文献类型： 外文期刊
作者： Zhao, Juan 1 ; Meng, Xin 1 ; Zhang, Zhaonian 1 ; Wang, Mei 2 ; Nie, Fanhao 1 ; Liu, Qingpo 1 ;
作者机构： 1.Zhejiang A&F Univ, Coll Adv Agr Sci, Key Lab Qual Improvement Agr Prod Zhejiang Prov, Hangzhou 311300, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Hort, Hangzhou 310021, Peoples R China
关键词： rice; salinity; OsLPR5; ferroxidase; stress
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN： 1661-6596
年卷期： 2023 年 24 卷 9 期
页码：
收录情况： SCI
摘要： Salinity is a major abiotic stress that harms rice growth and productivity. Low phosphate roots (LPRs) play a central role in Pi deficiency-mediated inhibition of primary root growth and have ferroxidase activity. However, the function of LPRs in salt stress response and tolerance in plants remains largely unknown. Here, we reported that the OsLPR5 was induced by NaCl stress and positively regulates the tolerance to salt stress in rice. Under NaCl stress, overexpression of OsLPR5 led to increased ferroxidase activity, more green leaves, higher levels of chlorophyll and lower MDA contents compared with the WT. In addition, OsLPR5 could promote the accumulation of cell osmotic adjustment substances and promote ROS-scavenging enzyme activities. Conversely, the mutant lpr5 had a lower ferroxidase activity and suffered severe damage under salt stress. Moreover, knock out of OsLPR5 caused excessive Na+ levels and Na+/K+ ratios. Taken together, our results exemplify a new molecular link between ferroxidase and salt stress tolerance in rice.
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