Record Details

Various hexoses and di-hexoses differently influence growth, morphology and pigment synthesis in transformed root cultures of red beet (Beta vulgaris)

IR@CSIR-CFTRI

View Archive Info
 
 
Field Value
 
Relation http://ir.cftri.com/1433/
PCT_01_
 
Title Various hexoses and di-hexoses differently influence growth, morphology and pigment synthesis in transformed root cultures of red beet (Beta vulgaris)
 
Creator Bhagyalakshmi, N.
Thimmaraju, R.
Narayan, M. S.
 
Subject 23 Vegetables
 
Description Red beet hairy root cultures, obtained after genetic transformation with Agrobacterium rhizogenes, are completely heterotrophic and synthesize betalaines (BNs). Upon subjecting the hairy roots to treatments containing different sugars (3% w/v) it was found that sucrose was rapidly utilized, followed by maltose, and a very limited use of glucose, but the other hexoses -fructose, lactose, xylose and galactose or glycerol totally suppressed both growth and BN synthesis. No habituation or adaptability to maltose or glucose occurred, evidenced by the lack of growth upon re-culture in respective medium.
Glycerol, was not taken up alone, but was utilized to a considerable extent in the presence of low levels of sucrose for growth only but not BN synthesis. Red beet hairy root culture did not exogenously hydrolyse sucrose to hexoses, as there were only traces of reducing sugar present in the medium soon after inoculation, without an increase later, confirmed by HPLC. There was an increase in medium osmolarity in the presence of fructose indicating the exudation of certain compounds from the roots. Red beet hairy roots appear useful as a model system to study sugar metabolism/signalling due to
their sensitivity to different sugars that may directly link to morphological changes and BN synthesis.
 
Date 2004
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://ir.cftri.com/1433/1/Plant_Cell%2C_Tissue_%26_Organ_Vol.78__2_.pdf
Bhagyalakshmi, N. and Thimmaraju, R. and Narayan, M. S. (2004) Various hexoses and di-hexoses differently influence growth, morphology and pigment synthesis in transformed root cultures of red beet (Beta vulgaris). Plant Cell Tissue and Organ Culture, 78 (2).