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Changes in antifungal defence systems during the intermoult period in the Colorado potato beetle Full article

Journal Journal of Insect Physiology
ISSN: 0022-1910 , E-ISSN: 1879-1611
Output data Year: 2019, Volume: 116, Pages: 106-117 Pages count : DOI: 10.1016/j.jinsphys.2019.05.003
Tags Ontogeny; Metarhizium; Cuticular hydrocarbons; Adhesion; Phenoloxidase; Encapsulation
Authors Tomilova Oksana G. 1 , Yaroslavtseva Olga N. 1 , Ganina Mariya D. 2 , Tyurin Maksim V. 1 , Chernyak Elena I. 2 , Senderskiy Igor V. 3 , Noskov Yury A. 1,4 , Polenogova Olga V. 1 , Akhanaev Yuriy B. 1 , Kryukov Vadim Yu. 1 , Glupov Viktor V. 1 , Morozov Sergey V. 2
Affiliations
1 (Данные Web of science) Russian Acad Sci, Siberian Branch, Inst Systemat & Ecol Anim, St Frunze 11, Novosibirsk 630091, Russia
2 (Данные Web of science) Russian Acad Sci, Siberian Branch, NN Vorozhtsov Novosibirsk Inst Organ Chem, Academician Lavrentyev Ave 9, Novosibirsk 630090, Russia
3 (Данные Web of science) All Russia Inst Plant Protect, Sh Podbelskogo,3, St Petersburg 196608, Russia
4 (Данные Web of science) Tomsk State Univ, St Lenin,36, Tomsk 634050, Russia

Abstract: Susceptibility to the fungus Metarhizium robertsii and changes in host defences were evaluated in different stages of the intermoult period (4-6 h, 34-36 h and 84-86 h post moult in IV larval instars) of the Colorado potato beetle. A significant thickening of the cuticle during larval growth was accompanied by decreases in cuticle melanization, phenoloxidase activity and epicuticular hydrocarbon contents (C28-C32). At the same time, a decrease in the conidial adhesion rate and an increase in resistance to the fungus were observed. In addition, we recorded significant elevation of the encapsulation rate and total haemocyte counts in the haemolymph during the specified period. The activity of detoxification enzymes decreased in the haemolymph but increased in the fat body during larval growth. No significant differences in the fatty acid content in the epicuticle were observed. The role of developmental disorders in susceptibility to entomopathogenic fungi is also discussed.
Cite: Tomilova O.G. , Yaroslavtseva O.N. , Ganina M.D. , Tyurin M.V. , Chernyak E.I. , Senderskiy I.V. , Noskov Y.A. , Polenogova O.V. , Akhanaev Y.B. , Kryukov V.Y. , Glupov V.V. , Morozov S.V.
Changes in antifungal defence systems during the intermoult period in the Colorado potato beetle
Journal of Insect Physiology. 2019. V.116. P.106-117. DOI: 10.1016/j.jinsphys.2019.05.003 WOS Scopus РИНЦ
Dates:
Published print: Jul 1, 2019
Identifiers:
Web of science WOS:000472704600013
Scopus 2-s2.0-85065481841
Elibrary 38698876
OpenAlex W2944669333
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