New Research on Entomology Reveals Unreliability of RNA-Dependent Sequencing in Insect-Microbe Symbiosis

Researchers at Qilu University of Technology (Shandong Academy of Sciences) have made a significant discovery in the field of entomology. The study, published in the journal Insects, found that RNA-dependent sequence methods are not reliable for evaluating alive microbiota diversity in insect-microbe symbiosis. This discovery has major implications for understanding the diversity of associated bacteria in insect-microbe symbiosis.

Key Takeaways:

• The study used both DNA-dependent and RNA-dependent 16S rRNA amplicon sequencing to assess larval gut bacteria diversity of *Delia antiqua*, a major pest of Liliaceae crops.
• Results revealed significant differences in bacterial community between DNA- and RNA-dependent sequence samples.
• The study found that DNA-dependent methods were superior for assessing symbiotic microbiota in *Delia antiqua*, as they exhibited inhibition effects on larvae survival and body weight compared to RNA-dependent methods.
• The research provides insights into microbial diversity detection in *Delia antiqua* and offers a framework for other insect-microbe studies.
• Financial supporters for this research include National Natural Science Foundation of China and Young Innovation Team Project of Higher Education in Shandong Province.
• Authors of the study include Miaomiao Li, Xin Cao, Linfeng Xu, Luyao Lin, Xiaoqing Wu, Susu Fan, Xinjian Zhang, and Fangyuan Zhou.

Statistics:

• 16S rRNA amplicon sequencing methods were used to assess larval gut bacteria diversity.
• The study investigated larval gut bacteria diversity of *Delia antiqua*, a major pest of Liliaceae crops.
• The reliability of DNA-dependent and RNA-dependent sequencing methods was evaluated using synthetic communities and bacterial communities from wild larvae.
• DNA-dependent Synopsis constructed based on RNA-dependent sequencing exhibited inhibition effects on *D. antiqua* larvae survival and body weight.
• The study found that DNA-dependent methods were superior for assessing symbiotic microbiota in *Delia antiqua*.

Sources:

• Laboratory Test Indirectly Reveals the Unreliability of RNA-Dependent 16S rRNA Amplicon Sequences in Detecting the Gut Bacterial Diversity of *Delia antiqua* . Insects, 2025,16(6):611.
• Insects: www.mdpi.com/journal/insects/