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Obtaining High-Quality Transcriptome Data from Cereal Seeds by a Modified Method for Gene Expression Profiling
Published on: May 21, 2020
Comparative transcriptomic analysis identifies conserved abiotic stress-responsive hub genes in Sorghum bicolor
Renuka Suresh1, Ramanathan Karuppasamy2
1Department of Biotechnology, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, 632014, India.
BMC Plant Biology
|July 6, 2026
Summary
This study identified key genes in sorghum (Sorghum bicolor) that help it withstand environmental stress. These findings offer genetic targets for developing more resilient, climate-adapted sorghum varieties.
Area of Science:
- Plant Science
- Genomics
- Molecular Biology
Background:
- Sorghum bicolor is a vital cereal crop known for its climate resilience.
- Understanding its molecular responses to abiotic stress is crucial for enhancing crop adaptability in a changing climate.
- Integrative transcriptomic analysis of public data aids in identifying conserved stress-responsive genes and networks.
Purpose of the Study:
- To identify conserved genes and molecular networks involved in sorghum's abiotic stress response.
- To pinpoint potential genetic targets for improving sorghum's stress tolerance.
Main Methods:
- Comparative transcriptomic analysis integrating microarray (GSE48205) and RNA-seq (GSE140928) datasets.
- Differential gene expression analysis to identify overlapping differentially expressed genes (DEGs).
- Protein-protein interaction network construction and topology analysis (MCODE, CytoHubba) to identify hub genes.
Main Results:
- Identified 1,097 overlapping DEGs between datasets.
- Discovered four candidate hub genes (Sobic.010G233800, Sobic.001G453300, Sobic.001G191000, Sobic.004G231800) with high network centrality.
- Functional enrichment revealed associations with biosynthesis, nitrogen metabolism, ribosome, and organelle pathways, and predicted transcription factor links to stress response.
Conclusions:
- Identified conserved hub genes critical for sorghum's abiotic stress response.
- Provided insights into molecular networks underlying stress adaptation.
- Highlighted potential genetic targets for developing climate-resilient sorghum cultivars, warranting future experimental validation.
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