Metabolism of carbohydrates and activity of the antioxidant system in mosses on a post-technogenic salinized territory

Adaptive physiological and biochemical reactions of mosses Didymodon rigidulus Hedw., Barbula unguiculata Hedw. Brachythecium campestre (Müll. Hal.) Schimp. to salt stress have been investigated from the territory tailings storage Stebnyk Mining Chemical Enterprise “Polymineral” (Lviv region, Ukraine). The peculiarities carbohydrate metabolism in under salinity conditions studied. content soluble carbohydrates proline, antioxidant activity, ascorbate reduced glutathione as well activity enzymes their – peroxidase reductase at initial stages (salt shock) prolonged exposure stress) evaluated. It has found that increase α-amylase enhancement hydrolysis starch concentration were studied species mosses. established there was an by 1.2–1.5 times moss shoots conditions, compared with plants background area (vicinity Stebnyk). Experimental studies shown sucrose dominates pool (59.0–79.5% total sugars content). 1.5–2.0 higher B. D. highly saline storage. indicated constitutive adaptive mechanisms are more expressed resistant species, a lower level resistance adapt stressor, mainly due induced protective systems. rigidulus, which abiotic stressors, high both beginning experiment stress. In sensitive stress-induced character accumulation revealed. proline cells depended on characteristics. can be considered part bryophytes’ system, but this osmolyte does not play key role formation mosses’ Obviously, main osmolytes cells. status, while occurred during stress, may indicate its nature. 3–4 levels 1.6–2.5 peroxidase, less tolerant campestre, provided reduction lipid peroxidation process plasma membranes decreased TBA-active products