收稿日期: 2017-05-25
修回日期: 2017-09-04
网络出版日期: 2017-12-22
基金资助
南京林业大学高层次人才科研启动基金项目(GXL2014070);南京林业大学优秀博士学位论文创新基金项目;江苏省普通高校研究生科研创新计划项目(KYLX16_0857);江苏省高校优势学科建设工程项目(PAPD)资助
Progress in plant paleogenomics
Received date: 2017-05-25
Revised date: 2017-09-04
Online published: 2017-12-22
Supported by
the Initiative Project for Talents of Nanjing Forestry University(GXL2014070);the Doctorate Fellowship Foundation of Nanjing Forestry University;the Research Fund for Postgraduate Innovation Project of Jiangsu Province(KYLX16_0857);the Priority Academic Program Development of Jiangsu High Education Institutions (PAPD)
植物古基因组学是基因组学一个新兴分支,从现存物种中重建其祖先基因组,推断在古历史中导致形成现存物种的进化或物种形成事件。高通量测序技术的不断革新使测序读长更长、更准确,加快了植物参考基因组序列的组装进程,为古基因组学研究提供了大批量可靠的现存物种的基因组序列资源。全基因组复制(whole-genome duplication, WGD)亦称古多倍化,使植物基因组快速重组,丢失大量基因,增加结构变异,对植物进化极其重要。本文综述了植物基因组测序与组装研究进展、植物古基因组学的原理、植物基因组WGD事件以及植物祖先基因组进化场景,并对未来植物古基因组学研究进行了展望。
张太奎, 苑兆和 . 植物古基因组学研究进展[J]. 遗传, 2018 , 40(1) : 44 -56 . DOI: 10.16288/j.yczz.17-191
As a new branch of genomics, plant paleogenomics reconstructs ancestral genomes from actual modern species and infers palaeohistory, evolutionary and/or speciation events that have shaped the modern species. Advances in high-throughput sequencing technologies yield accurate long reads, promote the progress of plant genome sequence assembly, and thereby offer paleogenomics a large collection of valuable reference genomes from modern species. Whole-genome duplication (WGD) and polyploidization cause rapid genomic reorganization, massive gene losses and structural variations. WGD events are therefore central to plant evolution. In this review, we summarize recent progress in sequencing and assembly of plant genomes, principles of plant paleogenomics, WGD events in plant genomes, and the most likely evolutionary scenario in plants. Furthermore, we highlight some of the challenges as well as future directions.
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