Durik-durik (Syzygium sp.) is one of the plants that have been adapted to wetland ecosystem in Kajuik Lake, Langgam District, Pelalawan Regency, Riau Province. The ability of this plant adaptation can’t be separated from the existence of genes related to the stagnant puddle adaptation. To know the genes involved in the stress, a gene expression analysis can be performed. As a first step, …