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利用生命之树与生物学大数据探索被子植物多样性.pdf

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1、Miao Sun|孙苗Explore the Angiosperm Diversity Using the Tree of Life and Biological Big Data利用生命利用生命之树与生物学大数据探索被子植物多样性之树与生物学大数据探索被子植物多样性12025.8.24-8.26|哈尔滨第九届全国生物多样性信息学研讨会OutlinesTree of LifeBiological Big DataApplications of Tree of Life(My research cases)2生命之树Tree of Life“Family tree”tree-like topol

2、ogies to describe the relationshipsPhylogenetic tree系统发育树 1.Tree of LifeSoltis&Soltis,20193 Root/unroot;branchingpattern;common ancestors Extinct taxa not include(fossil)Various equivalent styles Bipartition tree;complex network Hypotheses,not definitive factsTree of Life4Trend of Sequence Generatio

3、nSanger seq.Genomic dataWang et al.(2024)A few loci-Genome skimming A few loci-Genome skimming-Transcriptomes Transcriptomes-WGSWGSPlastid genePlastid gene/MMitochondrialitochondrial(maternalmaternal)-Nuclear genes-Nuclear genes (biparental(biparental)5Dawn of the Nuclear PhylogenomicsJohnson et al.

4、(2019)Zuntini etZuntini et al.al.(20242024)Leebens-Mack et al.(2019)6Mega-phylogeny3,646,220-taxon tree of life of seed plant3,646,220-taxon tree of life of seed plantPhylogenomics(1KP,PAFTOL)PyPHLAWDPyPHLAWDClustersWCVPNCBISun et al.(unpublished)7phylogenomic backbonebased on genomes and transcript

5、omes2.Biological Big DataBig data is often characterised by the 3Vs:the large volume volume(数据体量)the wide variety variety(数据类型)the velocity velocity(产生速度)Biological big data cater to the needs of biological research,including-omics;traits,spatial data,species names,etc NLP related.ComputationcostDat

6、a incomplete Data HeterogeneityDatastorageUncertaintyScalabilityOptimizationChallengesin biological big dataSmall data is for people;Big data is for machines.893.Applications of Tree of Life3.Applications of Tree of LifeTree of Life is a PlatformConservation and BiodiversityClimate changeEcosystemCr

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1. **生命之树(Tree of Life)**:系统发育树描述物种关系,从Sanger测序到基因组学(如1KP、PAFTOL),构建包含364万种子植物的巨型系统发育树。 2. **生物学大数据**:具3V特征(体量、类型、速度),挑战包括存储、异构性和计算优化,需机器学习处理。 3. **应用案例**: - **网状进化**:通过基因组数据揭示COM分支的古老杂交事件(Sun et al., 2015)。 - **全球分化格局**:20,194个蔷薇目物种分析显示,热带物种分化速率显著低于非热带,与全球冷却相关(Sun et al., 2020)。 - **保护生物学**:构建中国26,978个被子植物系统发育树,识别3000余个未列入红色名录的濒危物种,建议优化保护区策略(Lu et al., 2018)。 4. **意义**:生命之树是生物多样性度量、进化历史解析及药物/作物改良的核心平台。
**生命之树是什么?** **大数据如何助力生物研究?** **植物多样性格局如何形成?**
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