Another PM protein that when overexpressed in Arabidopsis and Cochlearia hollandica confers salt tolerance is the PM [Na.sup.+]/[H.sup.+] antiporter, which its activity and expression increase under salinity in salt tolerant plants (Mansour, 2014; Nawaz et al., 2014).
Plantas nativas propias de estos habitats como Glaux maritima, Matricaria maritima y Cochlearia aestuaria han visto reducidas sus poblaciones en los ultimos anos ante el avance de este arbusto (Uribe-Echebarria & Campos, 2006).
Individuals of all the species established as seedlings in 1993 survived the winter 1993-1994, and Cochlearia officinalis and Saxifraga cernua appeared for the first time in 1994.
Ledges on the south cliffs also support a dense vegetation, comprising mainly common scurvygrass (Cochlearia officinalis) and Arctic mouse-ear (Cerastium arcticum).