Scholarlink

Background <p>Herbivore-induced plant volatiles (HIPVs) play crucial roles in regulating plant defense responses. However, the functions of some HIPVs, particularly in maize seedlings responding to <i>Spodoptera frugiperda</i> larvae, are not well understood. In this study, the HIPVs from maize leaves infested by <i>S. frugiperda</i> were analyzed, larval choice assays for <i>S. frugiperda</i> were performed, and the effects of 4-ethylbenzaldehyde spraying on the maize leaves were assessed.</p> Results <p>Studies found that levels of 4-ethylbenzaldehyde significantly increased in maize leaves infested by fourth-instar <i>S. frugiperda</i>, which preferred healthy plants. Behavioral assays indicated that this compound effectively repelled the larvae. Spraying it significantly reduced leaf consumption and larval growth, while enhancing SOD, POD, and CAT activities, as well as levels of JA, SA, ABA, total flavonoids, and DIMBOA. Additionally, related defense response gene expression increased, and H<sub>2</sub>O<sub>2</sub> and MDA levels rose at 12&#xa0;h before returning to control levels at 24&#xa0;h.</p> Conclusions <p>These findings indicate that 4-ethylbenzaldehyde enhances maize resistance to <i>S. frugiperda</i> by repelling larvae and inducing plant defenses, including antioxidant enzymes, phytohormones, and secondary metabolites. This suggests that 4-ethylbenzaldehyde may be a valuable signal for enhancing defense responses in pest management.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Herbivore-induced 4-ethylbenzaldehyde enhances maize resistance to Spodoptera frugiperda larvae

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月18日

查看全文
  • Heqin Li,
  • Yangyang Su,
  • Yuanlai Zou,
  • Ru Jia,
  • Jinwen Yang,
  • Pengcheng Liu,
  • Haoxiang Yang,
  • Haiwang Yue,
  • Xingyue Li,
  • Xuwen Jiang

摘要

Background

Herbivore-induced plant volatiles (HIPVs) play crucial roles in regulating plant defense responses. However, the functions of some HIPVs, particularly in maize seedlings responding to Spodoptera frugiperda larvae, are not well understood. In this study, the HIPVs from maize leaves infested by S. frugiperda were analyzed, larval choice assays for S. frugiperda were performed, and the effects of 4-ethylbenzaldehyde spraying on the maize leaves were assessed.

Results

Studies found that levels of 4-ethylbenzaldehyde significantly increased in maize leaves infested by fourth-instar S. frugiperda, which preferred healthy plants. Behavioral assays indicated that this compound effectively repelled the larvae. Spraying it significantly reduced leaf consumption and larval growth, while enhancing SOD, POD, and CAT activities, as well as levels of JA, SA, ABA, total flavonoids, and DIMBOA. Additionally, related defense response gene expression increased, and H2O2 and MDA levels rose at 12 h before returning to control levels at 24 h.

Conclusions

These findings indicate that 4-ethylbenzaldehyde enhances maize resistance to S. frugiperda by repelling larvae and inducing plant defenses, including antioxidant enzymes, phytohormones, and secondary metabolites. This suggests that 4-ethylbenzaldehyde may be a valuable signal for enhancing defense responses in pest management.