| Title: | Enzyme activity modification in adult beetles (Agelastica coerulea) inhabiting birch trees in an ozone-enriched atmosphere |
| Author(s): | Abu ElEla SA; Agathokleous E; Ghazawy NA; Amin TR; ElSayed WM; Koike T; |
| Address: | "Entomology Department, Faculty of Science, Cairo University, Giza, 12613, Egypt. Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, 7 Hitsujigaoka, Sapporo, 062-8516, Japan. globalscience@frontier.hokudai.ac.jp. Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-85889, Japan. globalscience@frontier.hokudai.ac.jp. Plant Protection Research Institute, Agricultural Research Centre, Dokki, Egypt. Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-85889, Japan. tkoike@for.agr.hokudai.ac.jp" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-018-3243-0 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "Tropospheric ozone (O(3)) is a naturally occurring gas in the atmosphere. However, the concentration of O(3) increased in the twentieth century. Although the effects of O(3) on vegetation have been extensively studied since the 1950s, limited information exists regarding the effects of O(3) on insect herbivores. In particular, evidence is lacking regarding the effects of O(3) on the biology of insect herbivores. Agelastica coerulea Baly (1874) is a coleopteran species that grazes on Betulaceae plants. In this study, to investigate the effects of O(3) on A. coerulea biology for the first time, female adult insects were collected from Japanese white birch trees grown in a Free Air Controlled Exposure System (FACE) in Sapporo, Japan. These beetles inhabited trees exposed either to ambient or to elevated O(3) for 23 days. After collection, the enzyme activities in the beetles were measured. Elevated O(3) led to a greater total antioxidant activity and lower alpha- and beta-esterase activities, a phenomenon that may suggest an increased resistance of the beetles to stress. Our results are further discussed with regard to biological and toxicological aspects. Collectively, our findings indicate that total antioxidants and alpha- and beta-esterase activities can serve as effective O(3) biomarker systems in this beetle species. This adaptive response of the beetle, which was induced by moderate O(3) exposure, should be further tested across generations and for its protection against greater exposure" |
| Keywords: | Air Pollutants/*toxicity Animals Antioxidants Atmosphere/chemistry Betula/*enzymology Betulaceae/*physiology Coleoptera *Environmental Monitoring Female Herbivory Japan Ozone/*toxicity Plant Leaves Trees Adaptive response Beetle Enzymes Esterase Hormesis; |
| Notes: | "MedlineAbu ElEla, Shahenda A Agathokleous, Evgenios Ghazawy, Nirvina A Amin, Tarek R ElSayed, Wael M Koike, Takayoshi eng 26292075/Japan Society for the Promotion of Science/ 16K14932/Japan Society for the Promotion of Science/ Germany 2018/09/24 Environ Sci Pollut Res Int. 2018 Nov; 25(32):32675-32683. doi: 10.1007/s11356-018-3243-0. Epub 2018 Sep 22" |
