Effect of NaCl stress on growth and physiological-biochemical characteristics of Stellaria dichotoma
10.7501/j.issn.0253-2670.2014.19.019
- Author:
Li ZHOU
1
Author Information
1. College of Pharmacy, Ningxia Medical University
- Publication Type:Journal Article
- Keywords:
Membrane lipid peroxidation;
NaCl stress;
Physiological-biochemical characteristics;
Protective enzyme;
Stellaria dichotoma L. var. lanceolata Bge
- From:
Chinese Traditional and Herbal Drugs
2014;45(19):2829-2833
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the effect of NaCl stress on growth and physiological-biochemical characteristics of Stellaria dichotoma amdits mechanism. Methods: In this study, one-year-old S. dichotoma was cultivated in pot at four NaCl levels (0.2%, 0.3%, 0.4%, and 0.5%) and the plant growth parameters and physiological-biochemical characteristics were determined. Results: NaCl stress had no significant effect on S. dichotoma growth at 0.3% NaCl. However, NaCl stress significantly inhibited the growth of S. dichotoma at 0.4% NaCl or above, and this inhibition was greater at higher concentration. The activities of SOD, POD, and CAT increased first and then decreased as NaCl concentration increased; The content of MDA and proline significantly increased as NaCl concentration increased, while membrane permeability and soluble protein content significantly decreased as NaCl concentration increased. Conclusion: S. dichotoma has osmotic stress resistance ability and reactive oxygen scavenging capacity at light NaCl stress, which causes S. dichotoma growth no inhibited at a certain extent NaCl stress.
