Toxicity and deleterious effects of Artemisia annua essential oil extracts on mulberry pyralid (Glyphodes pyloalis).

Autor: Oftadeh M; Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran., Sendi JJ; Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran; Silk Research Deparment, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran. Electronic address: jjalali@guilan.ac.ir., Ebadollahi A; Moghan College of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran.
Jazyk: angličtina
Zdroj: Pesticide biochemistry and physiology [Pestic Biochem Physiol] 2020 Nov; Vol. 170, pp. 104702. Date of Electronic Publication: 2020 Sep 11.
DOI: 10.1016/j.pestbp.2020.104702
Abstrakt: Botanical extracts are an important source of bio-pesticides and are generally considered safe to the environment. Artemisia annua L, a medicinal plant, well known for its antimalarial potential, was evaluated as a source of a type of essential oil collected during vegetative growth stage against Glyphodes pyloalis Walker. The main chemical components of the essential oil at vegetative stage of Artemisia annua was analyzed by GC- MS and contained 1,8-cineole (18.68%), Camphor (11.4%), α-Pinene (9.3%) and 3-Carene (6.3%). The LC 50 of this plant oil was estimated to be 0.652% W/V and 2.585 μL/L air incorporated orally and fumigation, respectively. The digestive enzymes such as α-amylases, Proteases, Lipases and α- and β-glucosidases were considereably inhibited in treated larvae compared with controls. Similarly, the amount of protein, glucose, and triglyceride were decreased in the treated larvae by methods used. The lower hemocyte numbers, nodule formation and activity of phenoloxidases after injection of Beauveria bassiana and latex beads showed its EO effect on immunity. The anatomy of the larval midgut after treatment showed degeneration in digestive cells. Emerging adult's ovaries showed significant changes in the ovarian sheath and lack of yolk spheres. The present investigation in accordance with our previous studies may ultimately lead to a formulation in controlling this notorious pest especially in mulberry orchards where the use of conventional chemicals is restricted.
(Copyright © 2020 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE