Plant DNA Barcoding
A modern, molecular technique using specific gene regions to accurately identify plant species, especially when morphological identification is difficult.
Introduction
Plant DNA Barcoding is a modern, molecular technique that uses specific gene regions to accurately identify plant species. It is especially valuable when traditional morphological identification is difficult or impossible — such as with seedlings, plant fragments, dried herbarium specimens, or processed materials like herbal powders and extracts.
At Yaazh Xenomics, we provide comprehensive Plant DNA Barcoding Services using the globally recommended markers — rbcL, matK, and ITS. Our services support researchers, herbal product manufacturers, regulatory bodies, conservation projects, and the pharmaceutical industry across India.
Our Plant DNA Barcoding Services
1. DNA extraction from various plant materials.
2. PCR amplification using validated primers.
3. Sanger sequencing (bidirectional).
4. Sequence analysis and database matching (BOLD + NCBI).
5. Detailed identification reports with phylogenetic support.
DNA Barcoding for Herbal & Medicinal Plant Authentication
Overview
We specialize in authenticating medicinal plants and herbal products using DNA barcoding. This service helps manufacturers, exporters, and regulators ensure product quality and prevent adulteration. We typically use a combination of rbcL + matK + ITS2 for maximum accuracy in herbal authentication projects.
Applications
- Authentication of raw herbs and finished formulations
- Detection of substitution or adulteration in Ayurvedic, Siddha, and Unani medicines
- Quality control of nutraceuticals and dietary supplements
- Regulatory compliance and export documentation
Our Main Service Offerings
Core markers used for plant identification.
rbcL Gene Sequencing
The rbcL gene is the most universal chloroplast marker used in plant barcoding. • Full gene size: ≈ 1,428 bp • Standard barcode region: ≈ 600 bp • Advantages: Extremely high amplification success rate (>95%), excellent for family and genus-level identification, works well on degraded DNA, reliable first-line marker.
matK Gene Sequencing
The matK gene offers higher species-level resolution than rbcL. • Full gene size: ≈ 1,500–1,600 bp • Standard barcode region: ≈ 800–900 bp • Advantages: Superior discriminatory power at species level, faster evolutionary rate than rbcL, ideal for resolving closely related species. Note: requires optimized protocols for some plant groups.
ITS Gene Sequencing
The nuclear ITS region provides excellent resolution for species-level identification. • Recommended Approach: ITS2 only (300–500 bp) or Full ITS (600–800 bp). • Advantages: High interspecific variability, biparental inheritance (detects hybrids), strong performance when combined with chloroplast markers. ITS2 offers high amplification success.
Comparison: rbcL vs matK vs ITS for Plant Identification
Recommendation: For most plant identification projects, we recommend using rbcL + matK as the core barcode and adding ITS2 when higher species resolution is required.
| Parameter | rbcL | matK | ITS (ITS2) | Best Choice |
|---|---|---|---|---|
| Amplification Success | Very High | Moderate to High | High | rbcL |
| Species-Level Resolution | Moderate | High | Very High | ITS / matK |
| Performance on Degraded DNA | Excellent | Good | Excellent | rbcL / ITS2 |
| Paralog Issues | Rare | Rare | Occasional | rbcL / matK |
| Universality | Highest | High | Good | rbcL |
| Cost & Ease of Use | Lowest | Medium | Medium | rbcL |
| Recommended Use | First-line screening | Species resolution | Closely related species & hybrids | Combination |
DNA Barcoding vs Traditional Morphological Identification
DNA Barcoding provides objective, reproducible results regardless of plant life stage or preservation method.
| Feature | Traditional Morphological Identification | Plant DNA Barcoding | Winner |
|---|---|---|---|
| Accuracy | Depends on expert taxonomist | High and objective | DNA Barcoding |
| Speed | Slow (especially for complex groups) | Fast (5–7 days) | DNA Barcoding |
| Works on Fragments/Seedlings | Often impossible | Highly effective | DNA Barcoding |
| Works on Processed Materials | Not possible | Possible | DNA Barcoding |
| Cost | Low (if expert available) | Moderate | Morphology |
| Reproducibility | Variable | High | DNA Barcoding |
| Detects Adulteration | Difficult | Highly effective | DNA Barcoding |
| Requires Expert Taxonomist | Yes | No | DNA Barcoding |
Why Choose Yaazh Xenomics?
- • Validated primers and optimized protocols for Indian plant species
- • High success rate even with challenging samples
- • Detailed reports with database matching and phylogenetic support
- • Competitive pricing and fast turnaround
- • Experienced team with strong background in plant genomics
Ready to authenticate your plant samples?
Contact Us: Reach out to our genomics team today for sample submission guidelines, pricing, and project discussion.