Phototoxicity of Ultraviolet-A against the Whitefly Bemisia tabaci and Its Compatibility with an Entomopathogenic Fungus and Whitefly Parasitoid
文献类型: 外文期刊
第一作者: Khan, Muhammad Musa
作者: Khan, Muhammad Musa;Fan, Ze-Yun;Peng, Jing;Chen, Xin-Yi;Pan, Hui-Peng;Wu, Jian-Hui;Qiu, Bao-Li;Khan, Muhammad Musa;Pan, Hui-Peng;Wu, Jian-Hui;Qiu, Bao-Li;Fan, Ze-Yun;Pan, Hui-Peng;Wu, Jian-Hui;Qiu, Bao-Li;O'Neill Rothenberg, Dylan;Hafeez, Muhammad
作者机构:
期刊名称:OXIDATIVE MEDICINE AND CELLULAR LONGEVITY ( 影响因子:6.543; 五年影响因子:7.454 )
ISSN: 1942-0900
年卷期: 2021 年 2021 卷
页码:
收录情况: SCI
摘要: Ultraviolet (UV) radiation significantly affects insect life and, as a result, has been widely used to control different invertebrate pests. The current results demonstrate that when Bemisia tabaci first instar nymphs are exposed to UV-A light for 12, 24, 48, and 72 h, their developmental and biological parameters are negatively affected by UV-A exposure; the effect increased with an increase in exposure time. We hypothesized that UV-A light is compatible with other biological control agents. Results showed that when the entomopathogenic fungus Cordyceps fumosorosea was applied to third instar nymphs of B. tabaci previously exposed to UV-A light, the LC50 was 3.4% lower after 72 h of exposure to UV-A light compared to the control. However, when the fungus was exposed to UV-A light, its virulence decreased with an increase in UV-A exposure time. The parasitism rate of Encarsia formosa against 24 h UV-A-exposed third instar nymphs of B. tabaci increased while the adult emergence from parasitized nymphs was not affected after UV-A light exposure. Parasitism rate was significantly reduced however following E. formosa exposure to UV-A light; but again, adult emergence was not affected from parasitized nymphs. The percentage mortality of E. formosa increased with increasing exposure time to UV-A light. The enzyme activity of SOD, CAT, GST, and AChE and the energy reserve contents were negatively affected due to UV-A exposure. Collectively, this study has demonstrated that UV-A light significantly suppresses the immune system of B. tabaci and that UV-A light is compatible with other biological control agents if it is applied separately from the biological agent.
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