Responses of transformed Catharanthus roseus roots to femtomolar concentrations of salicylic acid.
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.
Echevarría-Machado
Ileana
I
Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, A. C., Calle 43 No. 130, Col. Chuburná de Hidalgo, CP 97200, Mérida, Yucatán, Mexico.
Escobedo-G M
Rosa María
RM
Larqué-Saavedra
Alfonso
A
D030008:Catharanthus / Q000187:drug effects / Q000502:physiology*; D004305:Dose-Response Relationship, Drug; D007700:Kinetics; D018519:Meristem / Q000187:drug effects / Q000254:growth & development; D018517:Plant Roots / Q000033:anatomy & histology / Q000187:drug effects / Q000254:growth & development*; D020156:Salicylic Acid / Q000494:pharmacology*
D020156:Salicylic Acid