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蕨类植物psbD基因的适应性进化和共进化分析

许可, 王博, 苏应娟, 高磊, 王艇

许可, 王博, 苏应娟, 高磊, 王艇. 蕨类植物psbD基因的适应性进化和共进化分析[J]. 植物科学学报, 2013, 31(5): 429-438. DOI: 10.3724/SP.J.1142.2013.50429
引用本文: 许可, 王博, 苏应娟, 高磊, 王艇. 蕨类植物psbD基因的适应性进化和共进化分析[J]. 植物科学学报, 2013, 31(5): 429-438. DOI: 10.3724/SP.J.1142.2013.50429
XU Ke, WANG Bo, SU Ying-Juan, GAO Lei, WANG Ting. Molecular Evolution of psbD Gene in Ferns:Selection Pressure and Co-evolutionary Analysis[J]. Plant Science Journal, 2013, 31(5): 429-438. DOI: 10.3724/SP.J.1142.2013.50429
Citation: XU Ke, WANG Bo, SU Ying-Juan, GAO Lei, WANG Ting. Molecular Evolution of psbD Gene in Ferns:Selection Pressure and Co-evolutionary Analysis[J]. Plant Science Journal, 2013, 31(5): 429-438. DOI: 10.3724/SP.J.1142.2013.50429
许可, 王博, 苏应娟, 高磊, 王艇. 蕨类植物psbD基因的适应性进化和共进化分析[J]. 植物科学学报, 2013, 31(5): 429-438. CSTR: 32231.14.SP.J.1142.2013.50429
引用本文: 许可, 王博, 苏应娟, 高磊, 王艇. 蕨类植物psbD基因的适应性进化和共进化分析[J]. 植物科学学报, 2013, 31(5): 429-438. CSTR: 32231.14.SP.J.1142.2013.50429
XU Ke, WANG Bo, SU Ying-Juan, GAO Lei, WANG Ting. Molecular Evolution of psbD Gene in Ferns:Selection Pressure and Co-evolutionary Analysis[J]. Plant Science Journal, 2013, 31(5): 429-438. CSTR: 32231.14.SP.J.1142.2013.50429
Citation: XU Ke, WANG Bo, SU Ying-Juan, GAO Lei, WANG Ting. Molecular Evolution of psbD Gene in Ferns:Selection Pressure and Co-evolutionary Analysis[J]. Plant Science Journal, 2013, 31(5): 429-438. CSTR: 32231.14.SP.J.1142.2013.50429

蕨类植物psbD基因的适应性进化和共进化分析

基金项目: 国家自然科学基金资助项目(31070594);湿地演化与生态恢复湖北省重点实验室开放课题。
详细信息
    作者简介:

    许可(1987-),男,硕士研究生,主要从事植物进化遗传学研究(E-mail:xuke09@mails.ucas.ac.cn)。

    通讯作者:

    王艇, E-mail: tingwang@wbgcas.cn

  • 中图分类号: Q941

Molecular Evolution of psbD Gene in Ferns:Selection Pressure and Co-evolutionary Analysis

  • 摘要: D2蛋白是植物光系统Ⅱ复合体(PSⅡ)核心蛋白之一,由叶绿体psbD基因编码。为了深入理解核心薄囊蕨类植物在阴生环境下的“辐射”式演化,我们对12种蕨类植物的psbD基因进行了克隆和测序,然后联合已公布的其他8种蕨类植物的psbD序列,基于ω值(非同义替换率dN和同义替换率dS的比值)探讨了该基因经受的选择压力。发现D2蛋白在大多数分支和位点受到强烈的负选择,但是树蕨类分支的psbD进化速率低且ω值较高。借助多种模型进行的共进化分析显示,树蕨类D2蛋白的168R、245H和272M两两组成具有共进化关系的氨基酸位点对。
    Abstract: The D2 protein of the Photosystem Ⅱ (PSⅡ) reaction center complex is encoded by the chloroplast gene psbD.To gain a better understanding of the adaptive radiation of core leptosporangiate ferns in low-light environments,we sequenced psbD in twelve species and collected eight published sequences to represent extant ferns in order level.We then evaluated the selection pressure of D2 protein based on ω values (nonsynonymous synonymous substitution ratio).The results of statistical tests based on different models indicated that most sites and branches were under strong negative selection,but tree ferns exhibited a slower evolutionary rate and higher ω value compared with other ferns.Co-evolution analysis based on different approaches showed that the D2-R168,D2-H245 and D2-M272 of tree ferns were involved in the same co-evolution network.
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出版历程
  • 收稿日期:  2013-04-16
  • 修回日期:  2013-06-27
  • 发布日期:  2013-10-29

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