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<p>Weeds are a&#xa0;major constraint to global agricultural productivity, causing significant crop yield losses. Although chemical and mechanical methods remain widely used for weed control, increasing concerns regarding environmental contamination, herbicide resistance, and risks to human health have encouraged the search for sustainable alternatives. Allelopathy, the biological phenomenon in which plants release secondary metabolites (allelochemicals) that influence the growth and development of neighbouring plants, has emerged as a&#xa0;promising natural strategy for weed management. Allelochemicals are released from different plant parts, including leaves, stems, and roots, with root exudation being a&#xa0;major pathway for their transfer into the surrounding environment. This review examines allelochemicals and their release through leaves, stems, and roots, which are regulated by genes and environmental factors. Root exudates serve as the primary release pathway and transport proteins play crucial roles. This study examined the factors affecting allelochemical release and explored the potential of biotechnology to enhance allelopathic traits for natural weed control. The discussion includes genetic engineering to identify the genes responsible for allelochemical synthesis, with the aim of developing weed-suppressive crops. The creation of transgenic plants with improved allelopathic characteristics has emerged as a&#xa0;promising research area. Biotechnology enables the efficient production of allelochemicals in bioherbicides, offering eco-friendly alternatives to conventional weed management. Understanding allelopathy can help developing sustainable weed management strategies for healthier agricultural ecosystems. This reduces the use of synthetic herbicides and protects the environment from chemical pollution. However, despite promising laboratory evidence, the effectiveness of allelopathy under field conditions remains variable, and further ecological and agronomic studies are required before it can be widely adopted as a&#xa0;reliable strategy for weed management.</p>

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Allelopathy: A Natural Approach to Weed Management

  • 期刊论文

  • 发表日期：

    2026年5月4日

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  • Mo Shadab,
  • Farha Aijaz,
  • Nazish Akhtar,
  • Quratul-ain,
  • Saima Malik,
  • M. B. Siddiqui

摘要

Weeds are a major constraint to global agricultural productivity, causing significant crop yield losses. Although chemical and mechanical methods remain widely used for weed control, increasing concerns regarding environmental contamination, herbicide resistance, and risks to human health have encouraged the search for sustainable alternatives. Allelopathy, the biological phenomenon in which plants release secondary metabolites (allelochemicals) that influence the growth and development of neighbouring plants, has emerged as a promising natural strategy for weed management. Allelochemicals are released from different plant parts, including leaves, stems, and roots, with root exudation being a major pathway for their transfer into the surrounding environment. This review examines allelochemicals and their release through leaves, stems, and roots, which are regulated by genes and environmental factors. Root exudates serve as the primary release pathway and transport proteins play crucial roles. This study examined the factors affecting allelochemical release and explored the potential of biotechnology to enhance allelopathic traits for natural weed control. The discussion includes genetic engineering to identify the genes responsible for allelochemical synthesis, with the aim of developing weed-suppressive crops. The creation of transgenic plants with improved allelopathic characteristics has emerged as a promising research area. Biotechnology enables the efficient production of allelochemicals in bioherbicides, offering eco-friendly alternatives to conventional weed management. Understanding allelopathy can help developing sustainable weed management strategies for healthier agricultural ecosystems. This reduces the use of synthetic herbicides and protects the environment from chemical pollution. However, despite promising laboratory evidence, the effectiveness of allelopathy under field conditions remains variable, and further ecological and agronomic studies are required before it can be widely adopted as a reliable strategy for weed management.