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生态学杂志 ›› 2025, Vol. 44 ›› Issue (11): 3636-3645.doi: 10.13292/j.1000-4890.202511.037

• 研究报告 • 上一篇    下一篇

叶面喷施胺鲜酯对镉胁迫下苗期绿豆生长的正向调控作用

孙嘉琦1,2,张晨1,2,董艳蕾1,2,方淑梅2,3,王庆燕1,2,姜海鹏1,2,梁喜龙1,2*   

  1. 1黑龙江八一农垦大学农学院, 黑龙江大庆 163319; 2黑龙江省植物生长调节剂工程技术研究中心, 黑龙江大庆 163319; 3黑龙江八一农垦大学生命科学技术学院, 黑龙江大庆 163319)
  • 出版日期:2025-11-10 发布日期:2025-11-10

Positive effect of foliar spraying diethyl aminoethyl hexanoate on the growth of mung bean seedlings under cadmium stress.

SUN Jiaqi1,2, ZHANG Chen1,2, DONG Yanlei1,2, FANG Shumei2,3, WANG Qingyan1,2, JIANG Haipeng1,2, LIANG Xilong1,2*   

  1. (1College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China; 2Plant Growth Regulators Engineering Technology Research Centre of Heilongjiang, Daqing 163319, Heilongjiang, China; 3 College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China).

  • Online:2025-11-10 Published:2025-11-10

摘要: 镉作为生态毒性最强的重金属污染物之一,严重抑制作物生长发育。本研究以“绿丰2号”和“绿丰5号”绿豆品种为试验材料,通过盆栽结合叶面喷施方式,研究了叶面喷施胺鲜酯(DA-6)对100 μmol·L-1镉胁迫下苗期绿豆形态建成、光合色素含量、渗透调节物质及抗氧化防御系统的动态调控作用。结果表明:叶面喷施DA-6可有效提高两品种光合色素含量,增加可溶性糖含量,提升抗氧化酶活性,“绿丰2号”的POD和CAT活性最高分别提升35%和197%,“绿丰5号”的POD和CAT活性最高分别提升204%和378%,但两品种的SOD活性主要表现为下降趋势;叶面喷施DA6改善谷胱甘肽代谢(P<0.05),其中“绿丰2号”GSH含量增加30%、GSSG显著降低78%、GSH/GSSG扩大458%,“绿丰5号”GSH含量提升53%、GSSG显著降低84%、GSH/GSSG升高617%。DA-6可通过协同作用,激活POD-CAT抗氧化系统、重建谷胱甘肽氧化还原平衡系统,提升光合色素含量,显著缓解镉胁迫对苗期绿豆生长的抑制效应,具体表现为“绿丰2号”和“绿丰5号”的茎粗最高分别增加59%与51%,总干物质量最高分别增加107%和78%。这些结果为利用外源植物生长调节剂缓解作物镉胁迫提供重要的理论依据和技术支撑。


关键词: 绿豆, 镉胁迫, 植物生长调节剂, 胺鲜酯, 调控作用

Abstract: Cadmium (Cd), one of the most ecotoxic heavy metals, severely inhibits growth and development of crops. We investigated the effects of foliar spraying diethyl aminoethyl hexanoate (DA-6) on morphogenesis, photosynthetic pigment content, osmotic regulatory substances, and antioxidant defense systems in two cultivars of mung bean (Lyufeng 2 and Lyufeng 5) at the seedling stage under 100 μmol·L-1 Cd stress in a pot experiment. The results showed that foliar spraying DA-6 increased total chlorophyll content, soluble sugar content, and antioxidant enzyme activities. The POD and CAT activities in Lyufeng 2 were increased by 35% and 197% respectively, while those in Lyufeng 5 were increased by 204% and 378% respectively. However, SOD activity in both cultivars declined under Cd stress. Foliar spraying of DA6 improved glutathione metabolism (P<0.05). In particular, the GSH content of Lyufeng 2 was increased by 30%, GSSG was significantly decreased by 78%, and the GSH/GSSG ratio was increased by 458%. For Lyufeng 5, the GSH content was increased by 53%, GSSG was significantly decreased by 84%, and the GSH/GSSG ratio was increased by 617%. DA-6 could effectively alleviate Cdinduced growth inhibition in mung bean seedlings through synergistic activation of the POD-CAT antioxidant system, reconstruction of glutathione redox homeostasis, and increase of photosynthetic pigment content. Notably, Lyufeng 2 and Lyufeng 5 showed maximum increases of 59% and 51% in stem diameter and 107% and 78% in total dry biomass, respectively. Our results provide theoretical basis and technical support for the application of exogenous plant growth regulators to alleviate Cd stress in crops.


Key words: mung bean, cadmium stress, plant growth regulator, diethyl aminoethyl hexanoate (DA-6), regulatory role