Transgenerational inheritance of cold temperature response in Drosophila

Area of Science:

• Environmental epigenetics
• Microbiome research
• Drosophila melanogaster model

Background:

• Low temperature rearing in Drosophila induces intergenerational inheritance of transcriptional responses.
• The role of the microbiome in mediating these transgenerational effects is suggested but not fully elucidated.

Purpose of the Study:

• To investigate the contribution of the acquired microbiome to cold-induced transcriptional responses in Drosophila offspring.
• To explore the role of cold exposure in regulating triglyceride levels across generations.

Main Methods:

• Analysis of gene expression data from cold-reared Drosophila.
• Comparison of transcriptomic data between flies with and without a microbiota (axenic).
• Bioinformatic analysis integrating diet- and metabolism-related transcriptome data.

Main Results:

• The acquired microbiome contributes to the offspring phenotype following cold exposure.
• Cold exposure regulates triglyceride levels both within and across generations (inter- and trans-generationally).

Conclusions:

• The microbiome plays a significant role in mediating transgenerational inheritance of environmental effects.
• Cold-induced metabolic changes, specifically triglyceride levels, are heritable and influenced by the microbiome.