Fabrication of three-dimension hierarchical structure CuO nanoflowers and their antifungal mechanism against Bipolaris sorokiniana

  • Int J Food Microbiol. 2024 Feb 2:411:110551. doi: 10.1016/j.ijfoodmicro.2023.110551.
Tenglong Xie  1 ,  Jiaxiang Wang  1 ,  Shibo Zhang  1 ,  Jinhui Song  1 ,  Guangtao Zan  2 ,  Jiakai Wu  1 ,  Risong Na  1 ,  Qingnan Wu  3 ,  Rui He  4
Affiliations
  • 1. College of Plant Protection, NanoAgro Center, Henan Agricultural University, Zhengzhou 450046, China.
  • 2. Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
  • 3. College of Plant Protection, NanoAgro Center, Henan Agricultural University, Zhengzhou 450046, China. Electronic address: [email protected].
  • 4. College of Plant Protection, NanoAgro Center, Henan Agricultural University, Zhengzhou 450046, China. Electronic address: [email protected].
PMID: 38171235 DOI: 10.1016/j.ijfoodmicro.2023.110551
Abstract

Nanomaterials are widely investigated in sustainable agriculture owing to their unique physicochemical properties, especially Cu-based nanomaterial with eco-friendliness and essential for plant. However, the effect of CuO nanomaterial on Bipolaris sorokiniana (B. sorokiniana) is yet to be systematically understood. In this study, a three-dimension hierarchical structure CuO nanoflower (CuO NF) with ultrathin petals and excellent dispersibility in water was constructed and proved to have outstanding Antifungal activity against B. sorokiniana with the inhibition rate of 86 % in mycelial growth, 74 % in mycelial dry weight and 75 % in conidial germination. Furthermore, the Antifungal mechanism was assigned to the production of Reactive Oxygen Species in intracellular caused by antioxidant mimicking activity of CuO NF to damage of cell membrane integrity and result cellular leakage. Additionally, the good control effect of CuO NF on wheat diseases caused by B. sorokiniana was demonstrated through pot experiment. This article firstly reveals the Antifungal activity and mechanism of CuO NF on B. sorokiniana, and establishes the relationship between enzyme-like activity of CuO NF and its Antifungal activity, which provides a promising application of Cu-based nanomaterial as nanofungicide in plant protection and a theoretical foundation for structure design of nanomaterials to improve their Antifungal activities.

Keywords
Antifungal activity; Antifungal mechanism; Bipolaris sorokiniana; CuO nanoflower; Nanoenzyme properties.
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