Convergent xylem widening among organs across diverse woody seedlings

Mengying Zhong, Pilar Castro-Díez, Jean Philippe Puyravaud, Frank J. Sterck, Johannes H.C. Cornelissen

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Xylem conduit diameter (D max ) of woody angiosperm adults scales with plant size and widens from the stem apex downwards. We hypothesized that, notwithstanding relative growth rate (RGR), growth form or leaf habit, woody seedling conduit D max scales linearly with plant size across species; this scaling should be applicable to all vegetative organs, with consistent conduit widening from leaf via stem to main root and coupling with whole-leaf area and whole-stem xylem area. To test these hypotheses, organ-specific xylem anatomy traits and size-related traits in laboratory-grown seedlings were analyzed across 55 woody European species from cool-temperate and Mediterranean climates. As hypothesized, conduit D max of each organ showed similar scaling with plant size and consistent basipetal widening from the leaf midvein via the stem to the main root across species, independently of growth form, RGR and leaf habit. We also found a strong correlation between D max and average leaf area, and between stem xylem area and whole-plant leaf area. We conclude that seedlings of ecologically wide-ranging woody species converge in their allometric scaling of conduit diameters within and across plant organs. These relationships will contribute to modeling of water transport in woody vegetation that accounts for the whole life history from the trees’ regeneration phase to adulthood.

LanguageEnglish
Pages1873-1882
JournalNew Phytologist
Volume222
Issue number4
Early online date11 Feb 2019
DOIs
Publication statusPublished - Jun 2019

Fingerprint

Xylem
Seedlings
xylem
stems
seedlings
Growth
leaf area
Habits
leaves
Angiosperms
Plant Leaves
Climate
Regeneration
plant organs
Anatomy
Mediterranean climate
adulthood
temperate zones
Angiospermae
life history

Keywords

  • leaf area
  • organs
  • plant size
  • stem height
  • tissue density
  • vessel diameter
  • xylem anatomy

Cite this

Zhong, M., Castro-Díez, P., Puyravaud, J. P., Sterck, F. J., & Cornelissen, J. H. C. (2019). Convergent xylem widening among organs across diverse woody seedlings. New Phytologist, 222(4), 1873-1882. https://doi.org/10.1111/nph.15734
Zhong, Mengying ; Castro-Díez, Pilar ; Puyravaud, Jean Philippe ; Sterck, Frank J. ; Cornelissen, Johannes H.C. / Convergent xylem widening among organs across diverse woody seedlings. In: New Phytologist. 2019 ; Vol. 222, No. 4. pp. 1873-1882.
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Zhong, M, Castro-Díez, P, Puyravaud, JP, Sterck, FJ & Cornelissen, JHC 2019, 'Convergent xylem widening among organs across diverse woody seedlings', New Phytologist, vol. 222, no. 4, pp. 1873-1882. https://doi.org/10.1111/nph.15734

Convergent xylem widening among organs across diverse woody seedlings. / Zhong, Mengying; Castro-Díez, Pilar; Puyravaud, Jean Philippe; Sterck, Frank J.; Cornelissen, Johannes H.C.

In: New Phytologist, Vol. 222, No. 4, 06.2019, p. 1873-1882.

Research output: Contribution to journalArticleAcademicpeer-review

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Zhong M, Castro-Díez P, Puyravaud JP, Sterck FJ, Cornelissen JHC. Convergent xylem widening among organs across diverse woody seedlings. New Phytologist. 2019 Jun;222(4):1873-1882. https://doi.org/10.1111/nph.15734