浙江农业学报 ›› 2025, Vol. 37 ›› Issue (2): 394-404.DOI: 10.3969/j.issn.1004-1524.20240093

• 植物保护 • 上一篇    下一篇

促生菌对上海青(Brassica rapa subsp. chinensis)降解噻虫嗪的影响

胡睿1,2(), 马丽雅2, 万群2, 王亚2, 曹瑶瑶2, 邵思城1, 葛静2, 吴祥为1,*(), 余向阳2,*()   

  1. 1.安徽农业大学 资源与环境学院,安徽 合肥 230031
    2.江苏省农业科学院 农产品质量安全与营养研究所,省部共建国家重点实验室培育基地-江苏省食品质量安全重点实验室,江苏 南京 210014
  • 收稿日期:2024-01-28 出版日期:2025-02-25 发布日期:2025-03-20
  • 作者简介:余向阳,E-mail:yuxy@jaas.ac.cn
    吴祥为,E-mail:wxw@ahau.edu.cn;
    胡睿(2000—),女,安徽安庆人,硕士研究生,主要从事环境微生物研究。E-mail:hurui001008@163.com
  • 通讯作者: 吴祥为,余向阳
  • 基金资助:
    国家自然科学基金(22206064);国家自然科学基金(32302406)

Effect of growth-promoting bacteria on the degradation of thiamethoxam in Brassica rapa subsp. chinensis

HU Rui1,2(), MA Liya2, WAN Qun2, WANG Ya2, CAO Yaoyao2, SHAO Sicheng1, GE Jing2, WU Xiangwei1,*(), YU Xiangyang2,*()   

  1. 1. College of Resources and Environment, Anhui Agricultural University, Hefei 230031, China
    2. Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
  • Received:2024-01-28 Online:2025-02-25 Published:2025-03-20
  • Contact: WU Xiangwei,YU Xiangyang

摘要:

为探讨促生菌及其复合菌群对上海青(Brassica rapa subsp. chinensis)降解噻虫嗪的影响,以假单胞菌NS6、肠杆菌NS54和NS62、嗜水气单胞菌NS69为材料,采用拮抗试验测定菌株间的相容性,结合促生特性实验,筛选构建复合菌群的菌株;通过盆栽试验,研究促生单菌株与复合菌群对上海青生长、品质和降解噻虫嗪的影响。结果表明,各菌株间不存在拮抗关系,且NS54+NS62+NS69复合菌群促生效果最好。盆栽结果显示,单菌株和最佳复合菌群处理均能提高上海青的株高、根长、鲜重、干重和叶绿素含量,有效降低噻虫嗪处理后上海青的MDA含量,同时提高上海青的可溶性糖、可溶性蛋白和维生素C含量,且复合菌群的处理效果优于单菌株。此外,NS54+NS62+NS69复合菌群能上调上海青中抗逆植物激素(水杨酸和茉莉酸)相关基因的表达,从而促进上海青中噻虫嗪的降解。综上,NS54+NS62+NS69复合菌群在促进上海青生长、提高上海青品质的同时,有效降低了上海青中噻虫嗪的残留量。研究结果为保障农产品质量安全、开发功能微生物菌剂提供了重要的理论基础。

关键词: 促生菌, 复合菌群, 噻虫嗪, 上海青, 促生, 降解

Abstract:

To explore the impact of plant growth-promoting bacteria and their combined consortia on the degradation of thiamethoxam in Brassica rapa subsp. chinensis, this study used Pseudomonas sp. (NS6), Enterobacter sp. (NS54 and NS62), and Aeromonas hydrophila(NS69) as materials. Antagonistic tests were conducted to determine the compatibility between the strains, and based on plant growth-promoting characteristics experiments, the strains for constructing the composite microbial community were screened. Through pot experiments, the effects of single plant growth-promoting bacterium and the best-performing microbial consortium on the growth, quality, and thiamethoxam degradation in B. rapa subsp. chinensis were studied. The results showed that there was no antagonistic relationship among the strains, and the NS54+NS62+NS69 microbial consortium exhibited the best plant growth-promoting performance. The pot experiment results revealed that both the single strain treatments and the optimal microbial consortium treatment could improve the plant height, root length, fresh weight, dry weight, and chlorophyll content of B. rapa subsp. chinensis. They effectively reduced the malondialdehyde (MDA) content after thiamethoxam treatment and increased the contents of soluble sugars, soluble proteins, and vitamin C in B. rapa subsp. chinensis, with the microbial consortium treatment being superior to that of the single strain treatments. Additionally, the NS54+NS62+NS69 microbial consortium upregulated the expression of stress-responsive plant hormones (salicylic acid and jasmonic acid) related genes in B. rapa var. chinensis, thereby promoting the degradation of thiamethoxam. In summary, the NS54+NS62+NS69 microbial consortium not only promoted the growth and improved the quality of B. rapa subsp. Chinensis, but also effectively reduced the residual amount of thiamethoxam in the plant. This study result could provide an important theoretical foundation for ensuring the quality and safety of agricultural products and developing functional microbial agents

Key words: growth-promoting bacterium, microbial consortium, thiamethtoxam, Brassica rapa subsp. chinensis, growth-promotion, degradation

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