OsLPR5 Encoding Ferroxidase Positively Regulates the Tolerance to Salt Stress in Rice

Zhao, Juan; Meng, Xin; Zhang, Zhaonian; Wang, Mei; Nie, Fanhao; Liu, Qingpo

doi:10.3390/ijms24098115

Open AccessArticle

OsLPR5 Encoding Ferroxidase Positively Regulates the Tolerance to Salt Stress in Rice

by

Juan Zhao

^1,†

,

Xin Meng

^1,†,

Zhaonian Zhang

¹,

Mei Wang

²,

Fanhao Nie

¹ and

Qingpo Liu

^1,*

¹

The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Advanced Agricultural Sciences, Zhejiang A&F University, Hangzhou 311300, China

²

Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Int. J. Mol. Sci. 2023, 24(9), 8115; https://doi.org/10.3390/ijms24098115

Submission received: 17 March 2023 / Revised: 14 April 2023 / Accepted: 26 April 2023 / Published: 30 April 2023

(This article belongs to the Special Issue Research on Plant Genomics and Breeding)

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Abstract

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.

Keywords: rice; salinity; OsLPR5; ferroxidase; stress

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MDPI and ACS Style

Zhao, J.; Meng, X.; Zhang, Z.; Wang, M.; Nie, F.; Liu, Q. OsLPR5 Encoding Ferroxidase Positively Regulates the Tolerance to Salt Stress in Rice. Int. J. Mol. Sci. 2023, 24, 8115. https://doi.org/10.3390/ijms24098115

AMA Style

Zhao J, Meng X, Zhang Z, Wang M, Nie F, Liu Q. OsLPR5 Encoding Ferroxidase Positively Regulates the Tolerance to Salt Stress in Rice. International Journal of Molecular Sciences. 2023; 24(9):8115. https://doi.org/10.3390/ijms24098115

Chicago/Turabian Style

Zhao, Juan, Xin Meng, Zhaonian Zhang, Mei Wang, Fanhao Nie, and Qingpo Liu. 2023. "OsLPR5 Encoding Ferroxidase Positively Regulates the Tolerance to Salt Stress in Rice" International Journal of Molecular Sciences 24, no. 9: 8115. https://doi.org/10.3390/ijms24098115

APA Style

Zhao, J., Meng, X., Zhang, Z., Wang, M., Nie, F., & Liu, Q. (2023). OsLPR5 Encoding Ferroxidase Positively Regulates the Tolerance to Salt Stress in Rice. International Journal of Molecular Sciences, 24(9), 8115. https://doi.org/10.3390/ijms24098115

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OsLPR5 Encoding Ferroxidase Positively Regulates the Tolerance to Salt Stress in Rice

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