Journal
BIOCHEMICAL SYSTEMATICS AND ECOLOGY
Volume 64, Issue -, Pages 89-96Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bse.2015.11.016
Keywords
Pinus bungeana; Nucleotide polymorphism; Population genetic structure; Phylogeography
Funding
- National Natural Science Foundation of China [41101058]
- Research Fund for the Doctoral Program of Higher Education [20126101120021]
Ask authors/readers for more resources
Pinus bungeana Zucc. ex Endl. (Pinaceae), is an endangered conifer tree species and is endemic to western central China. In this study, we detected the nucleotide polymorphism and phylogeographic history of P. bungeana based on three nuclear genes. We collected 16 natural populations and covered the entire distributional ranges of P. bungeana. We found that this endangered species have extremely low level of nucleotide diversity (pi(t) = 0.00098, pi(sil) = 0.00229) compared with that of other conifers. Meanwhile, hierarchical AMOVA revealed that genetic variations of two nuclear loci (010054_01 and 0_12329_02) mainly occurred among populations (54% and 55%), and another locus (0_14221_01) existed within populations (64%). This finding may be caused by random fixation of nuclear genes. Neutrality tests and mismatch analysis suggested that P. bungeana may have experienced the recent range expansion. In addition, high genetic diversity and unique haplotypes were identified in the west areas of Qinling-Daba and Lvliang Mountains, and these areas may be the glacial refuges of P. bungeana. After the glaciation, the species expanded or migrated outward from these refuges, and the founder effect or bottleneck effect in this process may have resulted in the low level of nucleotide polymorphism of P. bungeana. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available