浙江农业科学 ›› 2026, Vol. 67 ›› Issue (10): 2448-2455.DOI: 10.16178/j.issn.0528-9017.20250595

• 果树与蔬菜 • 上一篇    下一篇

二氢卟吩铁提高辣椒盐胁迫耐受性研究

朱雪婷1,2(), 乐秀虎1(), 魏利辉2, 周冬梅2()   

  1. 1.河北工程大学 园林与生态工程学院,河北 邯郸 056038
    2.江苏省农业科学院 植物保护研究所,江苏 南京 210014
  • 收稿日期:2025-08-19 出版日期:2026-10-11 发布日期:2026-10-19
  • 通讯作者: 乐秀虎,周冬梅
  • 作者简介:周冬梅,E-mail:dongmeizhou@jaas.ac.cn。
    乐秀虎,E-mail:lexiuhu@163.com
    朱雪婷,主要从事资源利用与植物保护研究。E-mail:2495560317@qq.com。
  • 基金资助:
    江苏省农业科技自主创新基金项目(CX〔23〕1033);邯郸市科学技术研究与发展计划项目(21422012329)

Study on the improvement of salt tolerance in Capsicum annuum L. by iron chlorine e6

ZHU Xueting1,2(), LE Xiuhu1(), WEI Lihui2, ZHOU Dongmei2()   

  1. 1.School of Landscape and Ecological Engineering,Hebei University of Engineering,Handan 056038,Hebei
    2.Institute of Plant Protection,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,Jiangsu
  • Received:2025-08-19 Online:2026-10-11 Published:2026-10-19
  • Contact: LE Xiuhu,ZHOU Dongmei

摘要:

盐胁迫是限制辣椒(Capsicum annuum L.)生产的主要非生物胁迫之一。本研究阐明了一种新型植物生长调节剂二氢卟吩铁(iron chlorine e6,ICE6)在增强辣椒耐盐性中的调控作用及生理机制。设置200 mmol·L-1 NaCl胁迫试验,系统分析了外源喷施ICE6对种子萌发、幼苗生长等关键生理生化指标及对耐盐基因表达的影响。结果表明,与NaCl处理相比,ICE6+NaCl处理的种子发芽率显著(p<0.05)增加31.66百分点,发芽指数显著提高76.79%,同时使相对盐害率显著降低,有效缓解盐胁迫对辣椒种子萌发的抑制。在幼苗期,ICE6处理显著缓解了盐胁迫症状。与NaCl处理相比,ICE6+NaCl处理的12、24、36、48、60 h相对电导率分别显著降低18.61、25.07、26.72、12.02和7.73百分点,6~24 h的过氧化物酶(POD)和超氧化物歧化酶(SOD)活性显著提高,处理24 h耐盐基因CaNAC55和CaEIL8显著上调表达。这些发现为基于二氢卟吩铁的生物调节剂在辣椒栽培中的应用奠定了理论基础,并为增强作物耐盐性提供了可行策略。

关键词: 二氢卟吩铁, 辣椒, 盐胁迫, 生理特性, 基因表达

Abstract:

Salt stress is one of the major abiotic stresses restricting chili pepper (Capsicum annuum L.) production. This study elucidated the regulatory role and physiological mechanism of iron chlorine e6(ICE6),a novel plant growth regulator,in enhancing salt tolerance of chili pepper. A salt stress experiment with 200 mmol?L-1 NaCl was conducted to systematically analyze the effects of exogenously sprayed ICE6 on seed germination,seedling growth,key physiological and biochemical indexes,and the expression of salt-tolerant genes. The results showed that compared with the NaCl treatment,the ICE6+NaCl treatment significantly(p<0.05)increased the seed germination rate by 31.66 percentage points and the germination index by 76.79%,while significantly reduced the relative salt damage rate,effectively mitigating the inhibitory effect of salt stress on seed germination of chili pepper. At the seedling stage,ICE6 application significantly alleviated salt stress symptoms. Compared with the NaCl treatment,the relative electrical conductivity of the ICE6+NaCl treatment significantly decreased by 18.61,25.07,26.72,12.02 and 7.73 percentage points at 12,24,36,48,60 h,and significantly elevated the activities of peroxidase(POD)and superoxide dismutase(SOD)at 6-24 h. After 24 h of ICE6+NaCl treatment,the expression levels of salt-tolerant genes CaNAC55 and CaEIL8 were significantly up-regulated. These findings lay a theoretical basis for the application of ICE6-based bioregulators in pepper cultivation,and provide a feasible strategy for improving salt tolerance in crops.

Key words: iron chlorine e6, Capsicum annuum L., salt stress, physiological characteristic, gene expression

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