Identification of genes regulated by 20-Hydroxyecdysone in Macrobrachium nipponense using comparative transcriptomic...

Area of Science:

• Crustacean biology
• Molecular endocrinology
• Aquaculture science

Background:

• Macrobrachium nipponense is an economically important freshwater prawn in China.
• Reproductive molt is critical for aquaculture efficiency.
• 20-hydroxyecdysone (20E) is known to control crustacean molting and oviposition, but its molecular mechanisms in M. nipponense are not well understood.

Purpose of the Study:

• To investigate the molecular mechanisms of reproductive molt in M. nipponense.
• To elucidate the role of 20-hydroxyecdysone (20E) in regulating the molting process.
• To establish the first transcriptome library for M. nipponense in response to 20E.

Main Methods:

• Transcriptome sequencing of 18 tissue samples from M. nipponense.
• Identification and screening of differentially expressed genes (DEGs) in response to 20E.
• Validation of RNA sequencing data using Quantitative Real-Time PCR.

Main Results:

• Over 240 Gb of transcriptome data was generated.
• 2532 differentially expressed genes (DEGs) were identified.
• Eighty-seven DEGs related to molt or 20E were identified, with eight strong candidate genes showing significant expression variations during molting stages.

Conclusions:

• This study presents the first transcriptome library for M. nipponense tissues in response to 20E.
• 20E plays a dominant role in the molting process of M. nipponense.
• Numerous 20E-regulated DEGs were discovered, providing a foundation for understanding its molecular regulatory mechanisms.