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Development of a novel nuclear DNA marker to identify biotypes A and B of the stone leek leafminer, Liriomyza chinensis (Diptera: Agromyzidae)

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Abstract

The stone leek leafminer Liriomyza chinensis (Kato, 1949) (Diptera: Agromyzidae) is a serious insect pest that invades the Japanese bunching onion (JSAEZ (ed.) 2006). A novel population of L. chinensis, here termed biotype B, has been repeatedly detected in many prefectures in Japan since 2016, which showed larval mine forms different from those of the native L. chinensis populations (biotype A). Though a previous study examined a portion of the mitochondrial cytochrome c oxidase I (mtCOI) sequences of these biotypes and revealed that there is DNA polymorphism between biotypes A and B, their nuclear DNA has not been examined; therefore, hybrid individuals have not been detected. To identify the biotypes of L. chinensis collected around Japan with precision, a novel nuclear DNA marker was established. Moreover, to reveal their phylogenetic relationships, phylogenetic analyses were conducted by comparing the biotype mtCOI and D2 region sequences of the 28S rDNA, which represent useful indexes of phylogenetic differentiation. Based on these analyses, the monophyly of L. chinensis was strongly supported (100% bootstrap support). The nuclear and mitochondrial DNA markers facilitated gathering maternal mitochondrial information and distinguishing hybrid individuals. This approach may help elucidate reproductive interference, which may cause the replacement of biotype A with biotype B.

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Acknowledgements

We thank Prof. Dr. N. Hinomoto, Dr. S. Tokumaru, Mr. A. Iwasaki and Dr. S. Toyoshima for the useful discussions. We also thank Ms. M. Kikuchi, Ms. K. Shirotsuka, Mr. J. Yase, Mr. Y. Nakanishi, Ms. Y. Aoki, Mr. M. Doi, Ms. R. Ogino, Mr. Y. Takahashi, Mr. H. Fukuda, Dr. A. Nagasaka, Mr. M. Kaneko, Ms. T. Fujita, Mr. T. Tsukamoto, Mr. S. Yamaguchi, Mr. T. Mizuno, Mr. H. Yokoyama, Dr. K. Shimizu, Mr. R. Iwase, Ms. I. Fujita, and Ms. C. Asano for the collecting of flies. We also thank Editage (www.editage.com) for English language editing.

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Correspondence to Satoshi Fujito.

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13355_2022_790_MOESM2_ESM.docx

Supplementary file2 Fig. S1 Two types of damage caused on Japanese bunching onion by Liriomyza chinensis larvae a discontinuous mine forms generated by several biotype A larvae, which rarely cause severe economic damage; b continuous mine forms generated by dozens of biotype B larvae, which cause the entire leaf to turn white. Fig. S2 Alignment of mtCOI of Liriomyza chinensis haplotype A, B1, and B2 Restriction site of PvuI indicated; ‘MG252777’ indicates the sequence of a Chinese population of L. chinensis collected in Laiwu, Shangdong (Chen et al. 2018). mtCOI is a region of the mitochondrial DNA (The mitochondrial gene, cytochrome oxidase I). Fig. S3 Bunching onion leaves oviposited by Liriomyza chinensis biotypes A and B Arrows indicate positions of eggs. a Biotype A females oviposit inside the unifacial leaf of Japanese bunching onions; thus, eggs are observed by opening the leaf lengthwise with an insect pin; b biotype B females oviposit immediately under the epidermis and lengthwise intensively. (DOCX 3562 KB)

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Urairi, C., Uesugi, R. & Fujito, S. Development of a novel nuclear DNA marker to identify biotypes A and B of the stone leek leafminer, Liriomyza chinensis (Diptera: Agromyzidae). Appl Entomol Zool 57, 313–322 (2022). https://doi.org/10.1007/s13355-022-00790-w

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  • DOI: https://doi.org/10.1007/s13355-022-00790-w

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