Relationship between development of compression wood and gene expression
Relationship between development of compression wood and gene expression
复制标题
DOI：
10.1016/j.plantsci.2009.02.017
复制
发表时间：
2009-06-01
期刊：
影响因子：
5.2
通讯作者：
Yamamoto, Hiroyuki
中科院分区：
文献类型：
--
作者：
Yamashita, Saori;Yoshida, Masato;Yamamoto, Hiroyuki
在裸子植物中，与正常木材不同的组织在倾斜的茎或树枝的下侧发育，被称为压缩木。压缩木材的特点是管胞壁较厚、木质素含量较高、管胞长度较短等。普通木材和压缩木材之间不存在明确的界限，压缩木材从轻度到重度连续分类。因此，轻度和重度压缩木材之间的转录物种类和丰度预计会有很大差异。我们准备了以不同倾斜角度（0-50 度）生长的扁柏树苗，以获得正常、轻度和重度压缩的木材样品。我们检查了压缩木的发育程度与先前筛选的基因的相对转录丰度之间的关系。与漆酶高度相似的转录物的木质素含量和相对丰度随着幼树倾斜角度的增加而增加，即压缩木的发育。相反，管胞长度随着压缩木发育的增加而减少，并且在管胞长度短的样品中，与抗坏血酸氧化酶高度相似的转录物的相对丰度减少。 (C) 2009 Elsevier Ireland Ltd. 保留所有权利。
In gymnosperms, tissue that differs from normal wood develops on the lower side of an inclined stem or branch and is referred to as compression wood. Compression wood is characterized by thicker tracheid walls, higher lignin content, and shorter tracheid length, among other features. No definable boundary exists between normal wood and compression wood, and compression wood is classified continuously from mild to severe. Therefore, kinds and abundances of transcripts are expected to be considerably different between mild and severe compression wood. We prepared Chamaecyparis obtusa saplings grown at various angles of inclination (0-50 degrees) to obtain normal, mild, and severe compression wood samples. We examined the relationship between the degree of development of compression wood and relative transcript abundance of previously screened genes. Lignin content and relative abundance of a transcript with high similarity to laccase increased with increasing inclination angle of the saplings, i.e. development of compression wood. In contrast, tracheid length decreased with increasing development of compression wood, and in samples where the tracheid length was short, relative abundance of a transcript with high similarity to ascorbate oxidase decreased. (C) 2009 Elsevier Ireland Ltd. All rights reserved.