Plants are eukaryotes—organisms with cells that contain a membrane-bound nucleus. A eukaryote’s DNA is in the nucleus where mRNA is transcribed. The genes in plants and other eukaryotic organisms, such as humans and animals, contain noncoding regions called introns. In the nucleus, introns are removed from mRNA transcripts, and the remaining coding regions (called exons) are spliced back together. Once edited, the mRNA is transported outside the nucleus for translation into proteins by ribosomes.
Credit or Source: Biological and Environmental Research Information System, Oak Ridge National Laboratory
US DOE. Genomics Placemat: Genomics for Energy and Environmental Science, US Department of Energy Office of Science. (p. 1) (website)