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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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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...