number of genotypes. Addressing this need, we compared different physiological measures…

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Are flowers vulnerable to xylem cavitation during drought?

Zhang F-P, Brodribb TJ (2017) Are flowers vulnerable to xylem cavitation during drought? Proc. R. Soc. B 284:20162642. http://dx.doi.org/10.1098/rspb.2016.2642

Water stress is known to cause xylem cavitation in the leaves, roots and stems of plants, but little is known about the vulnerability of flowers to xylem damage during drought. This is an important gap in our understanding…

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Uprooting an abscisic acid paradigm: Shoots are the primary source

In the past, a conventional wisdom has been that abscisic acid (ABA) is a xylem-transported hormone that is synthesized in the roots, while acting in the shoot to close stomata in response to a decrease in plant water…

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Assessing the suitability of various screening methods as a proxy for drought tolerance in barley

Md. HasanuzzamanA,C, Lana ShabalaA, Tim J. BrodribbB, Meixue ZhouA and Sergey Shabala (2016) Assessing the suitability of various screening methods as a proxy for drought tolerance in barley. Functional Plant Biology http://dx.doi.org/10.1071/FP16263

Plant breeders are in the need for a convenient, reproducible, reliable and rapid screening methods to be used as a proxy for drought tolerance for a large number of genotypes. Addressing this need, we compared different physiological measures…

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Linking turgor with ABA biosynthesis: implications for stomatal responses to vapour pressure deficit across land plants

SAM McAdam, TJ Brodribb (2016) Linking turgor with ABA biosynthesis: implications for stomatal responses to vapour pressure deficit across land plants. Plant physiology, DOI:10.1104/pp.16.00380

Stomatal responses to changes in vapour pressure deficit (VPD) constitute the predominant form of daytime gas exchange regulation in plants. Stomatal closure in response to increased VPD is driven by the rapid up-regulation of foliar ABA biosynthesis and…

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An eco‐climatic framework for evaluating the resilience of vegetation to water deficit

Mitchell, P. J., O'Grady, A. P., Pinkard, E. A., Brodribb, T. J., Arndt, S. K., Blackman, C. J., Duursma, R. A., Fensham, R. J., Hilbert, D. W., Nitschke, C. R., Norris, J., Roxburgh, S. H., Ruthrof, K. X. and Tissue, D. T. (2016), An ecoclimatic framework for evaluating the resilience of vegetation to water deficit. Glob Change Biol. doi:10.1111/gcb.13177

The surge in global efforts to understand the causes and consequences of drought on forest ecosystems has tended to focus on specific impacts such as mortality. We propose an ecoclimatic framework that takes a broader view of the…

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