Responses of transformed Catharanthus roseus roots to ferntomolar concentrations of salicylic acid

被引：25

作者：

Echevarria-Machado, Ileana

Escobedo-GM, Rosa Maria

Larque-Saavedra, Alfonso

机构：

[1] Ctr Invest Cient Yucatan, AC, Unidad Recursos Nat, Merida 97200, Yucatan, Mexico

[2] Ctr Invest Cient Yucatan, Unidad Bioquim & Biol Mol Plantas, Merida 97200, Yucatan, Mexico

来源：

PLANT PHYSIOLOGY AND BIOCHEMISTRY | 2007年 / 45卷 / 6-7期

关键词：

bioassay; Catharanthus roseus transformed roots; femtomolar concentrations; root growth; salicylic acid;

D O I：

10.1016/j.plaphy.2007.04.003

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Catharanthus roseus transformed roots were cultured in the presence of salicylic acid (SA) at concentrations between 0.1 fM and 100 pM and the effect on root growth was evaluated. Significant morphological changes in the lateral roots were recorded on day two in the SA treatment. Presence of SA increased root cap size and caused the appearance of lateral roots closer to the root tip. The bioassay was sensitive enough to allow testing of low concentrations of other growth regulators that may affect root morphology and physiology. (C) 2007 Elsevier Masson SAS. All rights reserved.

引用

页码：501 / 507

页数：7

共 32 条

[1] Role of cytokinin and auxin in shaping root architecture: Regulating vascular differentiation, lateral root initiation, root apical dominance and root gravitropism [J].