Open AccessInfluence of Chloride- and Soda-Dominated Salinity on Physiological and Biochemical Aspects of Halophytes with Different Strategies of Salt Metabolism
Author(s) -
В. Н. Нестеров,
Е. С. Богданова
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/818/1/012033
Subject(s) - halophyte , salinity , chemistry , photosynthesis , carotenoid , chlorophyll , lipid peroxidation , salt (chemistry) , sodium , metabolism , food science , chlorophyll a , botany , biochemistry , antioxidant , biology , ecology , organic chemistry
The authors study the effect of NaCl and NaHCO 3 at concentrations of 1 M on the physiological and biochemical state of Salicornia perennans and Artemisia santonica for 24 hours. In our experiment, we evaluated: the accumulation of Na in the aerial part of plants, the stress index is lipid peroxidation (LPO); the state of membranes – by the composition and content of lipids and proteins, the level of photosynthetic pigments. The euhalophyte S. perennans accumulated Na on average 30% more than the glycohalophyte A. santonica . The addition of NaCl and NaHCO 3 to the root environment promoted an increase in LPO in S. perennans by 2.4 times as compared to the control. In the case of A. santonica , LPO concentration increased by 1.2 times, but only when NaHCO3 was added to the soil. In addition, NaCl and NaHCO 3 negatively affected plant lipids and proteins. Thus, in S. perennans plants, NaCl contributed to a decrease in phosphlipids by 34%, and NaHCO 3 in glycolipids by 22% in comparison with the control. The quantitative content of the sum of water-soluble and membrane-bound proteins in the studied plants decreased by 10–36%. Chloride and soda-dominated salinity caused a decrease in the proportion of chlorophyll a and carotenoids only in S. perennans . The authors concluded that the response of the photosynthetic system and membrane complexes to various types of salinity in euhalophyte and glycohalophyte was different.