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- Title
The Diversity of Wolbachia and Other Bacterial Symbionts in Spodoptera frugiperda.
- Authors
Liu, Yuan; Zhang, Lina; Cai, Xiangyun; Rutikanga, Alexandre; Qiu, Baoli; Hou, Youming
- Abstract
Simple Summary: Bacterial symbionts, especially Wolbachia, are vital in many physiological processes of insects. However, the mean infection prevalence of Wolbachia in many species of lepidopteran insects is relatively low. Here, we investigated the infection, composition, abundance, and diversity of bacterial symbionts, especially Wolbachia, associated with Spodoptera frugiperda. Our results revealed that Wolbachia was found in the ovaries and salivary glands of S. frugiperda female adults. Although the infection and abundance of Wolbachia varied between geographical populations, they all belonged to the supergroup B and were named the wFru strain, which has been considered to potentially induce cytoplasmic incompatibility. These findings may provide a foundation for developing potential biocontrol techniques for S. frugiperda. Bacterial symbionts associated with insects can be crucial in insect nutrition, metabolism, immune responses, development, and reproduction. However, the bacterial symbionts of the fall armyworm Spodoptera frugiperda remain unclear. S. frugiperda is an invasive polyphagous pest that severely damages many crops, particularly maize and wheat. Here, we investigated the infection, composition, abundance, and diversity of bacterial symbionts, especially Wolbachia, in different tissues of S. frugiperda female adults. The infection prevalence frequencies of Wolbachia in five provinces of China, namely Pu'er, Yunnan; Nanning, Guangxi; Sanya, Hainan; Yunfu, Guangdong; and Nanping, Fujian, were assessed. The results indicated that Proteobacteria, Firmicutes, and Bacteroidetes were the three most dominant bacterial phyla in S. frugiperda adults. At the genus level, the abundant microbiota, which included Enterobacter and Enterococcus, varied in abundance between tissues of S. frugiperda. Wolbachia was found in the ovaries and salivary glands of S. frugiperda adults, and was present in 33.33% of the Pu'er, Yunnan, 23.33% of the Nanning, Guangxi, and 13.33% of the Sanya, Hainan populations, but Wolbachia was absent in the Yunfu, Guangdong and Nanping, Fujian populations. Further phylogenetic analyses revealed that all of the Wolbachia strains from the different S. frugiperda populations belonged to the supergroup B and were named the wFru strain. Since there were Wolbachia strains inducing cytoplasmic incompatibility in supergroup B, these findings may provide a foundation for developing potential biocontrol techniques against S. frugiperda.
- Subjects
YUNNAN Sheng (China); FALL armyworm; WOLBACHIA; SALIVARY glands; BACTERIAL diversity; ENTEROBACTER; BIOLOGICAL pest control agents
- Publication
Insects (2075-4450), 2024, Vol 15, Issue 4, p217
- ISSN
2075-4450
- Publication type
Article
- DOI
10.3390/insects15040217