FERMENTATIVE GLYCOLYSIS. “In darkness, seagrasses can even be forced to switch to fermentative metabolism. In P. oceanica, malate has previously been shown to accumulate as a consequence of anoxic conditions. Hence, the positive selection of these three glycolysis genes may be associated with seagrass-specific adaptation to anaerobiosis.”
http://bmcevolbiol.biomedcentral.com/articles/10.1186/1471-2148-11-8