U.G. Hacke, M.D. Venturas, E.D. MacKinnon, A.L. Jacobsen, J.S. Sperry, R. B. Pratt (early view)
The standard centrifuge method accurately measures vulnerability curves of long-vesselled olive stems. New Phytologist. PDF

J. Laur, U.G. Hacke (2014)
Exploring Picea glauca aquaporins in the context of needle water uptake and xylem refilling. New Phytologist. PDF

S. Mayr, P. Schmid, J. Laur, S. Rosner, K. Charra-Vaskou, B. Daemon, U.G. Hacke (2014)
Uptake of water via branches helps timberline conifers refill embolized xylem in late winter. Plant Physiology 164: 1731–1740. PDF

U.G. Hacke (2014)
Variable plant hydraulic conductance. Tree Physiology 34: 105-108. Full Text

U.G. Hacke (2014)
Irradiance-induced changes in hydraulic architecture. Botany 92: 437–442. PDF


L. Plavcová, S. Jansen, M. Klepsch, U.G. Hacke (2013)
Nobody’s perfect: can irregularities in pit structure influence vulnerability to cavitation? Frontiers in Plant Science Vol 4 Article 453 - PDF

S.G. Schreiber, C. Ding, A. Hamann, U.G. Hacke, B.R. Thomas, J.S. Brouard (2013)
Frost hardiness vs. growth performance in trembling aspen: an experimental test of assisted migration. Journal of Applied Ecology 50: 939-949 - PDF

J. Laur, U.G. Hacke (2013)
Transpirational demand affects aquaporin expression in poplar roots. Journal of Experimental Botany 64: 2283–2293 - PDF

W.R.L. Anderegg, L. Plavcová, L.D.L. Anderegg, U.G. Hacke, J.A. Berry, C.B. Field (2013)
Drought’s Legacy: Multi-year hydraulic deterioration underlies widespread aspen forest die-off and portends increased future risk*. Global Change Biology 19: 1188-1196 - PDF

*This paper was recommended by F1000Prime.

S.G. Schreiber, A. Hamann, U.G. Hacke, B.R. Thomas (2013)
Sixteen years of winter stress: an assessment of cold hardiness, growth performance and survival of hybrid poplar clones at a boreal planting site. Plant, Cell and Environment 36: 419-428 - PDF

L. Plavcová, U.G. Hacke, A.M. Almeida-Rodriguez, E. Li, C.J. Douglas (2013)
Gene expression patterns underlying changes in xylem structure and function in response to increased nitrogen availability in hybrid poplar. Plant, Cell and Environment 36: 186-199. - PDF


B. Choat et al. (2012) Global convergence in the vulnerability of forests to drought. Nature 491: 752-755. - Abstract

L. Plavcová, U.G. Hacke (2012)
Phenotypic and developmental plasticity of xylem in hybrid poplar saplings subjected to experimental drought, nitrogen fertilization and shading. Journal of Experimental Botany 63: 6481-6491 - PDF

A.L. Jacobsen, R.B. Pratt, M.F. Tobin, U.G. Hacke, F.W. Ewers (2012)
A global analysis of xylem vessel length in woody plants. American Journal of Botany 99: 1583-1591. - PDF

Meetings: New research on plant–water relations examines the molecular, structural, and physiological mechanisms of plant responses to their environment (2012) New Phytologist 196: 345-348. - PDF

A.M. Almeida-Rodriguez, U.G. Hacke (2012)
Cellular localization of aquaporin mRNA in hybrid poplar stems. American Journal of Botany 99: 1249-1254. Cover illustration. - PDF - Appendices


L. Plavcová, U.G. Hacke (2011)
Heterogeneous distribution of pectin epitopes and calcium in different pit types of four angiosperm species. New Phytologist  192: 885-897.- PDF

A. Almeida-Rodriguez, U.G. Hacke, J. Laur (2011)
Influence of evaporative demand on aquaporin expression and root hydraulics in hybrid poplar. Plant, Cell and Environment 34: 1318-1331.- PDF

L. Plavcová, U.G. Hacke, J.S. Sperry (2011)
Linking irradiance-induced changes in pit membrane ultrastructure with xylem vulnerability to cavitation. Plant, Cell and Environment 34: 501-513.- PDF

S.G. Schreiber, U.G. Hacke, A. Hamann, B.R. Thomas (2011)
Genetic variation of hydraulic and wood anatomical traits in hybrid poplar and trembling aspen. New Phytologist 190: 150-160.- PDF


J. Cai, U. Hacke, S. Zhang, M.T. Tyree (2010)
What happens when stems are embolized in a centrifuge? Testing the cavitron theory. Physiologia Plantarum 140: 311-320. - PDF

U.G. Hacke, L. Plavcová, A. Almeida-Rodriguez, S. King-Jones, W. Zhou, J.E.K. Cooke (2010)
Influence of nitrogen fertilization on xylem traits and aquaporin expression in stems of hybrid poplar. Tree Physiology  30: 1016-1025. - PDF

A.L. Schoonmaker, U.G. Hacke, S.M. Landhäusser, V.J. Lieffers, M.T. Tyree (2010)
Hydraulic acclimation to shading in Boreal conifers of varying shade tolerance. Plant, Cell and Environment 33: 382-393. - PDF


U.G. Hacke, S. Jansen (2009)
Embolism resistance of three boreal conifer species varies with pit structure. New Phytologist 182: 675–686. - PDF

U.G. Hacke, A.L. Jacobsen, R.B. Pratt (2009)
Xylem function of aridland shrubs from California, USA: an ecological and evolutionary analysis. Plant, Cell and Environment 32: 1324–1333. - PDF


Y. Li, J.S. Sperry, H. Taneda, S.E. Bush, U.G. Hacke (2008)
Evaluation of centrifugal methods for measuring xylem cavitation in conifers, diffuse- and ring-porous angiosperms. New Phytologist 177: 558–568. - PDF


U.G. Hacke, J.S. Sperry, T. Feild, Y. Sano, E.H. Sikkema, J. Pittermann (2007)
Water transport in vesselless angiosperms: conducting efficiency and cavitation safety. International Journal of Plant Science 168: 1113-1126. - PDF

J.S. Sperry, U.G. Hacke, T. Feild, Y. Sano, E.H. Sikkema (2007)
Hydraulic consequences of vessel evolution in angiosperms. International Journal of Plant Science 168: 1127-1139. - PDF


J.S. Sperry, U.G. Hacke, J. Pittermann (2006)
Size and function in conifer tracheids and angiosperm vessels. American Journal of Botany 93: 1490-1500. - PDF

S. Mayr, U. Hacke, P. Schmid, F. Schwienbacher, A. Gruber (2006)
Frost drought in conifers at the alpine timberline: xylem dysfunction and adaptations. Ecology 87: 3175–3185.

J. Pittermann, J.S. Sperry, J.K. Wheeler, U.G. Hacke, E. Sikkema (2006)
Mechanical reinforcement against tracheid implosion compromises the hydraulic efficiency of conifer xylem. Plant, Cell and Environment 29: 1618-1628. - PDF

J. Pittermann, J.S. Sperry, U.G. Hacke, J.K. Wheeler, E. Sikkema (2006)
Inter-tracheid pitting and the hydraulic efficiency of conifer wood: the role of tracheid allometry and cavitation protection. American Journal of Botany 93: 1265-1273. - PDF

U.G. Hacke, J.S. Sperry, J.K. Wheeler, L. Castro (2006)
Scaling of angiosperm xylem structure with safety and efficiency. Tree Physiology 26: 689-701. - PDF

R.N. Addington, L.A. Donovan, R.J. Mitchell, J.M. Vose, S.D. Pecot, S.B. Jack, U.G. Hacke, J.S. Sperry, R. Oren (2006)
Adjustments in hydraulic architecture of Pinus palustris maintain similar stomatal conductance in xeric and mesic habitats. Plant, Cell and Environment 29: 535-545. - PDF


J. Pittermann, J.S. Sperry, U.G. Hacke, J.K. Wheeler, E. Sikkema (2005)
Torus-margo pits help conifers compete with angiosperms. Science 310: 1924. - PDF

U.G. Hacke, J.S. Sperry, J. Pittermann (2005)
Efficiency vs. safety trade-offs for water conduction in angiosperm vessels vs. gymnosperm tracheids. In: Vascular Transport in Plants (eds. N.M. Holbrook, M. Zwieniecki). Elsevier, Amsterdam, pp 333-353.

J.S. Sperry, U.G. Hacke, J.K. Wheeler (2005)
Comparative analysis of end wall resistance in xylem conduits. Plant, Cell and Environment 28: 456-465. - PDF

J.K. Wheeler, J.S. Sperry, U.G. Hacke, N. Hoang (2005)
Inter-vessel pitting and cavitation in woody Rosaceae and other vesseled plants: a basis for a safety vs. efficiency trade-off in xylem transport. Plant, Cell and Environment 28: 800-812. - PDF


U.G. Hacke, J.S. Sperry, J. Pittermann (2004)
Analysis of circular bordered pit function II. Gymnosperm tracheids with torus-margo pit membranes. American Journal of Botany 91: 386-400. - PDF

J.S. Sperry, U.G. Hacke (2004)
Analysis of circular bordered pit function I. Angiosperm vessels with homogenous pit membranes. American Journal of Botany 91: 369-385. - PDF

Angeles G, Bond B, Boyer JS, Brodribb T, Brooks JR, Burns MJ, Cavender-Bares J, Clearwater M, Cochard H, Comstock J, Davis SD, Domec J-C, Donovan L, Ewers F, Gartner B, Hacke U, Hinckley T, Holbrook NM, Jones HG, Kavanagh K, Law B, López-Portillo J, Lovisolo C, Martin T, Martínez-Vilalta J, Mayr S, Meinzer FC, Melcher P, Mencuccini M, Mulkey S, Nardini A, Neufeld HS, Passioura J, Pockman WT, Pratt RB, Rambal S, Richter H, Sack L, Salleo S, Schubert A, Schulte P, Sparks JP, Sperry J, Teskey R, Tyree M. (2004)
The Cohesion-Tension Theory. New Phytologist 163: 451-452. - PDF


J.S. Sperry, V. Stiller, U.G. Hacke (2003)
Xylem hydraulics and the soil-plant-atmosphere continuum: opportunities and unresolved issues. Agronomy Journal 95: 1362-1370. - PDF

U.G. Hacke, J.S. Sperry (2003)
Limits of xylem refilling under negative pressure in Laurus nobilis and Acer negundo. Plant, Cell and Environment 26: 303-311. - PDF


J.S. Sperry, U.G. Hacke (2002)
Desert shrub water relations with respect to soil characteristics and plant functional type. Functional Ecology 16: 367-378. - PDF

J.S. Sperry, U.G. Hacke, R. Oren, J.P. Comstock (2002)
Water deficits and hydraulic limits to leaf water supply. Plant, Cell and Environment 25: 251-263. - PDF

J.S. Sperry, V. Stiller, U.G. Hacke (2002)
Soil water uptake and water transport through root systems. In: Plant Roots: The Hidden Half, 3rd ed. (eds. Y. Waisel, A. Eshel, U. Kafkafi). Marcel Dekker, New York, NY, pp 663-681.


U.G. Hacke, J.S. Sperry (2001)
Functional and ecological xylem anatomy. Perspectives in Plant Ecology, Evolution and Systematics 4: 97-115. - PDF

U.G. Hacke, J.S. Sperry, W.T. Pockman, S.D. Davis, K. McCulloh (2001)
Trends in wood density and structure are linked to prevention of xylem implosion by negative pressure. Oecologia 126: 457-461. - PDF

U.G. Hacke, V. Stiller, J.S. Sperry, J. Pittermann, K. McCulloh (2001)
Cavitation fatigue: embolism and refilling cycles can weaken the cavitation resistance of xylem. Plant Physiology 125: 779-786. - PDF


U.G. Hacke, J.S. Sperry, B.E. Ewers, D.S. Ellsworth, K.V.R. Schäfer, R. Oren (2000)
Influence of soil porosity on water use in Pinus taeda. Oecologia 124: 495-505. - PDF

U.G. Hacke, J.S. Sperry, J. Pittermann (2000)
Drought experience and cavitation resistance in six shrubs from the Great Basin, Utah. Basic and Applied Ecology 1: 31-41. - PDF


S.D. Davis, J.S. Sperry, U.G. Hacke (1999)
The relationship between xylem conduit diameter and cavitation caused by freezing. American Journal of Botany 86: 1367-1372. - PDF


U. Hacke, J.J. Sauter (1996)
Drought-induced xylem dysfunction in petioles, branches, and roots of Populus balsamifera L. and Alnus glutinosa (L.) Gaertn. Plant Physiology 111: 413-417. - PDF

U. Hacke, J.J. Sauter (1996)
Xylem dysfunction during winter and recovery of hydraulic conductivity in diffuse-porous and ring-porous trees. Oecologia 105: 435-439. - PDF


U. Hacke, J.J. Sauter (1995)
Vulnerability of xylem to embolism in relation to leaf water potential and stomatal conductance in Fagus sylvatica f. purpurea and Populus balsamifera. Journal of Experimental Botany 46: 1177-1183. - PDF