Intraspecific Variation in Commiphora wightii Populations Based on Internal Transcribed Spacer (ITS1-5.8S-ITS2) Sequences of rDNA

Diversity

Inamul Haque¹  Rajib Bandopadhyay¹ 

[1] Department of Biotechnology, Birla Institute of Technology, Mesra-835215, Ranchi, Jharkhand, India;

关键词: internal transcribed spacer;    rDNA;    genetic diversity;    guggul;    endangered;    endemic;   

DOI  :  10.3390/d1020089

来源: mdpi

【 摘 要 】

Commiphora wightii is an endangered, endemic species found in the Thar Desert of Rajasthan, India and adjoining areas of Pakistan. The populations of this plant are rapidly dwindling due to overexploitation for their medicinally important resin. Analysis of nucleotide sequences of the internal transcribed spacer of rDNAs revealed low genetic diversity (π = 0.03905; θ_w = 0.05418) and high population structure (Φ_ST = 0.206). Parsimony based assessment and Bayesian analyses were conducted on the dataset. Mantel’s test showed a statistically significant positive correlation between genetic and geographic distance (r² = 0.3647; p = 0.023). Anthropogenic overexploitation of C. wightii for its natural resources has resulted in population fragmentation. Initiatives should be taken immediately to preserve the diversity of this important plant species.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.