欢迎访问中国生物防治学报,今天是

中国生物防治学报 ›› 2026, Vol. 42 ›› Issue (4): 969-982.DOI: 10.16409/j.cnki.2095-039x.2026.02.048

• 研究论文 • 上一篇    

抗烟草花叶病毒1% fTDP蛋白可湿性粉剂的制备及生防评价

文旭, 刘鑫, 张焕然, 王建枫, 涂班武, 漆育婷, 吴丽萍   

  1. 南昌大学生命科学学院, 南昌 330031
  • 收稿日期:2025-06-17 发布日期:2026-08-26
  • 通讯作者: 吴丽萍,女,教授,E-mail:lpwu000@ncu.edu.cn。
  • 作者简介:文旭,男,硕士研究生,E-mail:3013397373@qq.com
  • 基金资助:
    江西省自然科学基金(20252BAC250143)

Preparation and Biocontrol Efficacy of 1% fTDP Protein Wettable Powder on Tobacco Mosaic Virus

WEN Xu, LIU Xin, ZHANG Huanran, WANG Jianfeng, TU Banwu, QI Yuting, WU Liping   

  1. School of Life Sciences, Nanchang University, Nanchang 330031, China
  • Received:2025-06-17 Published:2026-08-26

摘要: fTDP是上皮电阻降低蛋白(Transepithelial electrical resistance-decreasing protein,TDP)的大肠杆菌重组表达蛋白,能够诱导烟草产生对烟草花叶病毒(Tobacco mosaic virus,TMV)的抗性,为提升fTDP蛋白的田间应用效果,本研究以生物相容性与制剂质量指标为筛选依据,获得对TMV具有防治效果的1%fTDP可湿性粉剂配方,并进一步在盆栽及田间条件下验证其对烟草诱导抗性效果。结果表明,该制剂的最佳配方为吸附fTDP粗蛋白的硅藻土为载体(90%),添加十二烷基苯磺酸钠(5%)与亚甲基双甲基萘磺酸钠(5%)。温室盆栽结果显示,与fTDP蛋白溶液相比,1%fTDP可湿性粉剂的施用可显著降低烟草TMV含量,并可上调抗病相关基因NPR1PR1PR1aPR1b的转录表达水平,提高超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)等防御酶活性。周期21 d的田间试验结果表明,1%fTDP蛋白可湿性粉剂对TMV的平均防效为49.6%,优于纯fTDP蛋白(39.2%),与8%宁南霉素的防效接近。本研究构建的fTDP蛋白可湿性粉剂配方,为蛋白诱抗剂剂型改良与田间抗病机制的后续研究提供了试验依据。

关键词: 诱导抗病性, 烟草花叶病毒, fTDP, 可湿性粉剂

Abstract: Transepithelial electrical resistance-decreasing protein(TDP), produced as a recombinant protein(fTDP) in Escherichia coli, can induce resistance to tobacco mosaic virus(TMV) in tobacco. To improve its performance under field conditions, formulation carriers and additives were screened based on biocompatibility and formulation quality parameters. A 1% fTDP wettable powder(WP) with activity against TMV was subsequently developed, and its resistance-inducing efficacy was evaluated in greenhouse pot experiments and field trials. The optimized formulation comprised diatomite loaded with crude fTDP as the carrier(90%), sodium dodecylbenzenesulfonate as the wetting agent(5%), and methylene bis-methylnaphthalene sulfonate as the dispersant(5%). In greenhouse experiments, treatment with the 1% fTDP WP significantly reduced TMV accumulation in tobacco plants compared with the fTDP protein solution. The formulation also upregulated the transcription of the defense-related genes NPR1, PR1, PR1a, and PR1b, and enhanced the activities of defense enzymes, including superoxide dismutase(SOD), peroxidase(POD), and catalase(CAT). In a 21-day field trial, the 1% fTDP WP achieved an average control efficacy of 49.6% against TMV, which was superior to unformulated fTDP(39.2%) and comparable to 8% ningnanmycin. These findings provide an experimental basis for the future optimization of protein elicitor formulations formulations and further investigation of field disease-resistance mechanism.

Key words: inducing disease resistance, tobacco mosaic virus, fTDP, wettable powder

中图分类号: