The genes expression difference between winged and wingless bird cherry-oat aphid Rhopalosiphum padi based on...

Area of Science:

• Entomology
• Developmental Biology
• Genetics

Background:

• Aphids exhibit wing polyphenism, producing winged and wingless forms influenced by environmental cues.
• This polyphenism is vital for aphid migration and host alternation strategies.
• The molecular mechanisms governing aphid wing development remain largely unelucidated.

Purpose of the Study:

• To investigate the molecular mechanisms underlying wing polyphenism in the bird cherry-oat aphid, Rhopalosiphum padi.
• To conduct a comparative transcriptional analysis across all developmental stages using RNA-Seq.
• To identify candidate genes involved in aphid wing development.

Main Methods:

• RNA-Sequencing (RNA-Seq) was employed for comprehensive transcriptional analysis.
• Comparative analysis of gene expression across different developmental stages of Rhopalosiphum padi.
• Identification of differentially expressed genes potentially regulating wing development.

Main Results:

• Several candidate genes associated with biogenic amines and hormones were identified as potentially involved in wing development.
• The third instar larval stage was identified as a critical period for the expression of alternative morphs.
• Thirty-three genes related to wing development showed significant expression changes across developmental stages, including Wnt2, Hh, and Dpp.

Conclusions:

• The study provides the first comprehensive report on wing development in Rhopalosiphum padi using RNA-Seq.
• Candidate genes involved in hormonal and signaling pathways are implicated in regulating aphid wing polyphenism.
• Understanding these molecular mechanisms offers insights into aphid adaptation and pest management strategies.