Comparative axial widening of phloem and xylem conduits in small woody plants

@article{Petit2014ComparativeAW,
  title={Comparative axial widening of phloem and xylem conduits in small woody plants},
  author={Giai Petit and Alan Crivellaro},
  journal={Trees},
  year={2014},
  volume={28},
  pages={915-921}
}
Along the stem axis phloem’s sieve elements increase in diameter basally at rates comparable to those of xylem conduits and in agreement with principles of hydraulic optimization. Plant physiology relies on the efficiency of the two long-distance transport systems of xylem and phloem. Xylem architecture comprises conduits of small dimensions towards the stem apex, where transpiration-induced tensions are the highest along the root-to-leaves hydraulic pathway, and widen basally to minimize the… CONTINUE READING
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