Concentrations of Mg++ in plant tissue are variable but always rather high. Since 70% or more is freely diffusible (Mengel and Kirkby 1978), Mg++ must have the highest chemical activity of any divalent cation in the cytoplasm. Depending on the relative abundance of K+, it will also contribute to neutralization of sugar phosphate, sugar nucleotides, and organic and amino acids. The first important property of Mg++ is the relatively high solubility of its salts. Mg++ has a structural role in chlorophyll, is required for ribosomal integrity, and undoubtedly contributes to the structural stability of nucleic acids and membranes. There is evidence that fluxes of Mg++ can serve to regulate enzyme activity, as occurs with the light-activated increase in CO2 fixation by chloroplasts (Walker 1974). The mobility of Mg++ is a distinguishable property (Clarkson and Hanson 1980).
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Acai, Maqui And Many Other Popular Berries That Will Change Your Life And Health. Berries have been demonstrated to be some of the healthiest foods on the planet. Each month or so it seems fresh research is being brought out and new berries are being exposed and analyzed for their health giving attributes.