The effect of soil drought on the phloem fiber development in long-fiber flax

被引：42

作者：

Chemikosova, S. B. ^{[1
]}

Pavlencheva, N. V. ^{[1
]}

Gur'yanov, O. P. ^{[1
]}

Gorshkova, T. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Kazan Res Ctr, Kazan Inst Biochem & Biophys, Kazan 420503, Tatarstan, Russia

来源：

RUSSIAN JOURNAL OF PLANT PHYSIOLOGY | 2006年 / 53卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

Linum usitatissimum; phloem fibers; osmotic stress; intrusive growth; cell wall; polysaccharides; galactan;

D O I：

10.1134/S1021443706050098

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effects of soil drought on various stages of phloem fiber development during the period of flax (Linum usitatissimum L.) rapid growth were assessed. The formation of the secondary cell wall was shown to be most retarded. The content of a tissue-specific galactan was reduced especially sharply, and its side chains were changed. Under conditions of pronounced stress-induced plant growth retardation, fiber intrusive growth was suppressed relatively softly: their number on the stem transverse sections was reduced only by 16%. However, this determined irreversible diversity in the fiber length in various stem regions. Such insignificant suppression of intrusive growth under osmotic stress (simultaneously with substantial retardation of plant growth and metabolism inhibition) indicates the functioning of special mechanisms of its regulation.

引用

页码：656 / 662

页数：7

共 16 条

[1] Intrusive growth of flax phloem fibers is of intercalary type [J].