Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Exogenously applied 24-epi brassinolide reduces lignification and alters cell wall carbohydrate biosynthesis in the secondary xylem of Liriodendron tulipifera

Authors
Jin, HyunjungDo, JihyeShin, Soo-JeongChoi, Joon WeonChoi, Young ImKim, WookKwon, Mi
Issue Date
5월-2014
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Yellow poplar; Liriodendron tulipifera; Magnoliaceae; Cell wall; Secondary xylem; Brassinolide (BL); Lignin; Cellulose; Crystallinity; Hemicellulose; Arabinan; Galactan; Pectin
Citation
PHYTOCHEMISTRY, v.101, pp.40 - 51
Indexed
SCIE
SCOPUS
Journal Title
PHYTOCHEMISTRY
Volume
101
Start Page
40
End Page
51
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/98644
DOI
10.1016/j.phytochem.2014.02.003
ISSN
0031-9422
Abstract
The roles of brassinosteroids (BRs) in vasculature development have been implicated based on an analysis of Arabidopsis BR mutants and suspension cells of Zinnia elegans. However, the effects of BRs in vascular development of a woody species have not been demonstrated. In this study, 24-epi brassinolide (BL) was applied to the vascular cambium of a vertical stem of a 2-year-old Liriodendron, and the resulting chemical and anatomical phenotypes were characterized to uncover the roles of BRs in secondary xylem formation of a woody species. The growth in xylary cells was clearly promoted when treated with BL Statistical analysis indicated that the length of both types of xylary cells (fiber and vessel elements) increased significantly after BL application. Histochemical analysis demonstrated that BL-induced growth promotion involved the acceleration of cell division and cell elongation. Histochemical and expression analysis of several lignin biosynthetic genes indicated that most genes in the phenylpropanoid pathway were significantly down-regulated in BL-treated stems compared to that in control stems. Chemical analysis of secondary xylem demonstrated that BL treatment induced significant modification in the cell wall carbohydrates, including biosynthesis of hemicellulose and cellulose. Lignocellulose crystallinity decreased significantly, and the hemicellulose composition changed with significant increases in galactan and arabinan. Thus, BL has regulatory roles in the biosynthesis and modification of secondary cell wall components and cell wall assembly during secondary xylem development in woody plants. (C) 2014 Elsevier Ltd. All rights reserved.
Files in This Item
There are no files associated with this item.
Appears in
Collections
Graduate School > Department of Plant Biotechnology > 1. Journal Articles
College of Life Sciences and Biotechnology > Division of Biotechnology > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Kim, Wook photo

Kim, Wook
식물생명공학과
Read more

Altmetrics

Total Views & Downloads

BROWSE