Milletomics: a metabolomics centered integrated omics approach toward genetic progression

Area of Science:

• Agricultural Science
• Plant Biology
• Genetics

Background:

• Millet production is crucial for feeding a growing global population by 2050.
• Millet's climate resilience and nutritional value make it a vital alternative staple food.
• Improving millet's genetic variation is essential to meet increasing demand and enhance agronomic value.

Purpose of the Study:

• To explore the application of integrative omics technologies for millet genetic improvement.
• To identify and develop millets with desirable phenotypes for enhanced agronomic sustainability.
• To leverage omics approaches for breeding climate-resilient and nutritionally superior millets.

Main Methods:

• Transcriptomics, proteomics, and metabolomics were used to identify stress tolerance mechanisms.
• Metabolomics integrated with other omics facilitated metabolome engineering and trait-specific metabolite creation.
• Whole-genome sequencing (WGS) and genotyping by sequencing (GBS) enabled identification of stress-induced genes and advanced breeding.

Main Results:

• Transcriptomics enhanced millet's salinity and drought tolerance.
• Proteomics identified key proteins associated with salt and drought tolerance in various millet species.
• Metabolomics revealed critical pathways for drought tolerance and bioactive chemical synthesis, with potential for ionomics integration.

Conclusions:

• Integrative omics technologies are powerful tools for understanding and improving millet genetics.
• Next-generation sequencing and marker-assisted breeding accelerate the development of climate-resilient millets.
• Further research integrating metabolomics and ionomics can enhance millet's nutritional value and stress tolerance.