外源甜菜碱对NaCl胁迫下大红三角梅生理特性的影响

doi:10.14088/j.cnki.issn0439-8114.2025.03.014

湖北农业科学 ›› 2025, Vol. 64 ›› Issue (3): 86-91.doi: 10.14088/j.cnki.issn0439-8114.2025.03.014

外源甜菜碱对NaCl胁迫下大红三角梅生理特性的影响

胡若群¹, 杨卓生², 王舟帆², 郑庆华³, 游永彬³, 解叶龙⁴, 兰坤霖⁵, 陈莹¹

1.福建农林大学风景园林与艺术学院,福州 350100;
2.中闽铭泰集团有限公司,福建厦门 361006;
3.鑫泰建设集团有限公司,福建厦门 361001;
4.福建中闽城投建筑工程有限公司,福建南平 350799;
5.福建农林大学金山学院,福州 350002

收稿日期:2024-10-30 发布日期:2025-04-17
通讯作者: 陈莹(1981-),女,副教授,博士,主要从事园林生态和植物资源开发与利用研究,(电话)13110512833(电子信箱)000q020057@fafu.edu.cn。
作者简介:胡若群(1997-),女,广东汕头人,在读硕士研究生,研究方向为园林生态和植物资源开发与利用,(电话)13169089371(电子信箱)357031900@qq.com。
基金资助:
福建省住房和城乡建设厅科技研究开发计划项目(2022-K-198)

The influence of exogenous glycine betaine on the physiological characteristics of Bougainvillea spectabilis ‘Crimsonlake’ under NaCl stress

HU Ruo-qun¹, YANG Zhuo-sheng², WANG Zhou-fan², ZHENG Qing-hua³, YOU Yong-bin³, XIE Ye-long⁴, LAN Kun-lin⁵, CHEN Ying¹

1. College of Landscape Architecture and Art, Fujian Agriculture and Forestry University, Fuzhou 350100, China;
2. Zhongmin Mingtai Group Co., Ltd., Xiamen 361006, Fujian, China;
3. Xintai Construction Group Co., Ltd., Xiamen 361001, Fujian, China;
4. Fujian Zhongmin City Investment Construction Engineering Co., Ltd., Nanping 350799, Fujian, China;
5. Jinshan College of Fujian Agriculture and Forestry University, Fuzhou 350002, China

Received:2024-10-30 Online:2025-04-17

摘要/Abstract

摘要： 为了探究外源甜菜碱对NaCl胁迫下三角梅生理特性的影响以及其最佳缓解浓度,以二年生大红三角梅(Bougainvillea spectabilis ‘Crimsonlake’)盆栽苗为试验材料,用200 mmol/L NaCl模拟盐胁迫后,分别施加50、100、150 mmol/L的外源甜菜碱(T1、T2、T3),以NaCl胁迫后清水养护(CK)作为对照,测定不同处理对三角梅叶片相对电导率、丙二醛、脯氨酸以及SOD、POD、CAT活性的影响,并对不同浓度甜菜碱缓解NaCl胁迫的能力进行综合评价。结果表明,NaCl胁迫后施加外源甜菜碱,叶片相对电导率、丙二醛含量显著降低,脯氨酸含量以及POD、SOD、CAT活性明显提高,表明外源甜菜碱能够有效缓解NaCl胁迫对三角梅的伤害。通过主成分分析与隶属函数分析得出,施加100 mmol/L外源甜菜碱对NaCl胁迫后大红三角梅缓解作用最佳。

关键词: 大红三角梅(Bougainvillea spectabilis ‘Crimsonlake’), NaCl胁迫, 甜菜碱, 渗透调节, 抗氧化酶活性

Abstract: To investigate the impact of exogenous betaine on the physiological characteristics of Bougainvillea spectabilis under NaCl stress and to determine its optimal alleviating concentration, two-year-old potted Bougainvillea spectabilis ‘Crimsonlake’ were used as experimental materials, after simulating salt stress with a 200 mmol/L NaCl solution, exogenous glycine betaine was applied at concentrations of 50, 100, and 150 mmol/L(T1, T2, T3), with water maintenance after NaCl stress (CK) serving as the control group. The effects of different treatments on leaf relative conductivity, malondialdehyde (MDA), proline, and the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were determined, and the alleviating capacity of betaine at different concentrations against NaCl stress was comprehensively evaluated. The results showed that the application of exogenous glycine betaine after NaCl stress significantly reduced leaf relative conductivity and MDA content, while obviously increasing proline and the activities of POD, SOD, and CAT, indicating that exogenous glycine betaine could effectively alleviate the damage of NaCl stress to Bougainvillea spectabilis ‘Crimsonlake’. Principal component analysis and fuzzy function analysis revealed that the application of 100 mmol/L exogenous glycine betaine was the most effective in alleviating the stress of NaCl on Bougainvillea spectabilis ‘Crimsonlake’.

Key words: Bougainvillea spectabilis ‘Crimsonlake’, NaCl stress, glycine betaine, osmotic adjustment, antioxidant enzyme activity

中图分类号:

胡若群, 杨卓生, 王舟帆, 郑庆华, 游永彬, 解叶龙, 兰坤霖, 陈莹. 外源甜菜碱对NaCl胁迫下大红三角梅生理特性的影响[J]. 湖北农业科学, 2025, 64(3): 86-91.

HU Ruo-qun, YANG Zhuo-sheng, WANG Zhou-fan, ZHENG Qing-hua, YOU Yong-bin, XIE Ye-long, LAN Kun-lin, CHEN Ying. The influence of exogenous glycine betaine on the physiological characteristics of Bougainvillea spectabilis ‘Crimsonlake’ under NaCl stress[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(3): 86-91.

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外源甜菜碱对NaCl胁迫下大红三角梅生理特性的影响

The influence of exogenous glycine betaine on the physiological characteristics of Bougainvillea spectabilis ‘Crimsonlake’ under NaCl stress

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