干旱区生态环境知识资源中心(Arid): Chromosome-level genome assembly of a xerophytic plant, Haloxylon ammodendron

Arid

DOI	10.1093/dnares/dsac006
	Chromosome-level genome assembly of a xerophytic plant, Haloxylon ammodendron
	Wang, Mingcheng; Zhang, Lei; Tong, Shaofei; Jiang, Dechun; Fu, Zhixi
通讯作者	Jiang, DC
来源期刊	DNA RESEARCH
ISSN	1340-2838
EISSN	1756-1663
出版年	2022
卷号	29 期号:2
英文摘要	Haloxylon ammodendron is a xerophytic perennial shrub or small tree that has a high ecological value in anti-desertification due to its high tolerance to drought and salt stress. Here, we report a high-quality, chromosome-level genome assembly of H. ammodendron by integrating PacBio's high-fidelity sequencing and Hi-C technology. The assembled genome size was 685.4 Mb, of which 99.6% was assigned to nine pseudochromosomes with a contig N50 value of 23.6 Mb. Evolutionary analysis showed that both the recent substantial amplification of long terminal repeat retrotransposons and tandem gene duplication may have contributed to its genome size expansion and arid adaptation. An ample amount of low-GC genes was closely related to functions that may contribute to the desert adaptation of H. ammodendron. Gene family clustering together with gene expression analysis identified differentially expressed genes that may play important roles in the direct response of H. ammodendron to water-deficit stress. We also identified several genes possibly related to the degraded scaly leaves and well-developed root system of H. ammodendron. The reference-level genome assembly presented here will provide a valuable genomic resource for studying the genome evolution of xerophytic plants, as well as for further genetic breeding studies of H. ammodendron.
英文关键词	Haloxylon ammodendron desert adaptation xerophyte PacBio's high-fidelity sequencing genome assembly
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000772583700001
WOS关键词	PHYLOGENETIC ANALYSIS ; DROUGHT TOLERANCE ; SEED-GERMINATION ; ARABIDOPSIS ; ALIGNMENT ; SEQUENCE ; EXPRESSION ; GENE ; TOOL ; ANNOTATION
WOS类目	Genetics & Heredity
WOS研究方向	Genetics & Heredity
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392256
推荐引用方式 GB/T 7714	Wang, Mingcheng,Zhang, Lei,Tong, Shaofei,et al. Chromosome-level genome assembly of a xerophytic plant, Haloxylon ammodendron[J],2022,29(2).
APA	Wang, Mingcheng,Zhang, Lei,Tong, Shaofei,Jiang, Dechun,&Fu, Zhixi.(2022).Chromosome-level genome assembly of a xerophytic plant, Haloxylon ammodendron.DNA RESEARCH,29(2).
MLA	Wang, Mingcheng,et al."Chromosome-level genome assembly of a xerophytic plant, Haloxylon ammodendron".DNA RESEARCH 29.2(2022).