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<p>Sulphur is the fourth important macronutrient; however, studies are limited regarding its role in insect-plant interaction mechanism. We investigated the application of sulphur formulations mixed with compost, in comparison to an insecticide (carbosulfan) against a specialist herbivore, <i>Brevicoryne brassicae</i> (cabbage aphid) on <i>Brassica napus</i> (rapeseed). Insecticide was the most effective treatment having 17.59 aphid week<sup>−1</sup> followed by BS + Cp, ES, Cp, and BS having 21.96, 22.55, 24.92, 29.66 aphids, respectively. The BS + Cp revealed the highest total phenolics in leaves (13,110&#xa0;ppm), shoots (4253&#xa0;ppm), and seeds (2325&#xa0;ppm). The BS + Cp had better plant performance parameters compared to the non-infested control (shoot length: 23.50%; root length: 75.3%; fresh shoot weight: 43.80%; dry shoot weight: 80.03%). However, oil yield was highest in ES + Cp. Notably, nutrients' contents varied in leaves, shoots, and seeds. Nitrogen was maximum in BS, phosphorous (ES + Cp), potassium (BS + Cp), magnesium (Cp), iron (BS), calcium (BS + Cp), copper (insecticide), zinc (BS + Cp), and sulphur (ES). This offers a sustainable pest management strategy for optimizing rapeseed productivity. However, studies should be conducted to annotate the impacts of sulphur nutrition on soil biodiversity and molecular mechanism of sulphur-mediated pest resistance.</p>

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Sulphur Nutrition Improves Plant Growth Performance Against a Specialist Herbivore by Eliciting Phenolic Defense and Nutrient Induction in Rapeseed

  • 期刊论文

  • 发表日期：

    2025年9月25日

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  • Muhammad Wajid Javed,
  • Dilbar Hussain,
  • Muhammad Hasnain,
  • Mubshar Hussain,
  • Imran Ali

摘要

Sulphur is the fourth important macronutrient; however, studies are limited regarding its role in insect-plant interaction mechanism. We investigated the application of sulphur formulations mixed with compost, in comparison to an insecticide (carbosulfan) against a specialist herbivore, Brevicoryne brassicae (cabbage aphid) on Brassica napus (rapeseed). Insecticide was the most effective treatment having 17.59 aphid week−1 followed by BS + Cp, ES, Cp, and BS having 21.96, 22.55, 24.92, 29.66 aphids, respectively. The BS + Cp revealed the highest total phenolics in leaves (13,110 ppm), shoots (4253 ppm), and seeds (2325 ppm). The BS + Cp had better plant performance parameters compared to the non-infested control (shoot length: 23.50%; root length: 75.3%; fresh shoot weight: 43.80%; dry shoot weight: 80.03%). However, oil yield was highest in ES + Cp. Notably, nutrients' contents varied in leaves, shoots, and seeds. Nitrogen was maximum in BS, phosphorous (ES + Cp), potassium (BS + Cp), magnesium (Cp), iron (BS), calcium (BS + Cp), copper (insecticide), zinc (BS + Cp), and sulphur (ES). This offers a sustainable pest management strategy for optimizing rapeseed productivity. However, studies should be conducted to annotate the impacts of sulphur nutrition on soil biodiversity and molecular mechanism of sulphur-mediated pest resistance.