Biologia Plantarum

, Volume 49, Issue 1, pp 157-159

First online:

Salt tolerance of two aquatic macrophytes, Pistia stratiotes and Salvinia molesta

  • R. K. UpadhyayAffiliated withPlant Biochemistry Laboratory, School of Life Sciences, Assam (Central) University Email author 
  • , S. K. PandaAffiliated withResearch Institute for Bioresources, Okayama University

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The physiological responses to NaCl salinity were investigated in two floating aquatic macrophytes, Pistia stratiotes L. and Salvinia molesta L. With the increasing NaCl concentration a decrease in chlorophyll and carotenoid contents was recorded in Salvinia as compared to Pistia. Also a greater increase in H2O2 accumulation and lipid peroxidation was observed in the shoot and root tissues of Salvinia as compared to Pistia. The superoxide dismutase, glutathione reductase, catalase and guaiacol peroxidase activities, and ascorbate and glutathione contents increased in Salvinia and Pistia shoot and root tissues in response to NaCl.

Additional key words

catalase glutathione reductase NaCl-salinity peroxidase superoxide dismutase thiobarbituric acid reactive substance