Abstract
Plants evolved to be a potential source of pharmacologically active compounds that are being widely accepted as insect repellent compounds for generations. Products of natural origin are mostly preferred over synthetic compounds because of fewer side effects on human health and the environment, have the potential to be produced locally, cost-effective, and are proved to be more efficient. They are best suited in organic food production and can play a much greater role in developing countries as a new class of eco-friendly products for controlling pests. In turn, the development of repellents is desirable alternatives to synthetic chemical insecticides for controlling pests. In the process of continual search for insect-based repellents of natural origin, a wide number of Tagetes species have been archived and all parts of this plant from root to seed possess a range of phytochemicals that are responsible for the repellent activity. The present study concentrates on the identification of active volatile compounds from Tageteserecta leaves by Gas chromatography-mass spectrometry (GC-MS) analysis and further evaluation through molecular docking studies of identified compounds against Mamestra brassicae.
Highlights
Over the decades, the tradition of utilizing plant derivatives as a potential defense barrier against a wide variety of insects has been globally accepted (Luthria et al.1993)
Botanical insecticides have been recommended as an alternative to synthetic insecticides for reducing the loss of crop yield that is being invaded by various pests or insects and pose only a negligible threat to the environment and human health
Plant-derived products (PDPs) are very useful on grounds with low mammalian toxicity, reduced environmental persistence, and complex chemistries that limit the development of pest resistance against them
Summary
The tradition of utilizing plant derivatives as a potential defense barrier against a wide variety of insects has been globally accepted (Luthria et al.1993). It was estimated that around 2000 species of botanicals are known to inherit some insecticidal activity (Klocke 1989) It is a well-known fact that solvent extracts and other secondary metabolites especially essential oils of many plants show differential levels of insect or bug-repellent properties (Chogo & Crank 1981, Curtis et al 1991, Trigg & Hill 1996, Thorsell et al 1998). In the process of evolution, the interplay between plants and pests or insects is an important determinant of plant yield. These plant-pest interactions that include volatile chemical passages have been widely utilized in the regulation of agricultural pests. In response to the attack, plants have developed a scope of resistance mechanisms to lessen the risk of damage and loss of yield or productivity (Mitchell et al 2016)
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