Higher substitution rates and lower dN/dS for the plastid genes in Gnetales than other gymnosperms
文献类型：期刊论文
| 作者 | Jiang, Bin; Wang, Bo; Su, Yingjuan; Wang, Ting; Zhou, Yuan |
| 刊名 | BIOCHEMICAL SYSTEMATICS AND ECOLOGY
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| 出版日期 | 2015 |
| 英文摘要 | Previous studies have shown that Gnetales exhibit an increase in the rates of substitution in plastid genes. However, the relative roles of selection and drift in driving the observed increase in substitution rate remain unclear. Here we estimated the nonsynonymous (dN) and synonymous (dS) substitution rates and the dN/dS ratios for 59 plastid protein-coding genes conserved across Gnetales and other gymnosperms with maximum likelihood methods. Our results show that: (1) values of dN and dS for 48 and 50 genes, respectively, are significantly higher in Gnetales relative to the other sampled gymnosperms; (2) the acceleration of dN is of lower magnitude than that of dS; (3) dN/dS is significantly reduced for 22 of the 59 plastid genes in Gnetales; and (4) dN/dS is extremely heterogeneous among the Gnetalean genes, varying by up to a factor of 40. We propose that while biological characteristics such as generation time and plant height may contribute to the rate increase in Gnetales, the special habitats that they occupy are linked to the gene-specific reduction of dN/dS. (C) 2015 Elsevier Ltd. All rights reserved. |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/282]  |
| 专题 | 中国科学院武汉植物园 |
| 推荐引用方式 GB/T 7714 | Jiang, Bin,Wang, Bo,Su, Yingjuan,et al. Higher substitution rates and lower dN/dS for the plastid genes in Gnetales than other gymnosperms[J]. BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2015. |
| APA | Jiang, Bin,Wang, Bo,Su, Yingjuan,Wang, Ting,&Zhou, Yuan.(2015).Higher substitution rates and lower dN/dS for the plastid genes in Gnetales than other gymnosperms.BIOCHEMICAL SYSTEMATICS AND ECOLOGY. |
| MLA | Jiang, Bin,et al."Higher substitution rates and lower dN/dS for the plastid genes in Gnetales than other gymnosperms".BIOCHEMICAL SYSTEMATICS AND ECOLOGY (2015). |
入库方式： OAI收割
来源：武汉植物园
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