Extent and complexity of RNA processing in honey bee queen and worker caste development
Xu Jiang He1,2, Andrew B Barron3, Liu Yang4
1Honeybee Research Institute, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, P. R. of China.
Iscience
|May 16, 2022
Summary
Honey bee (Apis mellifera) caste development involves thousands of differentially expressed transcript isoforms (DEIs) regulated by RNA splicing and poly(A) tails, revealing complex gene expression dynamics.
Area of Science:
- Genomics
- Developmental Biology
- Insect Molecular Biology
Background:
- Honey bee (Apis mellifera) castes offer a model for studying phenotypic plasticity.
- Understanding caste-specific gene expression is crucial for uncovering developmental mechanisms.
Purpose of the Study:
- To compare mRNA transcripts between honey bee queen and worker larvae using direct RNA sequencing.
- To investigate the role of alternative splicing and poly(A) tails in caste differentiation.
Main Methods:
- Nanopore-based direct RNA sequencing with long reads.
- Analysis of thousands of significantly differentially expressed transcript isoforms (DEIs).
- Investigation of poly(A) tail regulation on DEI expression.
Main Results:
- Thousands of DEIs were identified between queen and worker larvae, shaped by flexible splicing.
- Poly(A) tails negatively regulated DEI expression, influencing caste differentiation.
- Hundreds of unique isoforms were found in each caste, with dynamic expression patterns during development.
Conclusions:
- RNA processing and transcript expression exhibit significant complexity in honey bee caste determination.
- Alternative splicing and poly(A) tail dynamics are key mechanisms underlying honey bee phenotypic plasticity.
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