文献类型： 外文期刊

作者： Liu Min-min ¹ ; Li Ya-lun ¹ ; Li Guang-cun ² ; Dong Tian-tian ¹ ; Liu Shi-yang ¹ ; Liu Pei ¹ ; Wang Qing-guo ¹ ;

作者机构： 1.Shandong Agr Univ, Coll Food Sci & Engn, Key Lab Food Proc Technol & Qual Control Shandong, Tai An 271018, Shandong, Peoples R China

2.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Minist Agr & Rural Affairs, Key Lab Biol & Genet Improvement Tuber & Root Cro, Beijing 100081, Peoples R China

关键词： potato; salt stress; cystatin; StCYS1; overexpression

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2020 年 19 卷 9 期

页码：

收录情况： SCI

摘要： Salt stress seriously restricts the growth and yield of potatoes. Plant cystatins are vital players in biotic stress and development, however, their roles in salt stress resistance remain elusive. Here, we report that StCYS1 positively regulates salt tolerance in potato plants. An in vitro biochemical test demonstrated that StCYS1 is a bona fide cystatin. Overexpression of StCYS1 in both Escherichia coli and potato plants significantly increased their resistance to high salinity. Further analysis revealed that the transgenic plants accumulated more proline and chlorophyll under salt stress conditions. Moreover, the transgenic plants displayed higher H2O2 scavenging capability and cell membrane integrity compared with wild-type potato. These results demonstrate that StCYS1 is closely correlated with salt stress and its overaccumulation can substantially enhance salt stress resistance.