Phylogeographic inference using genomic sequence data under the multispecies coalescent model
多物种合并模型下使用基因组序列数据进行系统发育地理学推断
基本信息
- 批准号:BB/P006493/1
- 负责人:
- 金额:$ 50.8万
- 依托单位:
- 依托单位国家:英国
- 项目类别:Research Grant
- 财政年份:2017
- 资助国家:英国
- 起止时间:2017 至 无数据
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Our evolutionary history is written in our genomes. By comparing DNA sequences from different species or multiple individuals of the same species we can work out how the species are related, when they diverged from each other, whether there was introgression between the species, and whether the population size of a species went through a bottleneck or other demographic changes. DNA sequences can also be used to identify species and delineate species boundaries. To address such exciting questions, powerful statistical methods and computational algorithms are necessary. In this project we will develop new statistical models and computer algorithms for efficient analysis of genomic sequence data within two well-established statistical frameworks: maximum likelihood and Bayesian inference. We will develop a maximum likelihood method for estimating the species tree that accommodates the random process of biological reproduction and genetic sequence evolution, as well as introgression or hybridisation that may be common between closely related species, especially during radiative speciations. We will introduce significant improvements and extensions to our Bayesian model-comparison approach to delimiting species using genomic sequence data. We will implement sophisticated models to describe the evolutionary process of DNA sequences and to allow changes in the evolutionary rate among lineages so that the program can be applied to estimate species phylogenies for distantly related species, such as different orders of mammals. We will parallelize the program to improve the computational efficiency.
我们的进化史写在我们的基因组里。通过比较不同物种或同一物种的多个个体的DNA序列,我们可以弄清楚物种之间是如何联系的,它们是何时分化的,物种之间是否存在渗入,以及一个物种的种群规模是否经历了瓶颈或其他人口统计学变化。DNA序列也可以用来识别物种和划定物种边界。为了解决这些令人兴奋的问题,强大的统计方法和计算算法是必要的。在这个项目中,我们将开发新的统计模型和计算机算法,以便在最大似然和贝叶斯推理这两个已建立的统计框架内有效地分析基因组序列数据。我们将开发一种最大似然方法来估计物种树,以适应生物繁殖和遗传序列进化的随机过程,以及可能在密切相关的物种之间常见的渗入或杂交,特别是在辐射物种形成期间。我们将介绍贝叶斯模型比较方法的重大改进和扩展,以使用基因组序列数据来划分物种。我们将实现复杂的模型来描述DNA序列的进化过程,并允许谱系之间进化速率的变化,以便该程序可以应用于估计远亲物种(如不同目的哺乳动物)的物种系统发育。我们将并行化程序以提高计算效率。
项目成果
期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
A Bayesian implementation of the multispecies coalescent model with introgression for comparative genomic analysis
- DOI:10.1101/766741
- 发表时间:2019-09
- 期刊:
- 影响因子:0
- 作者:Thomas Flouris;Xiyun Jiao;B. Rannala;Ziheng Yang
- 通讯作者:Thomas Flouris;Xiyun Jiao;B. Rannala;Ziheng Yang
The asymptotic behavior of bootstrap support values in molecular phylogenetics.
- DOI:10.1093/sysbio/syaa100
- 发表时间:2020-12
- 期刊:
- 影响因子:6.5
- 作者:Jun Huang;Yuting Liu;Tianqi Zhu;Ziheng Yang
- 通讯作者:Jun Huang;Yuting Liu;Tianqi Zhu;Ziheng Yang
Bayesian Phylogenetic Inference using Relaxed-clocks and the Multispecies Coalescent.
- DOI:10.1093/molbev/msac161
- 发表时间:2022-08-03
- 期刊:
- 影响因子:10.7
- 作者:Flouri, Tomas;Huang, Jun;Jiao, Xiyun;Kapli, Paschalia;Rannala, Bruce;Yang, Ziheng
- 通讯作者:Yang, Ziheng
Multispecies coalescent and its applications to infer species phylogenies and cross-species gene flow.
- DOI:10.1093/nsr/nwab127
- 发表时间:2021-12
- 期刊:
- 影响因子:20.6
- 作者:Jiao X;Flouri T;Yang Z
- 通讯作者:Yang Z
The Impact of Cross-Species Gene Flow on Species Tree Estimation
- DOI:10.1101/820019
- 发表时间:2019-10
- 期刊:
- 影响因子:0
- 作者:Xiyun Jiao;Thomas Flouris;B. Rannala;Ziheng Yang
- 通讯作者:Xiyun Jiao;Thomas Flouris;B. Rannala;Ziheng Yang
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Ziheng Yang其他文献
A space-time process model for the evolution of DNA sequences.
- DOI:
10.1093/genetics/139.2.993 - 发表时间:
1995-02 - 期刊:
- 影响因子:3.3
- 作者:
Ziheng Yang - 通讯作者:
Ziheng Yang
Evolutionary rate variation among vertebrate beta globin genes: implications for dating gene family duplication events.
脊椎动物β珠蛋白基因之间的进化率变异:对基因家族重复事件测年的影响。
- DOI:
- 发表时间:
2006 - 期刊:
- 影响因子:3.5
- 作者:
Gabriela Aguileta;J. Bielawski;Ziheng Yang - 通讯作者:
Ziheng Yang
A heuristic rate smoothing procedure for maximum likelihood estimation of species divergence times
物种分化时间最大似然估计的启发式速率平滑程序
- DOI:
- 发表时间:
2004 - 期刊:
- 影响因子:0
- 作者:
Ziheng Yang - 通讯作者:
Ziheng Yang
Maximum-likelihood models for combined analyses of multiple sequence data
- DOI:
10.1007/bf02352289 - 发表时间:
1996-05 - 期刊:
- 影响因子:3.9
- 作者:
Ziheng Yang - 通讯作者:
Ziheng Yang
Ziheng Yang的其他文献
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{{ truncateString('Ziheng Yang', 18)}}的其他基金
Efficient computational technologies to resolve the Timetree of Life: from ancient DNA to species-rich phylogenies
高效计算技术解析生命时间树:从古代 DNA 到物种丰富的系统发育
- 批准号:
BB/Y004132/1 - 财政年份:2024
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
PAML 5: A friendly and powerful bioinformatics resource for phylogenomics
PAML 5:用于系统基因组学的友好且强大的生物信息学资源
- 批准号:
BB/X018571/1 - 财政年份:2024
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
NSFDEB-NERC: Integrating computational, phenotypic, and population-genomic approaches to reveal processes of cryptic speciation and gene flow in Madag
NSFDEB-NERC:整合计算、表型和群体基因组方法来揭示马达格神秘物种形成和基因流的过程
- 批准号:
NE/X002071/1 - 财政年份:2023
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
Bayesian inference of the mode of speciation and gene flow using genomic data
使用基因组数据对物种形成和基因流模式进行贝叶斯推断
- 批准号:
BB/X007553/1 - 财政年份:2023
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
Bayesian implementation of the multispecies-coalescent-with-introgression (MSci) model for analysis of population genomic data
用于群体基因组数据分析的多物种合并渗入 (MSci) 模型的贝叶斯实施
- 批准号:
BB/T003502/1 - 财政年份:2020
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
Efficient Bayesian phylogenomic dating with new models of trait evolution and rich diversities of living and fossil species
利用性状进化的新模型以及活体和化石物种的丰富多样性进行有效的贝叶斯系统发育测定
- 批准号:
BB/T012951/1 - 财政年份:2020
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
Improving Bayesian methods for estimating divergence times integrating genomic and trait data
改进贝叶斯方法来估计整合基因组和性状数据的分歧时间
- 批准号:
BB/N000609/1 - 财政年份:2016
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
Statistical Methods for Genomic Analysis of Species Divergences
物种差异基因组分析的统计方法
- 批准号:
BB/K000896/1 - 财政年份:2013
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
Bayesian Estimation of Species Divergence Times Integrating Fossil and Molecular Information
整合化石和分子信息的物种分化时间的贝叶斯估计
- 批准号:
BB/J009709/1 - 财政年份:2012
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
Representation and Incorporation of Fossil Data in Molecular Dating of Species Divergences
化石数据在物种分歧分子测年中的表示和结合
- 批准号:
BB/G006431/1 - 财政年份:2009
- 资助金额:
$ 50.8万 - 项目类别:
Research Grant
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