Synergy in Efficacy of Artemisia sieversiana Crude Extract and Metarhizium anisopliae on Resistant Oedaleus asiaticus

文献类型： 外文期刊

第一作者： Li, Shuang

作者： Li, Shuang;Xu, Chaomin;Wang, Guangjun;Tu, Xiongbing;Zhang, Zehua;Li, Shuang;Xu, Chaomin;Wang, Guangjun;Tu, Xiongbing;Zhang, Zehua;Du, Guilin

作者机构：

关键词： Artemisia; Metarhizium anisopliae; Oedaleus asiaticus; synergetic control; biopesticide

期刊名称：FRONTIERS IN PHYSIOLOGY （ 影响因子：3.367； 五年影响因子：3.697 ）

ISSN： 1664-042X

年卷期： 2021 年 12 卷

页码：

收录情况： SCI

摘要： In order to explore the synergistic control effect of crude extracts of Artemisia sieversiana and Metarhizium anisopliae on Oedaleus asiaticus, we used different doses of M. anisopliae and crude extracts of A. sieversiana singly and in combination, to determine their toxicities to fourth instar O. asiaticus. The results showed that the combination of 10% crude extract of A. sieversiana with 10(7) and 10(8) spores/g M. anisopliae concentrations and the combination of 20% crude extract of A. sieversiana with 10(7) and 10(8) spores/g M. anisopliae concentrations had significant effects on the mortality, body weight gain, body length gain, growth rate, and overall performance of O. asiaticus than those of the crude extract of A. sieversiana and M. anisopliae alone. Among them, the 20% A. sieversiana crude extract mixed with 10(8) spores/g M. anisopliae and 10% A. sieversiana crude extract combined with 10(7) spores/g M. anisopliae, had the best control efficacy. In order to clarify the biochemical mechanism underlying the immune responses of O. asiaticus to the pesticide treatments, we monitored the activities of four enzymes: superoxidase dismutase (SOD), peroxidase (POD), catalase (CAT), and polyphenol oxidase (PPO). The results showed that the activities of three enzymes (SOD, CAT, and PPO) were significantly increased from the treatment with the combination of M. anisopliae mixed with crude extract of A. sieversiana. Interestingly, compared to the crude extract, the combination treatment did not significantly induce the expression of POD enzyme activity, which may be a biochemical factor for increasing the control effect of the combination treatment. Our results showed that the combination treatment had synergistic and antagonistic effects on host mortality, growth, development, and enzyme activities in O. asiaticus.

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