Noel Michele Holbrook
Post - Professor
Harvard University Address
Holbrook Lab, Biological Laboratories,
16 Divinity Ave,
Cambridge, MA 02138
USA
Main research topics
Noel Michele Holbrook is interested in whole-plant physiology, especially with regards to xylem and phloem transport and the coordination of hydraulic and stomatal control over water flux through plants.
Rattan hydraulics: In most climbing plants, xylem structure provides a low-resistance pathway for water compared to cloesely related non-climbers. As a consequence many climbers have large-diameter vessels. The ratten hydraulics project, seeks to establish a plausible scenario for the evolution of an unusual vasculature in certain rattan taxa.
Xylem Cavitation and Repair: Our aim is to establish a mechanism for embolism removal from the water-transport system of vascular plants. It is thought that vessel embolism is a reversible phenomenon made possible by the interaction of xylem parenchyma.
Nolana Mollis in the Atacama Desert, Chile: Work focuses on the physiological and morphological features of desert plants, and how this enables them to survive in extreme desert conditions.
Selected publications
Thompson, M.V. and N.M. Holbrook. 2003. Scaling phloem transport: water potential equilibrium and osmoregulatory flow. Plant, Cell and Environment 26, 1561-1577
Melcher, P.J., M.A. Zwieniecki, and N.M. Holbrook. 2003. Vulnerability of xylem vessels to cavitation in Acer saccharum (Marsh.): Scaling from individual vessels to whole branches. Plant Physiology 131, 1775-1780
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