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Skip to Search Results- 7Cavitation
- 6Xylem
- 2Basal Angiosperm Physiology
- 2Ecological Wood Anatomy
- 2Embolism
- 2Hydraulic conductivity
- 4Hacke, U.G.
- 2 Feild, Taylor S.
- 2 Pittermann, Jarmila
- 2 Sano, Yuzou
- 2 Sikkema, Elzard H.
- 2Hacke, Uwe G.
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Genetic variation of hydraulic and wood anatomical traits in hybrid poplar and trembling aspen
Download2011
Hacke, U.G., Schreiber, S.G., Hamann, A., Thomas, B.R.
•Intensive forestry systems and breeding programs often include either native aspen or hybrid poplar clones, and performance and trait evaluations are mostly made within these two groups. Here, we assessed how traits with potential adaptive value varied within and across these two plant groups....
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Heterogeneous distribution of pectin epitopes and calcium in different pit types of four angiosperm species
Download2011
Intervessel pits act as safety valves that prevent the spread of xylem embolism. Pectin–calcium crosslinks within the pit membrane have been proposed to affect xylem vulnerability to cavitation. However, as the chemical composition of pit membranes is poorly understood, this hypothesis has not...
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The standard centrifuge method accurately measures vulnerability curves of longvesselled olive stems
Download2015
Venturas, M.D., Sperry, J.S., Hacke, U.G., Pratt, R.B. , Jacobsen, J.S., MacKinnon, E.D.
The standard centrifuge method has been frequently used to measure vulnerability to xylem cavitation. This method has recently been questioned. It was hypothesized that open vessels lead to exponential vulnerability curves, which were thought to be indicative of measurement artifact. We tested...
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2007
Sikkema, E.H., Field, T., Pittermann, J., Sano, Y., Sperry, J.S., Hacke, U.G.
Two structure-function hypotheses were tested for vesselless angiosperm wood. First, vesselless angiosperm wood should have much higher flow resistance than conifer wood because angiosperm tracheids lack low-resistance torus-margo pits. Second, vesselless wood ought to be exceptionally safe from...
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2007
Hacke, Uwe G., Sperry, John S., Sikkema, Elzard H., Pittermann, Jarmila, Feild, Taylor S., Sano, Yuzou
Two structure‐function hypotheses were tested for vesselless angiosperm wood. First, vesselless angiosperm wood should have much higher flow resistance than conifer wood because angiosperm tracheids lack low‐resistance torus‐margo pits. Second, vesselless wood ought to be exceptionally safe from...
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2007
Sano, Yuzou, Pittermann, Jarmila, Sikkema, Elzard H., Hacke, Uwe G., Sperry, John S., Feild, Taylor S.
Two structure‐function hypotheses were tested for vesselless angiosperm wood. First, vesselless angiosperm wood should have much higher flow resistance than conifer wood because angiosperm tracheids lack low‐resistance torus‐margo pits. Second, vesselless wood ought to be exceptionally safe from...
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Weak tradeoff between xylem safety and xylemspecific hydraulic efficiency across the world’s woody plant species
Download2016
Maherali, H., Cao, K-.F., Schreiber, S.G., Brodribb, T.J., Westoby, M., Hacke, U.G., Jacobsen, A.L., Lens, F., Choat, B., Wright, I.J., Pittermann, J., Gleason, S., Bhaskar, R., Nardini, A., Morris, H., Mayr, S., Bucci, S.J., Mencuccini, M., Johnson, D.M., Mitchell, P.J., Fan, Z-.X., Sperry, J.S., Delzon, S., Zanne, A.E., Martínez-Vilalta, J., Cochard, H., Plavcová, L., McCulloh, K.A., Jansen, S., Domec, J-.C., Pratt, R.B., Feild, T.S.
The evolution of lignified xylem allowed for the efficient transport of water under tension, but also exposed the vascular network to the risk of gas emboli and the spread of gas between xylem conduits, thus impeding sap transport to the leaves. A well-known hypothesis proposes that the safety of...