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Four opsin genes (\n MpLW<\/jats:italic>\n ,\n MpUV1<\/jats:italic>\n ,\n MpUV2<\/jats:italic>\n , and\n MpUV\u2010Like<\/jats:italic>\n ) were cloned and characterized, revealing distinct spatiotemporal expression patterns. Ultraviolet (UV) irradiation induced\n MpUV1<\/jats:italic>\n ,\n MpUV2<\/jats:italic>\n , and\n MpUV\u2010Like<\/jats:italic>\n expression, whereas green and yellow light preferentially up\u2010regulated\n MpLW<\/jats:italic>\n . RNA interference combined with wavelength\u2010specific behavioral assays demonstrated that\n MpUV1<\/jats:italic>\n and\n MpUV2<\/jats:italic>\n are essential for UV\u2010mediated phototaxis, while\n MpLW<\/jats:italic>\n governs phototactic responses to long\u2010wavelength light. Our results indicated that knockdown of either\n MpUV1<\/jats:italic>\n or\n MpUV2<\/jats:italic>\n significantly reduced the phototactic response of\n M. persicae<\/jats:italic>\n to UV light, while knockdown of\n MpLW<\/jats:italic>\n significantly reduced its response to both green and yellow light. Furthermore, the combined knockdown of all three opsins (\n MpUV1<\/jats:italic>\n ,\n MpUV2<\/jats:italic>\n and\n MpLW<\/jats:italic>\n ) led to a significant reduction in the phototactic response to both green and yellow light. Notably, in color preference assays, the\n MpLW<\/jats:italic>\n knockdown alone did not significantly affect the aphids' choice between yellow and green cardboard, whereas the combined knockdown markedly reduced their attraction to both colors.\n <\/jats:p>\n <\/jats:sec>\n \n CONCLUSION<\/jats:title>\n These results demonstrate the differences in phototaxis and color preference regulation mechanisms of peach aphids, revealing that their visual system may employ refined and differentiated molecular strategies in response to different light stimuli. Our findings provide a novel perspective for developing pest management strategies based on insect vision. \u00a9 2026 Society of Chemical Industry.<\/jats:p>\n <\/jats:sec>","DOI":"10.1002\/ps.71240","type":"journal-article","created":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T04:46:11Z","timestamp":1787287571000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The role of opsin genes in mediating phototaxis and color preference in the green peach aphid,\n Myzus persicae<\/i>\n (\n Sulzer<\/scp>\n )"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3664-4134","authenticated-orcid":false,"given":"Xue","family":"Tang","sequence":"first","affiliation":[{"name":"Institute of Entomology College of Agriculture, Guizhou University Guiyang China"},{"name":"Guizhou Key Laboratory of Agricultural Biosecurity Guizhou University Guiyang 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