MOLECULAR ADAPTATION. “These adaptations are possibly associated to the above mentioned Na+ toxicity which seagrasses have likely experienced during their evolution towards the marine environment. To this respect, molecular adaptation of key cellular processes known to be sensitive towards increased ionic levels such as photosynthesis, translation, and selected metabolic enzymes are expected.”
http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8