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首页> 外文期刊>New Journal of Chemistry >Graphene oxide as a pesticide carrier for enhancing fungicide activity against Magnaporthe oryzae
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Graphene oxide as a pesticide carrier for enhancing fungicide activity against Magnaporthe oryzae

机译：石墨烯氧化物作为农药载体，用于增强杀菌剂的杀菌剂活性对抗Magnaporthe Oryzae

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摘要

The fungus Magnaporthe oryzae causes disastrous consequences for rice growth. Carbendazim (CBZ) has been extensively used for disease management. However, because of the heavy use of traditional CBZ, a majority of CBZ is wasted, resulting in an extremely low utilization rate and severe pollution problems. In this work, carbendazim-graphene oxide (CBZ-GO) and carbendazim-ultrasonic graphene oxide (CBZ-UGO) were synthesized for use against rice blast. The EC50 of CBZ-GO and CBZ-UGO on the mycelium of Magnaporthe oryzae was 0.28 and 0.41 mu g mL(-1), which showed 2.29- and 1.56-fold higher antifungal activity than the EC50 (0.64 mu g mL(-1)) of CBZ, respectively. GO can destroy mycelia and compromise cell integrity as confirmed from the SEM images of mycelia. Nanocomposites can damage glutathione on the cell membrane through an electron transfer to weaken the fungus cell activity. Moreover, the application of nanocomposites on rice seedlings significantly reduced the severity of rice blast compared to other processing groups in a greenhouse experiment. Therefore, GO as a high-efficiency carrier would offer an important opportunity for managing fungal diseases.
机译：稻瘟菌对水稻生长造成灾难性后果。多菌灵（CBZ）已广泛用于疾病管理。然而，由于传统CBZ的大量使用，大部分CBZ被浪费，导致了极低的利用率和严重的污染问题。本研究合成了用于防治稻瘟病的多菌灵氧化石墨烯（CBZ-GO）和多菌灵超声氧化石墨烯（CBZ-UGO）。CBZ-GO和CBZ-UGO对稻瘟病菌菌丝体的EC50分别为0.28和0.41μg mL（-1），其抗真菌活性分别是CBZ的EC50（0.64μg mL（-1））的2.29倍和1.56倍。从菌丝体的SEM图像可以证实，GO可以破坏菌丝体并损害细胞完整性。纳米复合材料可以通过电子转移破坏细胞膜上的谷胱甘肽，从而削弱真菌细胞的活性。此外，在温室试验中，与其他处理组相比，纳米复合材料在水稻幼苗上的应用显著降低了稻瘟病的严重程度。因此，GO作为一种高效的载体将为真菌疾病的治疗提供重要的机会。

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  • 来源
    《New Journal of Chemistry》 |2021年第5期|共10页
  • 作者

    Hu Pengtong; Zhu Li; Zheng Feng; Lai Jingyun; Xu Hanhong; Jia Jinliang;

  • 作者单位

    South China Agr Univ Coll Mat &

    Energy Key Lab Biobased Mat &

    Energy Minist Educ Guangzhou 510642 Guangdong Peoples R China;

    South China Agr Univ Coll Mat &

    Energy Key Lab Biobased Mat &

    Energy Minist Educ Guangzhou 510642 Guangdong Peoples R China;

    South China Agr Univ Coll Mat &

    Energy Key Lab Biobased Mat &

    Energy Minist Educ Guangzhou 510642 Guangdong Peoples R China;

    South China Agr Univ Coll Mat &

    Energy Key Lab Biobased Mat &

    Energy Minist Educ Guangzhou 510642 Guangdong Peoples R China;

    South China Agr Univ Key Lab Nat Pesticide &

    Chem Biol Minist Educ Guangzhou 510642 Peoples R China;

    South China Agr Univ Coll Mat &

    Energy Key Lab Biobased Mat &

    Energy Minist Educ Guangzhou 510642 Guangdong Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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