Skip to Main Content
Chloroplast phylogeography of Helianthemum songaricum (Cistaceae) from northwestern China: implications for preservation of genetic diversityAuthor(s): Zhihao Su; Mingli Zhang; Stewart C. Sanderson
Source: Conservation Genetics. doi: 10.1007/s10592-011-0250-9.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
View PDF (475.57 KB)
DescriptionTwo chloroplast intergenic spacers (trnD-trnT and rps16-trnK) were used to study the phylogeographical structure of Helianthemum songaricum in northwestern China, with 12 haplotypes detected. Phylogenetic analysis showed that H. songaricum comprised two lineages, one distributed in the Yili Valley and the other in the western Ordos Plateau. Nested clade phylogeographic analysis likewise indicated that haplotypes in the Yili Valley and those in the western Ordos Plateau formed sister monophyletic clades. This lineage split was also supported by AMOVA analysis and the Mantel test. AMOVA showed that 99.41% of variance in H. songaricum occurred between the two distribution regions, and correlation between genetic differentiation and geographical distances was significant (r2 = 0.877, P\0.0001). All populations in the Yili Valley shared haplotype A with high frequency, and range expansion was detected by nested clade analysis and strongly supported by negative Fu's FS-values, Tajima's D-values, and mismatch distribution analysis. We speculate that aggravation of the dry and cold climate during the early Quaternary, combined with plant physiological features, were determining factors contributing to the lineage split, and climate oscillations most likely led to the Yili range expansion. The high drift load (FST = 0.9923, GST = 0.663) and inbreeding load (HS = 0.219) of H. songaricum indicate a significant extinction risk, and protective measures should be taken immediately.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
CitationSu, Zhihao; Zhang, Mingli; Sanderson, Stewart C. 2011. Chloroplast phylogeography of Helianthemum songaricum (Cistaceae) from northwestern China: implications for preservation of genetic diversity. Conservation Genetics. doi: 10.1007/s10592-011-0250-9.
Keywordschloroplast DNA, Helianthemum, phylogeography, Yili Valley, western Ordos Plateau
- Divergent population genetic structure of the endangered Helianthemum (Cistaceae) and its implication to conservation in northwestern China
- Phylogeography of the bark beetle Dendroctonus mexicanus Hopkins (Coleoptera: Curculionidae: Scolytinae)
- Phylogeography of the rare Gymnocarpos przewalskii (Caryophyllaceae): indications of multiple glacial refugia in north-western China
XML: View XML