Table 4.
Invasive Plant | Extract | Phytochemical | Target Insect | Mode of Action | References |
---|---|---|---|---|---|
Ageratina adenophora (Spreng). | Aqueous | Epifriedelinol, stigmasterol, octacosanoic acid, 8-daucos tero1, 2- isopropeny1-5- acetyl-6-hydrxybenzofuran aceate and o-hydroxy einnamic acid | Rice weevil, maize weevil, Chinese bean weevil and European bean weevil | Toxicity | [161] |
Alternanthera brasiliana (L.) Kuntze | Ethanolic extract | Kaempferol and kaempferol analogs, quercetin and quercetin analogs, stigmasterol, β-sitosterol, spinasterol and ferulic acid | Drosophila melanogaster | Toxicity | [184] |
Ageratina adenophora (Spreng). | Ethyl acetate | Cadinene sesquiterpenes, 5,6-dihydroxycadinan-3-ene-2,7-dione | Meloidogyne incognita | Antinemic activity | [174] |
Ageratum conyzoides L. Lemmon grass |
Crude extracts | PONNEEM | Aedes, Anopheles, Culex spp. | Affects the oviposition rate and increases the deterrence percentage | [176,185] |
Methanol extracts | 6-demethyoxyageratochromene (precocene I) and ageratochromene (precocene II) | Preris rapae and Plutella xyloaella | Antifeeding effects | [125] | |
Mikania micrantha Kunth. | Methonal extract | Mikanin, eupalitin, eupafolin, (3,4′,5,7-tetra-hydroxy 6- methoxyflavone 3-O-β-D-glucopyranoside, luteolin, 3,5-di-O-caffeoylquinic acid n-butyl ester and 3,4-di-O-caffeoylquinic acid n-butyl ester were identified from M. micrantha | Oriental fruit fly | Repellent effects | [105] |
EOs | β-cubebene, terpinolene, β-caryophyllene, 1imonene, β-farnesene, ocimene, δcadino1, γ-terpinene, ethylnaphthalene, a-caryophy11ene, | Plutella xylostella, Phyllotretast riolata and Phaedon brassicae | Oviposition deterrent | [179,180] | |
Chromolaena odoratum L. |
Alcohol extracts | Chalcones and flavonols | Plutella xylostella | Repellent | [183] |
Crude extracts | Helicoverpa armigera | Antifeeding effects | [181] | ||
EOs | Trans-caryophyllene, β-cadinene, a-copaene, caryophyllene oxide, germacrene-D and n-humuhne | Phyllotreta striolata | Oviposition deterrent | [186] | |
Parthenium hysterophorus L. | Flower, leaf stem powders | Parthenin ageratochromene, precocene I, and precocene II have strong insecticidal effects, endo-borneol, farnesol, quercetin, kaempferol, and its glucosides | Callosobruchus chinensis | Repellency, inhibit cholinesterase | [187] |
Aqueous leaf and stem |
Aedes aegypti, Sitophious oryzae | Toxic and oviposition deterrent | [188,189] | ||
Melia azedarach L. | Aqueous extract Fruits |
Azadirachtin | Callosobruchus maculatus | Toxicity and repellency | [190] |