文献类型： 外文期刊

作者： Tan, Wei ¹ ; Li, Qing-Liang ¹ ; Li, Xiao-Mei ² ; Zhao, Qi-Feng ² ;

作者机构： 1.Zao Zhuang Univ, Coll Food Sci & Pharmaceut Engn, Zaozhuang 277160, Peoples R China

2.Shanxi Acad Agr Sci, Pomol Inst, Taiyuan 030031, Shanxi, Peoples R China

关键词： Grapevine; Saline stress; Ca2+; Calcium inhibitors; ROS

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2019 年 21 卷 6 期

页码：

收录情况： SCI

摘要： Soil salinity affects the growth and development of grapevines; however exogenous calcium application can mitigate the growth inhibition effects of salt stress to a certain extent. Therefore, this study was conducted to evaluate the effects of exogenous CaCl2 and inhibitors {LaCl3 , CPZ (chlorpromazine), heparin, and EB (eosin)} on sand-cultured annual self-rooted Tamina grape seedlings in the presence of 200 mmol L-1NaCl. Results showed that salt stress inhibited the shoot length and total biomass of plants by 14.1 and 17.5%, respectively compared with control plants. Salt stress obviously increased the electrolyte leakage of roots and leaves and O-2(-) production rate and H2O2 contents in grapevine leaves while it decreased the activity of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), ascothate peroxidase (APX) and glutathione reductase (GR) after ten days of treatment. In the NaCl + CaCl2 treatment group, not only electrolyte leakage of roots and leaves was decreased but O-2(-) production rate and H2O2 contents in the leaves were also decreased. The activity of antioxidant enzymes was greater in NaCl + CaCl2 treatment group than NaCl treatment group. CaCl2 + inhibitor treatment decreased the activity of POD, APX and GR compared with their activity in CaCl2 treatment under NaCl stress, but CaCl2 + inhibitor treatment increased the H2O2 content in the leaves and the electrolyte leakage of the roots and leaves. Ca2+ showed influx transport in grapevine roots, but the net flow rate was significantly lower than control after one day of 200 mmol L-1 NaCl treatment. The net flow rate in CaCl2 treatment recovered to the level of control, and in CaCl2 + LaCl3 treatment was lower than CaCl2 treatment. In conclusion, exogenous CaCl2 improved the salinity tolerance of grapevines by increasing the activities of antioxidant enzymes, and it also affected Ca2+ transport through both the Ca2+ channel and Ca2+ external flow system. (C) 2019 Friends Science Publishers