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Brackish water irrigation boosts honeysuckle (Lonicera japonica Thunb.)-salt tolerance by regulating sodium partitioning and potassium homeostasis: implications for coastal saline soil

文献类型：期刊论文

作者Shi, Yu4; Wang, Xiaojie1,2,3; Zhang, Kaipeng4; Liu, Xuepeng4; Xia, Jiangbao4; Zhang, Dongjie4; Zhang, Xiaoshuai1,2,3; Cao, Qiqi4; He, Wenjun4
刊名FRONTIERS IN PLANT SCIENCE
出版日期2025-12-01
卷号16页码:17
关键词honeysuckle brackish water irrigation Yellow River Delta coastal saline-alkali land ionic balance sodium partitioning Potassium homeostasis
ISSN号1664-462X
DOI10.3389/fpls.2025.1655009
通讯作者He, Wenjun(hwjun127@163.com)
英文摘要Introduction Agricultural development in coastal saline-alkali lands is constrained by freshwater scarcity. Utilizing brackish water for irrigation presents a viable pathway to alleviate this pressure. Honeysuckle (Lonicera japonica Thunb.), a salt-tolerant medicinal plant, holds promise for the ecological restoration of these areas. However, the regulatory mechanisms by which brackish water irrigation affects ionic homeostasis and physiological traits in honeysuckle remain elusive.Methods A field experiment was conducted in the coastal saline-alkali soils of the Yellow River Delta. A randomized complete block design was employed with four brackish water irrigation regimes: T1 (rainfed control), T2 (40 mm), T3 (80 mm), and T4 (120 mm). The effects of these irrigation treatments on ion dynamics within the soil-plant system and the salt tolerance of honeysuckle were analyzed.Results With increasing brackish water irrigation, (1) significantly reduced cation accumulation in the topsoil. Compared to T1, the soil Na+ content under T2, T3, and T4 decreased by 33.69%, 33.94%, and 56.53% in 2019, and by 29.53%, 41.46%, and 59.31% in 2020, respectively. Similarly, the soil K+ content decreased by 3.20%, 27.48%, and 38.78% in 2019, and by 33.58%, 46.77%, and 52.80% in 2020 under the same treatments. (2) In honeysuckle, selective sodium partitioning and potassium homeostasis enhanced the leaf K+/Na+ ratio. The ratio in T4 was 165.45%, 89.90%, and 48.89% higher than in T1, T2, and T3, respectively-a response driven by a 59.27% reduction in leaf Na+ and a 7.24% increase in leaf K+ in T4. (3) alleviated salt-induced oxidative stress in the leaves, reducing the malondialdehyde (MDA) content from 228.46 nmol center dot g-1 (T1) to 143.81 nmol center dot g-1 (T4) and decreasing hydrogen peroxide (H2O2) by 43.42%. Concurrently, the whole-plant biomass under T4 (829.56 g) exhibited an 8.8-fold increase versus T1 (94.05 g), while the total Na+ accumulation per plant increased from 351.66 mg (T1) to 1391.97 mg (T4).Discussion The findings demonstrate that brackish water irrigation mitigates Na+ accumulation in the root zone through leaching. Honeysuckle maintains ionic homeostasis by restricting Na+ uptake at the root level, facilitating selective Na+ translocation in stems, and regulating the K+/Na+ ratio in leaves. This coordinated physiological strategy ultimately enhances biomass.
WOS关键词SALT ; STRESS ; PLANTS ; NA+ ; ACCUMULATION ; GROWTH ; TISSUE ; ROOTS ; MAIZE ; YIELD
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:001638228600001
资助机构Shandong Provincial Natural Science Foundation ; Youth Innovation Support Program of Shandong Universities ; Start-up Funds for Doctoral Research in Shandong Institute of Aeronautics ; College Student Innovation Training Program Plan ; Yellow River Delta Ecological Research Station of Coastal Wetland ; Chinese Academy of Sciences
源URL[http://ir.yic.ac.cn/handle/133337/41967]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
通讯作者He, Wenjun
作者单位1.Chinese Acad Sci, Res Stn Coastal Wetland Ecosyst, Dongying, Peoples R China
2.Chinese Acad Sci, Yellow River Delta Field Observat, Dongying, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China
4.Shandong Univ Aeronaut, Shandong Key Lab Eco Environm Sci Yellow River Del, Binzhou, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Yu,Wang, Xiaojie,Zhang, Kaipeng,et al. Brackish water irrigation boosts honeysuckle (Lonicera japonica Thunb.)-salt tolerance by regulating sodium partitioning and potassium homeostasis: implications for coastal saline soil[J]. FRONTIERS IN PLANT SCIENCE,2025,16:17.
APA Shi, Yu.,Wang, Xiaojie.,Zhang, Kaipeng.,Liu, Xuepeng.,Xia, Jiangbao.,...&He, Wenjun.(2025).Brackish water irrigation boosts honeysuckle (Lonicera japonica Thunb.)-salt tolerance by regulating sodium partitioning and potassium homeostasis: implications for coastal saline soil.FRONTIERS IN PLANT SCIENCE,16,17.
MLA Shi, Yu,et al."Brackish water irrigation boosts honeysuckle (Lonicera japonica Thunb.)-salt tolerance by regulating sodium partitioning and potassium homeostasis: implications for coastal saline soil".FRONTIERS IN PLANT SCIENCE 16(2025):17.

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来源：烟台海岸带研究所

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