Vulnerability curves by centrifugation: is there an open vessel artefact, and are 'r' shaped curves necessarily invalid?

@article{Sperry2012VulnerabilityCB,
  title={Vulnerability curves by centrifugation: is there an open vessel artefact, and are 'r' shaped curves necessarily invalid?},
  author={John S. Sperry and Mairgareth A Christman and Jos{\'e} M Torres-Ruiz and Haruhiko Taneda and Duncan D. Smith},
  journal={Plant, cell & environment},
  year={2012},
  volume={35 3},
  pages={601-10}
}
Vulnerability curves using the 'Cavitron' centrifuge rotor yield anomalous results when vessels extend from the end of the stem segment to the centre ('open-to-centre' vessels). Curves showing a decline in conductivity at modest xylem pressures ('r' shaped) have been attributed to this artefact. We determined whether the original centrifugal method with its different rotor is influenced by open-to-centre vessels. Increasing the proportion of open-to-centre vessels by shortening stems had no… CONTINUE READING
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