Genomic basis of the giga-chromosomes and giga-genome of tree peony Paeonia ostii

doi:10.1038/s41467-022-35063-1

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	Genomic basis of the giga-chromosomes and giga-genome of tree peony Paeonia ostii
	Yuan, Junhui ; Jiang, Sanjie 6; Jian, Jianbo 6; Liu, Mingyu 5; Yue, Zhen 6; Xu, Jiabao 6; Li, Juan 5; Xu, Chunyan 6; Lin, Lihong 4; Jing, Yi 6
刊名	NATURE COMMUNICATIONS
	2022
卷号	13 期号:1
DOI	10.1038/s41467-022-35063-1
文献子类	Article
英文摘要	Tree peony (Paeonia ostii) is an economically important ornamental plant native to China. It is also notable for its seed oil, which is abundant in unsaturated fatty acids such as alpha-linolenic acid (ALA). Here, we report chromosome-level genome assembly (12.28 Gb) of P. ostii. In contrast to monocots with giant genomes, tree peony does not appear to have undergone lineage-specific whole-genome duplication. Instead, explosive LTR expansion in the intergenic regions within a short period (similar to two million years) may have contributed to the formation of its giga-genome. In addition, expansion of five types of histone encoding genes may have helped maintain the giga-chromosomes. Further, we conduct genome-wide association studies (GWAS) on 448 accessions and show expansion and high expression of several genes in the key nodes of fatty acid biosynthetic pathway, including SAD, FAD2 and FAD3, may function in high level of ALAs synthesis in tree peony seeds. Moreover, by comparing with cultivated tree peony (P. suffruticosa), we show that ectopic expression of class A gene AP1 and reduced expression of class C gene AG may contribute to the formation of petaloid stamens. Genomic resources reported in this study will be valuable for studying chromosome/genome evolution and tree peony breeding.
学科主题	Multidisciplinary Sciences
电子版国际标准刊号	2041-1723
出版地	BERLIN
WOS关键词	PROVIDES INSIGHTS ; PHYLOGENETIC ANALYSIS ; HIGH-ACCURACY ; DRAFT GENOME ; EVOLUTION ; TOOL ; ALIGNMENT ; RNA ; ANNOTATION ; PROGRAM
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	NATURE PORTFOLIO
WOS记录号	WOS:000889930500025
资助机构	Science and Technology Commission of Shanghai Municipality [14DZ2260400, 14JC1403902, 21DZ1202000] ; National Natural Science Foundation of China [31470328] ; Special Fund for Scientific Research of Shanghai Landscaping and City Appearance Administrative Bureau [G222415, G192418, G182407, G182406, G172401G162419, G152424, G142435]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/28711]
专题	系统与进化植物学国家重点实验室
作者单位	1.Northwest A&F Univ, Coll Landscape Architecture & Arts, Yangling, Shaanxi, Peoples R China 2.Shanghai Normal Univ, Coll Life Sci, Shanghai, Peoples R China 3.Chinese Acad Sci, Univ CAS, Shanghai Inst Plant Physiol & Ecol, State Key Lab Plant Mol Genet,CAS Ctr Excellence, Shanghai, Peoples R China 4.Qingdao Agr Univ, Coll Land Scape Architecture & Forestry, Qingdao, Shandong, Peoples R China 5.BGI Shenzhen, BGI Genom, Shenzhen, Guangdong, Peoples R China 6.Chinese Acad Sci, Shanghai Chenshan Plant Sci Res Ctr, Shanghai Key Lab Plant Funct Genom & Resources, Shanghai Chenshan Bot Garden, Shanghai 201602, Peoples R China 7.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Junhui,Jiang, Sanjie,Jian, Jianbo,et al. Genomic basis of the giga-chromosomes and giga-genome of tree peony Paeonia ostii[J]. NATURE COMMUNICATIONS,2022,13(1).
APA	Yuan, Junhui.,Jiang, Sanjie.,Jian, Jianbo.,Liu, Mingyu.,Yue, Zhen.,...&Hu, Yonghong.(2022).Genomic basis of the giga-chromosomes and giga-genome of tree peony Paeonia ostii.NATURE COMMUNICATIONS,13(1).
MLA	Yuan, Junhui,et al."Genomic basis of the giga-chromosomes and giga-genome of tree peony Paeonia ostii".NATURE COMMUNICATIONS 13.1(2022).