蚜虫蜜露中的细菌挥发物介导瓢虫选择产卵地点

IF 3.8 1区农林科学 Q1 AGRONOMY

Pest Management Science Pub Date : 2025-03-13 DOI:10.1002/ps.8771

Xueqing Li, Pan Wang, Wenrong Wang, Boya Jiao, Shichang Zhang, Yu Peng, Wen Sang, Yao Zhao

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引用次数: 0

摘要

棉瓜蚜是一种世界性的破坏性害虫，对多种作物造成严重危害。瓢虫Propylea japonica Thunberg是棉蚜的优势天敌。迄今为止，日本稻的化学线索与产卵地点的选择仍然不清楚。结果未灭菌的生蜜露对杂交粳稻具有较强的吸引力。从粗蜜露中分离到8株细菌，其中2株（不动杆菌属和假单胞菌属）具有显著的吸引力。对这些细菌的挥发物进行了鉴定，并发现三种化合物- dl -乳酸，4,6 -二甲基- 2 -庚酮和邻苯二甲酸二十二烷基-在嗅觉测定中显著吸引交配的日本假单胞虫。进一步的笼内实验证实，粳稻偏好在这些挥发性物质附近产卵。结论棉瓜蚜虫甘露相关菌产生的挥发物影响瓢虫的产卵地点选择。这些发现有助于制定以生物学为基础的环境友好型农业有害生物管理战略。©2025化学工业协会。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Bacterial volatiles from aphid honeydew mediate ladybird beetles oviposition site choice

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Bacterial volatiles from aphid honeydew mediate ladybird beetles oviposition site choice

BACKGROUND

The cotton-melon aphid Aphis gossypii Glover is a destructive pest worldwide that causes substantial damage to diverse crops. The ladybird beetle Propylea japonica Thunberg is the dominant predatory natural enemy of A. gossypii. To date, the chemical cues of P. japonica associated with the selection of oviposition sites remain unclear.

RESULTS

Our results revealed that crude honeydew, but not sterilized honeydew, was strongly attractive to mated P. japonica. A total of eight bacterial strains were isolated from crude honeydew, with two (Acinetobacter sp. and Pseudomonas sp.) showing significant attractiveness. Volatiles from these bacteria were identified, and three compounds—DL-lactic acid, 4, 6-dimethyl-2-heptanone, and didodecyl phthalate—were found to significantly attract mated P. japonica in olfactometer assays. Further cage experiments confirmed that P. japonica preferred oviposition sites near these volatile substances.

CONCLUSION

The oviposition site selection by the ladybird beetle P. japonica was found to be influenced by volatiles produced by bacteria associated with cotton-melon aphid honeydew. These findings contribute to biologically based, environmentally friendly pest management strategies in agriculture. © 2025 Society of Chemical Industry.

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.