Desiccation-related responses of antioxidative enzymes and photosynthetic pigments in Brachythecium procumbens (Mitt.) A. Jaeger

摘要: Desiccation, a major environmental stress, affects water potential and turgor in the plants leading to physiological imbalance. Though bryophytes have ability endure desiccation, adverse conditions may cause them dry irreversibly. In present study, desiccation tolerance mechanism of Brachythecium procumbens (Mitt.) A. Jaeger was analysed terms its antioxidative response photosynthetic pigments. Plants B. were subjected stress for varying durations (24–96 h) along with control (0 h) at room temperature. Monitoring done using antioxidant enzyme activities, pigments, chlorophyll stability index, as well as, relative content. The enzymes—superoxide dismutase peroxidase—showed higher activity desiccated compared increased significantly duration desiccation. However, catalase decreased during amount up 48 h treatment control, whereas rehydrated samples, relatively lower value obtained. Majority withstand certain level least few days, but some are much more tolerant than that. bryophyte system studied showed basic difference activities under different periods Hence, drought-tolerant genera need be identified propagated so that pioneer colonizers ecosystem naturally conserved.