Hydraulic lift in drought-tolerant and -susceptible maize hybrids

By C. Wan, Wenwei Xu, R. Sosebee, S. Machado, T. Archer. Plant and Soil, 2000

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Rooting depth and water use efficiency of tropical maize inbred lines, differing in drought tolerance (2009, background): “Some reports indicate that deep rooting is a drought avoidance strategy in maize: Wan et al. (2000) reported that there were 2.3 to 3.3 times more axile roots (referred to as primary roots) in the deep moist soil layers of two drought-tolerant maize hybrids compared to a drought-sensitive hybrid,…”
Regulation of root water uptake under abiotic stress conditions. (2012, background): “In fact, some plant species are able to transport water from wetter deeper soil to superficial drier soils, a mechanism known as hydraulic lift; this ability could be crucial in some circumstances to tolerate drought stress (Wan et al., 2000).”
Colonisation with the arbuscular mycorrhizal fungus Glomus mosseae (Nicol. & Gerd.) enhanced phosphorus uptake from dry soil in Sorghum bicolor (L.) (2004, background): “It is also possible that hydraulic lift plays a role when only the upper part of a root system is exposed to dry soil (Vetterlein and Marschner, 1993; Wan et al., 2000).”