Other species of plant biological pesticides

Artemisinin is a sesquiterpenoid compound isolated from barley (Artemisia annua). Artemisinin and its analogues have antifeedant activity against cabbage butterfly and Plutella xylostella larvae.

Artemisinin is an active compound isolated from the vegetable Artemisia selengensis. Artemisinin and its analogues have good antifeedant, growth inhibition and toxic activities against Plutella xylostella, Pieris rapae and Spodoptera litura larvae. It can significantly reduce the body wall, hemolymph, hemolymph protein, hemolymph total glycogen and larval glycogen content, reduce the number of blood cells and inhibit the activity of midgut esterase.

Pyrethroid is an insecticidal active substance isolated from pyrethrum, and the natural component is photolabile. It is a kind of phytochemical insecticide with a long history.

Anisodactone is a kind of insecticidal active substance extracted from the genus Annona. It has been isolated from 26 species of Annona sinensis. Its mechanism of action is similar to that of rotenone, through the NADH-cytochrome. c specific inhibition of reductase, inhibiting the respiratory function of cells.

The insecticidal components of Rhododendron chinense are mainly found in flowers and young leaves, including xytoxin, rhododendron, spartanol, rhodojaponins and gryanotoxins. There are currently 9 kinds of yellow rhododendron toxins isolated, namely, cucurbitacin I, II, III, arbutin-II, III, V, rhodomallein-I, III, and kallmanol.

Alkaloids are insecticidal active substances extracted from medicinal plants, such as nicotine, matrine and the like. By 1999, there were 11 pesticide plants producing matrine insecticides in China, which was the most widely produced variety of plant insecticides. Some insecticidal alkaloids provide lead compounds for the biomimetic synthesis of insecticides, such as physostigmine, nicotine, and the like. Studying the action mode and mechanism of action of insecticidal alkaloids on insects provides a novel target for the development of insecticides.

Isobutylamide and cucurbitine act on the sodium ion channel and are not the same as all active insecticides. The specificity of the target has been taken seriously, and the research has entered the stage of structural optimization.

Celastrusangulata, also known as the southern snake vine, vegetable worm, etc., belongs to the genus Celastrus of the genus Celastraceae. Its main component is sesquiterpenoids, which have been isolated from scutellariae. At least 18 compounds were identified, including one antifeedant component (Calpidin I), six poisonous components, and 11 anesthetic components (represented by celangulin IV). These compounds are dihydro, agarinopyran polyesters containing only C, H and O, and are bicyclic sesquiterpenes. The insecticidal active ingredient of celeria serrata is celangulin I and celangulin IV.

China Pesticide Network

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