Chromosome-level reference genome of stinkwort, Dittrichia graveolens (L.) Greuter: A resource for studies on invasion, range expansion, and evolutionary adaptation under global change.
Chromosome-level reference genome of stinkwort, Dittrichia graveolens (L.) Greuter: A resource for studies on invasion, range expansion, and evolutionary adaptation under global change.
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DOI：
10.1093/jhered/esad033
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发表时间：
2023-08-23
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Dittrichia graveolens（L.）臭草是菊科的一种一年生杂草。该物种被认为是其本土和引进范围的迅速扩张：在欧洲，自世纪中期以来，它已将其本土分布从地中海盆地向北扩展了近7 °C的纬度，而在加州和澳大利亚，该植物是一种令人关注的入侵杂草。在这里，我们提出了第一个从头D。graveolens基因组组装（1 N = 9条染色体），包括完整的叶绿体（151，013 bp）和部分线粒体基因组（22，084 bp），使用Pacific Biosciences HiFi reads和Dovetail Omni-C数据创建。最终的初级组装体长度为835 Mbp，其中98.1%由范围从66至119 Mbp的9个支架代表。重叠群N50为74.9 Mbp，支架N50为96.9 Mbp，加上基于包含1，614个直系同源物的BUSCO胚胎植物10数据库的98.8%完整性，强调了该组装的高质量。这种伪分子规模的基因组组装是一个宝贵的资源，为我们的基本理解的范围扩大的全球变化下的基因组后果，以及比较基因组研究在菊科。
Dittrichia graveolens (L.) Greuter, or stinkwort, is a weedy annual plant within the family Asteraceae. The species is recognized for the rapid expansion of both its native and introduced ranges: in Europe, it has expanded its native distribution northward from the Mediterranean basin by nearly 7 °C latitude since the mid-20th century, while in California and Australia the plant is an invasive weed of concern. Here, we present the first de novo D. graveolens genome assembly (1N = 9 chromosomes), including complete chloroplast (151,013 bp) and partial mitochondrial genomes (22,084 bp), created using Pacific Biosciences HiFi reads and Dovetail Omni-C data. The final primary assembly is 835 Mbp in length, of which 98.1% are represented by 9 scaffolds ranging from 66 to 119 Mbp. The contig N50 is 74.9 Mbp and the scaffold N50 is 96.9 Mbp, which, together with a 98.8% completeness based on the BUSCO embryophyta10 database containing 1,614 orthologs, underscores the high quality of this assembly. This pseudo-molecule-scale genome assembly is a valuable resource for our fundamental understanding of the genomic consequences of range expansion under global change, as well as comparative genomic studies in the Asteraceae.
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