Silver Nanoparticles Impact Disease Control in Various Wheat Types

Jenn Hoskins
24th July, 2024

Silver Nanoparticles Impact Disease Control in Various Wheat Types

Silver nanoparticles (AgNPs) demonstrate a strong antibacterial effect against Pseudomonas bacteria, creating a zone of growth inhibition (a) comparable or superior to that of several standard antibiotics (b).

Image adapted from: Fatemifard et al. / CC BY (Source)

Key Findings

  • The study by Yasouj University in Iran explored using silver nanoparticles (AgNPs) to control bacterial blight in 27 wheat cultivars
  • AgNPs increased soluble protein content and antioxidant enzyme activities in wheat, enhancing disease resistance
  • The findings suggest AgNPs can improve wheat resilience and yield stability, offering a sustainable alternative to chemical treatments
Bacterial blight is a significant global disease affecting wheat crops, leading to substantial yield losses. Addressing this issue, a recent study by Yasouj University investigated the potential of silver nanoparticles (AgNPs) to control bacterial blight in 27 locally grown wheat cultivars[1]. The study focused on the biochemical and antioxidant responses of these cultivars to AgNPs at three different time points: 1, 3, and 5 days after disease onset. The research revealed that the application of AgNPs influenced the soluble protein content and antioxidant enzyme activities in wheat cultivars. For instance, one day after disease stress, the Inia cultivar showed the highest soluble protein content (55.60 μg.g−1FW) without AgNP treatment, while the Azadi cultivar had the lowest (15.71 μg.g−1FW). The Tabasi cultivar exhibited the highest superoxide dismutase (SOD) activity (61.62 mM.g−1FW) with AgNP treatment, contrasting with the Karchia cultivar, which had the lowest SOD activity (0.6 mM.g−1FW) without AgNPs. Three days post-stress, the Mahdavi cultivar had the highest soluble protein content (54.16 μg.g−1FW) without AgNPs, and the Niknejad cultivar showed the highest SOD activity (74.15 mM.g−1FW) without AgNPs. Conversely, the Kavir cultivar had the lowest SOD (1.95 mM.g−1FW) and peroxidase (POX) activity (0.241 mM g−1FW min−1) with AgNP treatment. Five days after stress, the Mahooti cultivar demonstrated the highest SOD activity (88.12 mM.g−1FW) with AgNPs, while the Karchia cultivar had the lowest SOD activity (2.39 mM.g−1FW) with AgNPs. The study's findings suggest that AgNPs can enhance the antioxidant properties of wheat seeds under both blight-infected and disease-free conditions in some cultivars. This aligns with previous research indicating that nanomaterials can influence plant metabolic activities positively or negatively, depending on their type and concentration[2]. For example, ENMs (Engineered Nanomaterials) have been shown to improve photosynthetic efficiency by increasing chlorophyll content and light absorption, which could be beneficial for plant growth and development[2]. Moreover, the study's implications are significant for countries like Pakistan, where rainfed wheat farming is highly susceptible to climate variability[3]. The introduction of AgNPs could provide a new method to stabilize wheat yields and enhance crop resilience against diseases, addressing yield instability caused by climatic factors such as temperature rise and precipitation variability[3]. Additionally, the use of AgNPs could potentially reduce the ecological footprint of wheat production. Previous studies have shown that wheat production in Iran has the highest resource use costs, including water, energy, and carbon emissions, compared to other crops[4]. By improving disease resistance and potentially reducing the need for chemical treatments, AgNPs could contribute to more sustainable agricultural practices. In summary, the study by Yasouj University highlights the potential of silver nanoparticles in managing bacterial blight in wheat. By enhancing the antioxidant properties of wheat cultivars, AgNPs offer a promising solution to improve crop resilience and yield stability. This research not only builds on previous findings regarding the impact of nanomaterials on plant metabolism but also provides a practical approach to addressing agricultural challenges in regions vulnerable to climate variability and resource constraints.

AgricultureBiotechPlant Science

References

Main Study

1) Exogenously applied silver nanoparticles (AgNPs) differentially affect bacterial blight disease control in twenty-seven wheat cultivars

Published 23rd July, 2024

https://doi.org/10.1186/s12870-024-05424-7

Related Studies

2) Engineered nanomaterial-mediated changes in the metabolism of terrestrial plants.

https://doi.org/10.1016/j.scitotenv.2016.07.184

3) Wheat yield response to input and socioeconomic factors under changing climate: Evidence from rainfed environments of Pakistan.

https://doi.org/10.1016/j.scitotenv.2019.06.266

4) Ecological footprints of environmental resources for agricultural production in Iran: a model-based study.

https://doi.org/10.1007/s11356-021-15119-3


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