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- W2271210155 abstract "Present study was carried out to evaluate antioxidant, photosynthetic and productivity of moss Racomitrium crispulum (Hook. f. et Wils.) Hook. f. et Wils. under various phytotoxic concentration of metals Cu and Cd for different days. Exogenous supplied Cu and Cd to R. crispulum significantly give stress on oxidative enzymes as well as on photosynthesis. After 15 days of treatment, the maximum decrease in NRA were 27% and 47% at 0.2 M concentration both in Cu and Cd treated moss is concomitant with the decrease in percent nitrogen and protein of the respective samples. A significant degradation of chlorophyll was 28% at 0.1 M Cd after 15 days. Increase in carotenoid content was noticed at low concentration of metals (0.01 M) attributed to photoprotective role of them. Carbohydrate content decreases 54% and 57% of Cu and Cd treated moss after 15 days showed their deleterious effect only after prolong period of incubation. Total sugar content is in inverse of carbohydrate to compensate the moss physiology. Peroxidase activity increased with the increase in treatment concentration, while it decreases with respect to increase in exposure time. The maximum peroxidase activity was observed is 11% at 10 mM treatment in 6 days Cu treated sample. The increase in SOD activity was observed under higher concentration and also concomitant with respect to increase in incubation period under both metal (Cu and Cd). Our findings and those of other cited herein suggested that under mild to moderate metal (Cu and Cd) stress for prolong period give inductive effect and also on photosynthates of moss R. crispulum. This further suggests that under every possible alteration, cell maintains their integrity and homeostasis by shuffling their metabolic and physiological responses. Present finding recommends that R. crispulum of Kumaon hills (India) is tolerant to Cu and Cd metal pollution and can be use as bioaccumulators for these two metals." @default.
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- W2271210155 date "2009-12-01" @default.
- W2271210155 modified "2023-09-26" @default.
- W2271210155 title "Effect of Cu and Cd on Oxidative Enzymes and Chlorophyll Content of Moss Racomitrium crispulum" @default.
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- W2271210155 doi "https://doi.org/10.6165/tai.2009.54(4).365" @default.
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