Youhong Peng, Ke Chen. (2011). Phylogeographic pattern of Populus cathayana in the southeast of Qinghai-Tibetan Plateau of China revealed by cpSSR markers. Silva Fennica vol. 45 no. 4 article id 94. https://doi.org/10.14214/sf.94

Keywords: genetic differentiation; refugia; phylogeography

Abstract | View details | Full text in PDF | Author Info

The vegetation in the Qinghai-Tibetan Plateau is thought to be highly sensitive and more vulnerable to global climate change than that of other areas. The uplift of the plateau as well as the climatic oscillations during glacial periods had a profound impact on plant species distribution and genetic diversity there. In the present study, seven pairs of cpSSR (chloroplast Simple Sequence Repeat) primers were utilized to detect genetic varieties of Populus cathayana Rehd populations from their natural range in the southeastern areas of Qinghai-Tibetan Plateau. A total of 28 alleles and 12 different haplotypes were detected. The proportion of haplotype variation among populations (G_ST = 0.794, N_ST = 0.900) indicated high level of genetic differentiation among populations and a significant phylogeographic structure (N_ST > G_ST, P < 0.05). This appears to support the hypothesis that these populations were derived from multiple refugia areas during the Quaternary climatic oscillations. Based on the haplotype network and mismatch distribution analyses, we found no evidence of postglacial range recolonization and expansion by P. cathayana in this region. This might be mainly due to the complex topography of the southeastern part of the Qinghai-Tibetan Plateau. The lofty mountain ranges and deep valleys in this region might have prevented long-distance migrations of this species during the climatic amelioration.

Peng, Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, China E-mail: pengyh@cib.ac.cn
Chen, Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, China E-mail: kc@nn.cn

Click this link to register to Silva Fennica.

If you are a registered user, log in to save your selected articles for later access.

Contents alert

Your selected articles
Send to email

Kangas A., (1991) Updated measurement data as prior information in.. Silva Fennica vol. 25 no. 3 article id 5453 (remove) | Edit comment

Pärnänen A., (1979) Ecological effects of different land uses and ma.. Silva Fennica vol. 13 no. 2 article id 5023 (remove) | Edit comment

Mikola P., (1979) Environmental content of forestry education in E.. Silva Fennica vol. 13 no. 3 article id 5037 (remove) | Edit comment

Saarnijoki S., (1942) Distribution of European white elm in flooded sh.. Silva Fennica vol. no. 58 article id 4578 (remove) | Edit comment

Chianucci F., (2015) A note on estimating canopy cover from digital c.. Silva Fennica vol. 50 no. 1 article id 1518 (remove) | Edit comment

Donis J., Kitenberga M. et al. (2018) Factors affecting windstorm damage at the stand .. Silva Fennica vol. 52 no. 4 article id 10009 (remove) | Edit comment

Kuusela K., (1979) Forest balance on the national level. Silva Fennica vol. 13 no. 3 article id 5044 (remove) | Edit comment

Follow @SilvaFennica