RcLOG7-1 of castor bean plays dual roles in enhancing drought and salt stress tolerance.

Yanxiao Li, Yang Shen, Wanhong Li, Yue Wang, Weifeng Dong, Mingzhe Sun, Dianjun Xiang, Xiaoli Sun, Peng Liu

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Article in Plant cell reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Authors and funding

9 authors.

Yanxiao LiCrop Stress Molecular Biology Laboratory, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.ORCID http://orcid.org/0000-0001-9528-7179

Yang ShenCrop Stress Molecular Biology Laboratory, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.

Wanhong LiCrop Stress Molecular Biology Laboratory, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.

Yue WangCrop Stress Molecular Biology Laboratory, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.

Weifeng DongCrop Stress Molecular Biology Laboratory, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.

Mingzhe SunCrop Stress Molecular Biology Laboratory, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, China.

Dianjun XiangCollege of Agriculture, Inner Mongolia Minzu University, Tongliao, 028000, China. 2338245452@qq.com.

Xiaoli SunCrop Stress Molecular Biology Laboratory, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, 163319, China. sunxiaoli2016@byau.edu.cn.

Peng LiuCollege of Agriculture, Inner Mongolia Minzu University, Tongliao, 028000, China. liupeng@imun.edu.cn.

Funding

National Natural Science Foundation of China 31860389Natural Science Foundation Project of the Inner Mongolia Autonomous Region 2023MS03032the Inner Mongolia Autonomous Region Engineering Research Center open project MDK2023081the Key Research and Development Plan of Heilongjiang Province GZ20220070

6 · The paper itself

Abstract

key messageHeterologous overexpression, transcriptomics, and physiology confirm RcLOG7-1 enhances plant drought and salt tolerance. The specific phosphohydrolase LONELY GUY (LOG) is involved in various biological processes of plant growth and development. However, research on the regulatory role of castor bean LOG under drought and salt stresses is limited. Here, we report the dual positive regulatory effects of the RcLOG7-1 gene under both drought and salt stresses in genetically modified Arabidopsis thaliana. Drought and salinity conditions significantly induced the transcription of RcLOG7-1. Subcellular localization results indicate that RcLOG7-1 was located in the cytoplasm. Overexpression of RcLOG7-1 in Arabidopsis enhanced drought and salt stresses tolerance. Through RNA-seq and physiological assessments, RcLOG7-1 modulated the expression of genes involved in glutathione metabolism, phenylpropanoid biosynthesis, and proline synthesis under drought and salt stresses, thereby enhancing antioxidant enzyme activity and lignin content in transgenic Arabidopsis. This resulted in improved scavenging of active oxygen free radicals. Furthermore, RcLOG7-1 influenced plant hormone signal transduction, particularly cytokinin synthesis (CTK), leading to elevated CTK levels in transgenic Arabidopsis compared to wild type. In summary, this study provides data supporting the function of LOG genes in stressed conditions, facilitating and accelerating molecular breeding for stress tolerance in castor bean.

Indexed as

Plant ProteinsRicinus communisSalt ToleranceArabidopsisDroughtsGene Expression Regulation, PlantPlant Growth RegulatorsPlants, Genetically ModifiedSalt StressStress, PhysiologicalPlant Growth RegulatorsPlant ProteinsCastor beanDrought toleranceRcLOG7-1Reactive oxygenSalt tolerance

Identifiers

PMID41400873

DOI10.1007/s00299-025-03670-z

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