Phylogenetic relationships and divergence times of the family Araucariaceae based on the DNA sequences of eight genes

NWIPB OpenIR

	Phylogenetic relationships and divergence times of the family Araucariaceae based on the DNA sequences of eight genes
	Liu Nian ; Zhu Yong ; Wei ZongXian ; Chen Jie ; Wang QingBiao ; Jian ShuGuang ; Zhou DangWei ; Shi Jing ; Yang Yong ; Zhong Yang
	2009-08-01
发表期刊	CHINESE SCIENCE BULLETIN ; Liu, N; Zhu, Y; Wei, ZX; Chen, J; Wang, QB; Jian, SG; Zhou, DW; Shi, J; Yang, Y; Zhong, Y.Phylogenetic relationships and divergence times of the family Araucariaceae based on the DNA sequences of eight genes,CHINESE SCIENCE BULLETIN,2009,54(15):2648-2655
摘要	Araucariaceae is one of the most primitive families of the living conifers, and its phylogenetic relationships and divergence times are critically important issues. The DNA sequences of 8 genes, i.e., nuclear ribosomal 18S and 26S rRNA, chloroplast 16S rRNA, rbcL, matK and rps4, and mitochondrial coxI and atp1, obtained from this study and GenBank were used for constructing the molecular phylogenetic trees of Araucariaceae, indicating that the phylogenetic relationships among the three genera of this family should be ((Wollemia, Agathis), Araucaria). On the basis of the fossil calibrations of Wollemia and the two tribes Araucaria and Eutacta of the genus Araucaria, the divergence time of Araucariaceae was estimated to be (308 +/- 53) million years ago, that is, the origin of the family was in the Late Carboniferous rather than Triassic as a traditional view. With the same gene combination, the divergence times of the genera Araucaria and Agathis were (246 +/- 47) and (61 +/- 15) Ma, respectively. Statistical analyses on the phylogenetic trees generated by using different genes and comparisons of the divergence times estimated by using those genes suggested that the chloroplast matK and rps4 genes are most suitable for investigating the phylogenetic relationships and divergence times of the family Araucariaceae.; Araucariaceae is one of the most primitive families of the living conifers, and its phylogenetic relationships and divergence times are critically important issues. The DNA sequences of 8 genes, i.e., nuclear ribosomal 18S and 26S rRNA, chloroplast 16S rRNA, rbcL, matK and rps4, and mitochondrial coxI and atp1, obtained from this study and GenBank were used for constructing the molecular phylogenetic trees of Araucariaceae, indicating that the phylogenetic relationships among the three genera of this family should be ((Wollemia, Agathis), Araucaria). On the basis of the fossil calibrations of Wollemia and the two tribes Araucaria and Eutacta of the genus Araucaria, the divergence time of Araucariaceae was estimated to be (308 +/- 53) million years ago, that is, the origin of the family was in the Late Carboniferous rather than Triassic as a traditional view. With the same gene combination, the divergence times of the genera Araucaria and Agathis were (246 +/- 47) and (61 +/- 15) Ma, respectively. Statistical analyses on the phylogenetic trees generated by using different genes and comparisons of the divergence times estimated by using those genes suggested that the chloroplast matK and rps4 genes are most suitable for investigating the phylogenetic relationships and divergence times of the family Araucariaceae.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/46060
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Liu Nian,Zhu Yong,Wei ZongXian,et al. Phylogenetic relationships and divergence times of the family Araucariaceae based on the DNA sequences of eight genes[J]. CHINESE SCIENCE BULLETIN, Liu, N; Zhu, Y; Wei, ZX; Chen, J; Wang, QB; Jian, SG; Zhou, DW; Shi, J; Yang, Y; Zhong, Y.Phylogenetic relationships and divergence times of the family Araucariaceae based on the DNA sequences of eight genes,CHINESE SCIENCE BULLETIN,2009,54(15):2648-2655,2009.
APA	Liu Nian.,Zhu Yong.,Wei ZongXian.,Chen Jie.,Wang QingBiao.,...&Zhong Yang.(2009).Phylogenetic relationships and divergence times of the family Araucariaceae based on the DNA sequences of eight genes.CHINESE SCIENCE BULLETIN.
MLA	Liu Nian,et al."Phylogenetic relationships and divergence times of the family Araucariaceae based on the DNA sequences of eight genes".CHINESE SCIENCE BULLETIN (2009).