Chemical modification of secondary xylem under tensile stress in the stem of Liriodendron tulipifera

Dahyun Moon, Soo Jeong Shin, Joon Weon Choi, Jong Sug Park, Wook Kim, Mi Kwon

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Tension wood is a specialized tissue that develops in the upper side of leaning stem and branches in angiosperm. In yellow poplar, tension wood does not form a G-layer, which is one of the most characteristic features of typical tension wood. In order to determine whether the chemical modification associated with tension wood formation in yellow poplar is consistent with those of G-layer-forming angiosperm species, tension wood was induced via mechanical bending treatment for 7 and 14 days in the stem of 2-year-old yellow poplars, and its major cell wall components were analyzed. Whereas the cellulose contents of the tension wood were higher than those in opposite wood, its lignin contents were lower; the result is consistent with that seen in other angiosperm tension wood. Interestingly, the lignin contents differed between tension wood and opposite wood sides at 7 days in the bent sample, but became similar levels to each other at later stages of tension wood formation. The S/G ratio of tension wood was also higher than that of opposite wood. Additionally, the composition of hemicelluloses (glucomannan and xylan) was altered significantly under tensile stress conditions in the yellow poplar stem. Therefore, the majority of the cell wall polymers were altered significantly in the tension wood relative to those in opposite wood, and these changes appear to be developmentally regulated, regardless of the existence of the G-layer in the fiber.

Original languageEnglish
Pages (from-to)53-59
Number of pages7
JournalForest Science and Technology
Volume7
Issue number2
DOIs
Publication statusPublished - 2011

Fingerprint

tension wood
secondary xylem
Liriodendron tulipifera
tensile stress
xylem
stem
stems
Angiospermae
angiosperm
lignin
chemical
xylan
cell wall components
hemicellulose
branches
polymers
cellulose

Keywords

  • Cellulose
  • Glucomannan
  • Hemicelluloses
  • Lignin
  • Tension wood
  • Xylan
  • Yellow poplar

ASJC Scopus subject areas

  • Forestry
  • Management, Monitoring, Policy and Law

Cite this

Chemical modification of secondary xylem under tensile stress in the stem of Liriodendron tulipifera. / Moon, Dahyun; Shin, Soo Jeong; Choi, Joon Weon; Park, Jong Sug; Kim, Wook; Kwon, Mi.

In: Forest Science and Technology, Vol. 7, No. 2, 2011, p. 53-59.

Research output: Contribution to journalArticle

Moon, Dahyun ; Shin, Soo Jeong ; Choi, Joon Weon ; Park, Jong Sug ; Kim, Wook ; Kwon, Mi. / Chemical modification of secondary xylem under tensile stress in the stem of Liriodendron tulipifera. In: Forest Science and Technology. 2011 ; Vol. 7, No. 2. pp. 53-59.
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