Ca2+ and Mg2+‐Stimulated ATPases from Roots of Plantago lanceolata, Plantago media and Plantago coronopus: Response to Alterations of the Level of Mineral Nutrition and Ecological Significance

摘要: Growth of Plantago lanceolata L., P. media L. and coronopus was followed at two levels mineral nutrition (low-salt high-salt). In addition the response transfer plants from low-salt conditions to high-salt vice versa studied. these species not much affected by nutritional level. showed least dependence on level nutrition. The Ca2+- Mg2+-stimulated ATPase activity microsomal preparations roots also A pH optimum 6.5 observed in all species, together with a relatively high activation Mg2+ lanceolata, Ca2+ media, both ions coronopus. The specific ATPases highest roots. The three occur nutrient-poor habitats, but they are same time particularly adapted circumneutral soils (P. lanceolata), Ca2+-rich media) alternating coronopus). properties (Km, Vmax, protein content) growth discussed relation ecological species.