Growth and Physiological Response of Nitraria tangutorum to Salt Stress

• Published in: Forest research (Beijing) Vol. 28; no. 2
• Main Authors: Ni, Jian-wei, Yang, Xiu-yan, Zhang, Hua-xin, Wu, Hai-wen, Xu, Xiu-yu, Liu, Tao
• Format: Journal Article
• Language: Chinese
• Published: 01.04.2015
• ISSN: 1001-1498

Taking Nitraria tangutorum suspension cells as material and treated by different salt concentrations (0,100,150,200 and 250 mmol times L-1Na Cl), the growth characteristics of cells and the dynamic changes and correlations of physiological indexes with time, including soluble protein, soluble sugar, proline, peroxidase (POD), superoxide dismutase (SOD) and malondialdehyde (MDA), were analyzed. The results are as follows. (1) Salt treatment could significantly affect the growth of suspension cells, the cells growth conform to the Logistic growth curve model and the growth of suspension cells treated by 100 mmol times L-1Na Cl was the fastest, and with the salt concentration increasing the growth were inhibited. (2) Salt treatment could significantly affect the physiological indexes, and at the early stages of culture all the indexes increased with the salt concentration increasing. While this trend decreased gradually with the extending of incubation time and the Proline, SOD, MDA increased in initial stage an