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Profiling Genetic Variation: Divergence Patterns and Population Structure of Thailand's Endangered Celastrus
Kornchanok Kaenkham1,2, Warayutt Pilap2,3, Weerachai Saijuntha3,4
1Graduate School, Mahasarakham University, Maha Sarakham 44150, Thailand.
Biology
|June 26, 2025
Summary
Genetic diversity in the endangered medicinal plant Celastrus paniculatus was assessed. Conservation efforts should prioritize genetically diverse and distinct populations to preserve evolutionary potential.
Area of Science:
- Botany
- Conservation Genetics
- Molecular Ecology
Background:
- Celastrus paniculatus is an endangered medicinal plant facing threats.
- Understanding its genetic diversity is crucial for effective conservation.
Purpose of the Study:
- To examine the genetic diversity and population structure of Celastrus paniculatus.
- To provide molecular data for evidence-based conservation strategies.
Main Methods:
- Analysis of nuclear internal transcribed spacer (ITS) and rbcL markers.
- Sequencing of 62 samples from seven natural populations in Thailand.
- Haplotype network construction, genetic distance calculation, and phylogenetic analysis.
Main Results:
- Seventeen haplotypes were identified, with 15 being population-specific.
- CMI population exhibited the highest genetic diversity (Hd = 0.944 ± 0.070).
- PLK population showed distinct genetic divergence; LEI and LPN populations were genetically homogeneous.
Conclusions:
- Genetic structure varies significantly across Celastrus paniculatus populations.
- Conservation should target both diverse (CMI, MKM) and distinct (PLK) populations.
- Molecular data supports evidence-based strategies for conserving this medicinal species.
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