(600-46) Transcriptomic analysis reveals a concomitant increase in transcripts related to photosynthesis and C, N and S assimilation induced by kappa oligocarrageenan in Arabidopsis
Researche professor Universidad Autónoma de Chile Talca, Maule, Chile
Body of Abstract: Plants can perceive various molecules that generate biological effects related to growth and development and the defense response. These molecules are known as elicitors and can be from the same plant, an endogenous elicitor, or any other organism being an exogenous elicitor. One of these elicitor molecules that come from sugar are oligosaccharins. In this case, we analyze the effects of an oligosaccharin, OC kappa, an oligosaccharide of carrageenan derived from red algae that can induce increased growth and development in terrestrial plants. This effect was tested in Arabidopsis thaliana treated with OC kappa by analyzing changes in its phenotype and changes at the level of the transcriptome induced by this molecule. The results showed that Arabidopsis can perceive OC kappa and is able to increase biomass, rosette diameter, and root length. On the other hand, the transcriptomic analysis reveals that many transcripts of the primary metabolic pathway are overexpressed under the OC kappa treatment, which would indicate that the increase in growth should be, in part, due to an increase in the transcripts that control photosynthesis and the assimilation of Carbon, Nitrogen and Sulfur.