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<p>The whitefly <i>Bemisia tabaci</i> is a globally pest complex that significantly impacts agricultural production. This study compares gene expression profiles between two cryptic species within the complex, Asia I and Asia II-1, using RNA sequencing to understand the molecular basis of their ecological divergence. Our analysis identified differentially expressed genes (DEGs) associated with chemosensation, detoxification, reproduction, and stress response, suggesting mechanisms that may contribute to transcriptomic differences between Asia I and Asia II-1 in diverse agricultural environments. Asia II-1 showed higher expression of several odorant-binding protein (OBP) transcripts, suggesting a potential role in host plant perception and adaptation. Additionally, genes related to detoxification, including cytochrome P450s and glutathione S-transferases, were highly expressed in Asia II-1, which may be associated with differences in detoxification capacity between the two cryptic specie. Reproductive genes were also more highly expressed in Asia II-1, suggesting possible differences in reproductive biology between the two cryptic species. Conversely, Asia I showed increased expression of stress-response genes, suggesting adaptive mechanisms to cope with varied environmental conditions. These findings identify candidate genes and pathways that may contribute to ecological differences between Asia I and Asia II-1 and provide a foundation for future functional studies and the development of population-specific pest management strategies. This study advances our understanding of the molecular mechanisms driving <i>B. tabaci</i> invasiveness and highlights opportunities for the development of sustainable, species-specific control approaches.</p>

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RNA-seq analysis reveals differential expression of chemosensory, detoxification, and stress response genes between Bemisia tabaci Asia I and Asia II-1

  • 期刊论文

  • 发表日期：

    2026年7月8日

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  • M. N. Rudra Gouda,
  • G. Prakash,
  • Ramcharan Bhattacharya,
  • S. Subramanian

摘要

The whitefly Bemisia tabaci is a globally pest complex that significantly impacts agricultural production. This study compares gene expression profiles between two cryptic species within the complex, Asia I and Asia II-1, using RNA sequencing to understand the molecular basis of their ecological divergence. Our analysis identified differentially expressed genes (DEGs) associated with chemosensation, detoxification, reproduction, and stress response, suggesting mechanisms that may contribute to transcriptomic differences between Asia I and Asia II-1 in diverse agricultural environments. Asia II-1 showed higher expression of several odorant-binding protein (OBP) transcripts, suggesting a potential role in host plant perception and adaptation. Additionally, genes related to detoxification, including cytochrome P450s and glutathione S-transferases, were highly expressed in Asia II-1, which may be associated with differences in detoxification capacity between the two cryptic specie. Reproductive genes were also more highly expressed in Asia II-1, suggesting possible differences in reproductive biology between the two cryptic species. Conversely, Asia I showed increased expression of stress-response genes, suggesting adaptive mechanisms to cope with varied environmental conditions. These findings identify candidate genes and pathways that may contribute to ecological differences between Asia I and Asia II-1 and provide a foundation for future functional studies and the development of population-specific pest management strategies. This study advances our understanding of the molecular mechanisms driving B. tabaci invasiveness and highlights opportunities for the development of sustainable, species-specific control approaches.