Rispail N.,Aberystwyth University |
Rispail N.,CSIC - Institute for Sustainable Agriculture |
Hauck B.,Aberystwyth University |
Bartholomew B.,Summit Wales Ltd |
And 3 more authors.
Symbiosis | Year: 2010
Plant secondary metabolites, particularly flavonoids, are key components in the early stages of nitrogenfixing symbiosis. Despite their importance, the endogenous secondary metabolites involved in symbiosis have not yet been identified in the model legume Lotus japonicus. We therefore determined changes in the secondary metabolic profile of Lotus japonicus roots in response to its symbiont. Analysis of the root secondary metabolite profiles 1 week after inoculation with Mesorhizobium loti revealed quantitative changes in the level of 14 phenolic peaks when compared with non-inoculated control plants. These changes affected compounds from most phenolic classes, possibly resulting from interconversion between classes since the total phenolic level remained constant. In addition, the use of 2 M. loti strains differing only in their capacity to synthesise Nod factor revealed that, although Nod factor signalling induced accumulation of a specific subset of 4 phenolic peaks, most changes were induced in response to both rhizobial strains. © Springer Science+Business Media B.V. 2010.
Summit Wales Ltd | Date: 2013-01-15
Isolated immunomodulatory (e.g. immunostimulatory) polyhydroxlated pyrrolizidine compounds having the formula (I), wherein R is selected from the group comprising hydrogen, straight or branched, unsubstituted or substituted, saturated or unsaturated acyl, alkyl (e.g. cycloalkyl), alkenyl, alkynyl and aryl groups, or a pharmaceutically acceptable salt or derivative thereof, are useful in therapy and prophylaxis, including increasing the Th1:Th2 response ratio, haemorestoration, alleviation of immuno-suppression, cytokine stimulation, treatment of proliferative disorders (e.g. cancer), vaccination, stimulation of the innate immune response and boosting of the activity of endogenous NK cells.