SearchSkip to Search Results
The standard centrifuge method accurately measures vulnerability curves of longvesselled olive stemsDownload
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...
Heterogeneous distribution of pectin epitopes and calcium in different pit types of four angiosperm speciesDownload
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...
Weak tradeoff between xylem safety and xylemspecific hydraulic efficiency across the world’s woody plant speciesDownload
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...
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...