Glycosylation-mediated phenylpropanoid partitioning in Populus tremuloides cell cultures.

ABSTRACT:

Background

Phenylpropanoid-derived phenolic glycosides (PGs) and condensed tannins (CTs) comprise large, multi-purpose non-structural carbon sinks in Populus. A negative correlation between PG and CT concentrations has been observed in several studies. However, the molecular mechanism underlying the relationship is not known.

Results

Populus cell cultures produce CTs but not PGs under normal conditions. Feeding salicyl alcohol resulted in accumulation of salicins, the simplest PG, in the cells, but not higher-order PGs. Salicin accrual reflected the stimulation of a glycosylation response which altered a number of metabolic activities. We utilized this suspension cell feeding system as a model for analyzing the possible role of glycosylation in regulating the metabolic compe

SUBMITTER: Payyavula RS 

PROVIDER: S-EPMC2808312 | biostudies-literature | 2009 Dec

REPOSITORIES: biostudies-literature