Abstract
In recent years, ambrosia beetles, Euwallacea interjectus, have emerged as important pests of exotic Populus in poplar cultivations from Jiangsu, China. However, Fusarium mutualists of E. interjectus within the Ambrosia Fusarium Clade (AFC) remain unclear. In the investigation of Fusarium mutualists, 36 isolates were obtained from five geographically separated sites in Jiangsu Province and Jiangxi Province. Three novel species of AFC were identified based on morphological and multi-gene phylogenetic analysis; three novel species of AFC were identified. These new species are described here as Fusarium gannanense (AF-25), Fusarium populicola (AF-26), and Fusarium tumidispermus (AF-27). Fusarium populicola may be a pathogen of poplar and exhibited common to poplar cultivations in Jiangsu Province. The other two species were recovered from three locations in Jiangxi Province. The distribution of mutualists of E. interjectus within AFC is associated with the geographical distance among the samples with samples from the same region sharing the same mutualist. The present study augments our knowledge on the mutualists of Euwallacea within AFC in the native geographic range.
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15 September 2022
A Correction to this paper has been published: https://doi.org/10.1007/s11557-022-01839-4
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Acknowledgements
The authors sincerely thank Dinggen Ji and Jinhua Yang for the assistance on collection of the study samples and Nan Jiang, Fan He, and Zichun Li for the assistance on experiment of the laboratory studies. Special thanks to Jiao He and Lichao Wang for their help on phenotypic characterization of the new species. Special thanks to Professor Changlu Wang (Department of Entomology, Rutgers University) for revising the text.
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This work was supported by the Forestry Science, Technology Innovation and Promotion Projects of Jiangsu (LYKJ-Dongtai [2021] no.1) and the Forest Development Special Planning Projects of Jiangsu.
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All authors contributed to the study conception and design. Material preparation, sampling, collecting, DNA isolation, and preparation for sequencing were performed by Shengchang Lai and Chen Zhao. Data analyses and interpretation were performed by Shengchang Lai and Lulu Dai. You Li supported scientific guidance for studies and writing. The first draft of the manuscript was written by Shengchang Lai, and all authors commented on previous versions of the manuscript. All authors read, edited, and approved the final manuscript. Dejun Hao and Lulu Dai supervised the study and reviewed the manuscript.
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Lai, S., Zhao, C., Li, Y. et al. Three novel Fusarium mutualists of ambrosia beetle Euwallacea interjectus in China. Mycol Progress 21, 70 (2022). https://doi.org/10.1007/s11557-022-01820-1
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DOI: https://doi.org/10.1007/s11557-022-01820-1