Abstract
Plants are sessile organisms that are exposed to environmental changes and therefore require highly regulated pathways and mechanisms that allow them to adapt to such changes. Sugars have a central role in coordinating metabolic fluxes in response to the changing environment and in providing cells and tissues with the necessary energy for continued growth and survival. Internal sugar sensory mechanisms are mostly related to metabolite control and regulation. These mechanisms have been broadly studied, while until recently, the role of sugars towards extracellular sugar sensing mechanisms has remained a mystery. Therefore, work remains to be done in order to gather comprehensive knowledge and information about these extracellular signaling events.
A recently discovered gene, At1g74360, encodes an LRR-RLK that has shown properties that relate it to extracellular sugar detection and connecting sugar availability to growth. In this study, the previously mentioned Sugar Responsive RLK 1 (SRR1) has been shown to respond towards sucrose and different hormones treatment.
