Bordered pit structure and vessel wall surface properties. Implications for embolism repairM A Zwieniecki
Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA
Plant Physiol 123:1015-20. 2000
..The maximum pressure difference between water in the lumen and gas in the pit chamber that could be stabilized by this interface was calculated to be within the range of 0.07 to 0.30 MPa...
A potential role for xylem-phloem interactions in the hydraulic architecture of trees: effects of phloem girdling on xylem hydraulic conductanceMaciej A Zwieniecki
Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA
Tree Physiol 24:911-7. 2004
..These results suggest a functional link between phloem and xylem hydraulic systems that is mediated by changes in the ionic content of the cell sap...
Ionic control of the lateral exchange of water between vascular bundles in tomatoMaciej A Zwieniecki
Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA
J Exp Bot 54:1399-405. 2003
..These results indicate that the degree of nutrient-sharing among sectors of a plant may depend on both nutrient concentration and the availability of water in the root zone...
Hydraulic design of pine needles: one-dimensional optimization for single-vein leavesMaciej A Zwieniecki
Arnold Arboretum, Harvard University, 16 Divinity Ave, Cambridge, MA 02138, USA
Plant Cell Environ 29:803-9. 2006
..The needles of P. palustris showed an almost perfect match between predicted and actual hydraulic optimum solution, providing evidence that vein design is a significant factor in the hydraulic design of pine leaves...
Hydraulic design of leaves: insights from rehydration kineticsMaciej A Zwieniecki
Arnold Arboretum, Harvard University, Cambridge, MA 02138, USA
Plant Cell Environ 30:910-21. 2007
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Confronting Maxwell's demon: biophysics of xylem embolism repairMaciej A Zwieniecki
Arnold Arboretum of Harvard University, Cambridge, MA 02138, USA
Trends Plant Sci 14:530-4. 2009
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Hydraulic properties of individual xylem vessels of Fraxinus americanaM A Zwieniecki
Department of Organismic and Evolutionary Biology, Biological Laboratories, Harvard University, 16 Divinity Ave, Cambridge, MA 02138, USA
J Exp Bot 52:257-64. 2001
..95 e(-9) m(2) s(-1)). Estimates of the time needed to displace all of the gas from an air-filled vessel were in the order of 20 min, suggesting that gas removal may not be a major limitation in embolism repair...
Hydrogel control of xylem hydraulic resistance in plantsM A Zwieniecki
Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA
Science 291:1059-62. 2001
..The existence of an ion-mediated response breaks the long-held paradigm of the xylem as a system of inert pipes and suggests a mechanism by which plants may regulate their internal flow regime...
Functional design space of single-veined leaves: role of tissue hydraulic properties in constraining leaf size and shapeMaciej A Zwieniecki
Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Ave, Cambridge, MA 02138, USA
Ann Bot 94:507-13. 2004
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Hydraulic conductivity of red oak (Quercus rubra L.) leaf tissue does not respond to lightF E Rockwell
Department of Organismic and Evolutionary Biology Arnold Arboretum, Harvard University, Cambridge, MA 02138, USA
Plant Cell Environ 34:565-79. 2011
..We conclude that the declines in conductance observed in the HPFM must involve a resistance downstream of the extracellular air space, and that in red oak the hydraulic conductivity of leaf tissue is insensitive to light...
In vivo observation of cavitation and embolism repair using magnetic resonance imagingN M Holbrook
Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA
Plant Physiol 126:27-31. 2001
..These measurements demonstrate that MRI can be used to monitor the functional status of individual xylem vessels, providing the first method to study the process of cavitation and embolism repair in intact plants...
Cell-to-cell pathway dominates xylem-epidermis hydraulic connection in Tradescantia fluminensis (Vell. Conc.) leavesQing Ye
Arnold Arboretum, Harvard University, Cambridge, MA 02138, USA
Planta 227:1311-9. 2008
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The hydraulic conductance of the angiosperm leaf lamina: a comparison of three measurement methodsLawren Sack
Harvard University, Biological Laboratories, 16 Divinity Avenue, Cambridge, MA 02138, USA
J Exp Bot 53:2177-84. 2002
..Accurate, rapid determination of K(lamina) will allow testing of the links between K(lamina), water-use, drought tolerance, and the enormous diversity of leaf form, structure and composition...
Changes in pit membrane porosity due to deflection and stretching: the role of vestured pitsBrendan Choat
Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, MA 02138, USA
J Exp Bot 55:1569-75. 2004
..This provides the first experimental evidence that vestures reduce the probability of air seeding through pit membranes...
Functional analysis of putative genes encoding the PIP2 water channel subfamily in Populus trichocarpaFrancesca Secchi
Arnold Arboretum of Harvard University, Cambridge, USA
Tree Physiol 29:1467-77. 2009
..trichocarpa provides a basic overview of their activity as water channels and will be a useful reference for future physiological studies of plant water relations that use P. trichocarpa as a model system...
Patterns of PIP gene expression in Populus trichocarpa during recovery from xylem embolism suggest a major role for the PIP1 aquaporin subfamily as moderators of refilling processFrancesca Secchi
Arnold Arboretum of Harvard University, Cambridge, MA, USA
Plant Cell Environ 33:1285-97. 2010
..1 and PoptrPIP1.3 genes were up-regulated in response to embolism, but not to water stress, and were down-regulated after embolism removal, suggesting a local ability of plants to sense an embolism presence...
Leaf hydraulic capacity in ferns, conifers and angiosperms: impacts on photosynthetic maximaTim J Brodribb
Dept Plant Science, University of Tasmania, GPO 252 55, Hobart 7000, Australia
New Phytol 165:839-46. 2005
..The data suggest that vessels in the leaves of the angiosperms studied provide them with the flexibility to produce highly conductive leaves with correspondingly high photosynthetic capacities relative to tracheid-bearing species...
Sensing embolism in xylem vessels: the role of sucrose as a trigger for refillingFrancesca Secchi
Arnold Arboretum of Harvard University, BioLabs 3114, 16 Dinivity Ave, Cambridge, MA 02138, USA
Plant Cell Environ 34:514-24. 2011
..The work provides evidence of the ability of plants to sense embolism and suggests that sucrose concentration is the stimulus that allows plants to trigger a biological response to embolism...
Optimal vein density in artificial and real leavesX Noblin
Department of Organismic and Evolutionary Biology, School of Engineering and Applied Sciences, and Arnold Arboretum, Harvard University, Cambridge, MA 02138, USA
Proc Natl Acad Sci U S A 105:9140-4. 2008
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Nitrate control of root hydraulic properties in plants: translating local information to whole plant responseAnna Gorska
Arnold Arboretum, Harvard University, Cambridge, MA 02138, USA
Plant Physiol 148:1159-67. 2008
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Nitrate induction of root hydraulic conductivity in maize is not correlated with aquaporin expressionAnna Gorska
Arnold Arboretum, Harvard University, Cambridge, MA 02138, USA
Planta 228:989-98. 2008
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Daily transpiration rates of woody species on drying soilThomas R Sinclair
Agronomy Physiology Laboratory, University of Florida, Gainesville, 32611 0965, USA
Tree Physiol 25:1469-72. 2005
..26 and 0.37 of that at field capacity, which is comparable to values reported for annual crop plants...
Vulnerability of xylem vessels to cavitation in sugar maple. Scaling from individual vessels to whole branchesPeter J Melcher
Ithaca College, Biology Department, Center for Natural Sciences, New York 14850, USA
Plant Physiol 131:1775-80. 2003
..8 MPa). These data suggest that, in sugar maple, the xylem of the current year can withstand larger xylem tensions than older wood and dominates water delivery to leaves...
Evolution of xylem lignification and hydrogel transport regulationC Kevin Boyce
Department of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637, USA
Proc Natl Acad Sci U S A 101:17555-8. 2004
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Dynamic changes in root hydraulic properties in response to nitrate availabilityVit Gloser
Department of Plant Physiology and Anatomy, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
J Exp Bot 58:2409-15. 2007
..It is proposed that a rapid decrease in root hydraulic resistance in the presence of increased nitrate availability is an important trait that could enhance a plant's ability to compete for nitrate in the soil...
Plant biology: water gateN Michele Holbrook
Nature 425:361. 2003
Low leaf hydraulic conductance associated with drought tolerance in soybeanThomas R Sinclair
Agronomy Department, University of Florida, Gainesville, FL 32611 0950, USA
Physiol Plant 132:446-51. 2008
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