Transcriptomic and metabolomic analyses of root responses in Indigofera stachyodes seedlings under drought stress: a medicinal plant native to karst mountainous regions
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View abstract on PubMed
Summary
This summary is machine-generated.Indigofera stachyodes seedlings resist drought by regulating phenylpropanoid and flavonoid biosynthesis pathways. This study reveals key genes and metabolites involved in drought tolerance for this medicinal plant.
Area Of Science
- Plant Biology
- Molecular Biology
- Biochemistry
Background
- Indigofera stachyodes is a medicinal plant from Guizhou, China, adapted to drought-prone karst regions.
- Drought stress severely impacts I. stachyodes seedling establishment and development.
- Molecular mechanisms of drought tolerance in I. stachyodes are poorly understood.
Purpose Of The Study
- To investigate the molecular mechanisms of drought tolerance in Indigofera stachyodes seedlings.
- To identify key genes and metabolites involved in the plant's response to drought stress.
- To provide a foundation for the domestication of wild I. stachyodes.
Main Methods
- Pot-based water control experiments were used to apply drought stress to I. stachyodes seedlings.
- Transcriptomics (RNA-seq) and metabolomics (LC-MS/GC-MS) were employed to analyze root tissues.
- Integrated analysis of differentially expressed genes (DEGs) and metabolites (DEMs) was performed, including KEGG pathway enrichment and co-expression network construction.
Main Results
- A total of 11,509 DEGs and 622 metabolites were identified across different drought stress levels.
- Transcriptome-metabolome analysis indicated that roots regulate metabolic balance via phenylpropanoid and flavonoid biosynthesis pathways under drought.
- Key metabolites (e.g., p-coumaric acid, coumestrol, vitexin) and genes (e.g., PAL, CHS, DFR) were identified as crucial for drought resistance.
Conclusions
- Indigofera stachyodes seedlings exhibit drought resistance by modulating gene expression and metabolite synthesis in phenylpropanoid and flavonoid pathways.
- The identified molecular players provide insights into the adaptive strategies of I. stachyodes to arid environments.
- This research lays the groundwork for the potential domestication of this valuable medicinal plant.
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