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Plant Biol (Stuttg) 2004; 6(1): 22-29
DOI: 10.1055/s-2003-44712
Original Paper

Georg Thieme Verlag Stuttgart · New York

Effect of Auxin Transport Inhibitors and Ethylene on the Wood Anatomy of Poplar

U. Junghans 1 , R. Langenfeld-Heyser 1 , A. Polle 1 , T. Teichmann 1
  • 1Forstbotanisches Institut, Georg-August-Universität Göttingen, Göttingen, Germany
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Publikationsverlauf

Publikationsdatum:
17. Februar 2004 (online)

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Abstract

The influence of the auxin transport inhibitors naphthylphthalamic acid (NPA) and methyl-2-chloro-9-hydroxyflurene-9-carboxylate (CF), as well as the gaseous hormone ethylene on cambial differentiation of poplar was determined. NPA treatment induced clustering of vessels and increased vessel length. CF caused a synchronized differentiation of cambial cells into either vessel elements or fibres. The vessels in CF-treated wood were significantly smaller and fibre area was increased compared with controls. Under the influence of ethylene, the cambium produced more parenchyma, shorter fibres and shorter vessels than in controls. Since poplar is the model tree for molecular biology of wood formation, the modulation of the cambial differentiation of poplar towards specific cell types opens an avenue to study genes important for the development of vessels or fibres.

Key words

Populus - poplar - xylem differentiation - auxin transport - NPA - morphactin - ethylene

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T. Teichmann

Forstbotanisches Institut
Georg-August-Universität Göttingen

Büsgenweg 2

37077 Göttingen

Germany

eMail: tteichm@gwdg.de

Section Editor: H. Rennenberg