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Chemical Composition, Physiological and Morphological Variations in Salvia Subg. Perovskia Populations in Response to Different Salinity Levels Publisher Pubmed



Ghaffari Z1 ; Rahimmalek M2, 3 ; Sabzalian MR1 ; Arzani A1 ; Kiani R1 ; Gharibi S4 ; Wroblewska K5 ; Szumny A3
Authors
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Authors Affiliations
  1. 1. Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran
  2. 2. Department of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran
  3. 3. Department of Food Chemistry and Biocatalysis, Wroclaw University of Environmental and Life Sciences, Wroclaw, 50-375, Poland
  4. 4. Core Research Facilities (CRF), Isfahan University of Medical Sciences, Isfahan, 81746-73461, Iran
  5. 5. Department of Horticulture, Wroclaw University of Environmental and Life Sciences, pl. Grunwaldzki 24a, Wroclaw, 50-363, Poland

Source: International Journal of Molecular Sciences Published:2024


Abstract

This study evaluated the salinity tolerance of five populations of Salvia subg. Perovskia (S. abrotanoides and S. yadngii). The aims of the study were to assess essential oil components, as well as growth and physiological parameters of two Salvia species in response to salt stress. Four different levels of salinity (0, 60, 90, and 120 mM NaCl) were applied. The effects of various concentrations of NaCl on essential oil content, composition, growth, water relation, proline, lipid peroxidation (MDA), hydrogen peroxide content, and antioxidant enzyme activity, as well as Na and K contents in leaves and the roots were evaluated. The results revealed that root dry weight loss was higher than that of shoots, indicating root vulnerability due to direct exposure to the salt stress. The lowest and highest oil content was obtained in PATKH (0.6%) at 60 mM and PABAD (0.6%) in 90 mM to 2.16% in PABSM population under 120 mM NaCl. Based on GC-MS analysis, 1,8-cineol (11.64 to 22.02%), camphor (2.67 to 27.14%), bornyl acetate (2.12 to 11.07%), borneol (2.38 to 24.37%), β-caryophyllene (3.24 to 7.58%), α-humulene (2.97 to 7.92%), and δ-3-carene (5.31 to 26.65%) were the most abundant compounds. Based on the principal component analysis (PCA), the most salinity-tolerant populations belonged to P. abrotanoides species. These populations are characterized by high root stress tolerance index (STI), root elements, and relative water content (RWC) with elevated levels of salinity stress. Finally, the findings might be useful in unraveling the salinity tolerance mechanisms for integrating stress tolerance with medicinal qualities in future studies. © 2024 by the authors.
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