Chromosomal-level reference genome of the incense tree Aquilaria sinensis.

Molecular Ecology Resources
Wenyan NongJerome H L Hui

Abstract

Trees in the genus Aquilaria (Thymelaeaceae) are known as lign aloes, and are native to the forests of southeast Asia. Lign aloes produce agarwood as an antimicrobial defence. Agarwood has a long history of cultural and medicinal use, and is of considerable commercial value. However, due to habitat destruction and over collection, lign aloes are threatened in the wild. We present a chromosomal-level assembly for Aquilaria sinensis, a lign aloe endemic to China known as the incense tree, based on Illumina short-read, 10X Genomics linked-read, and Hi-C sequencing data. Our 783.8 Mbp A. sinensis genome assembly is of high physical contiguity, with a scaffold N50 of 87.6 Mbp, and high completeness, with a 95.8% BUSCO score for eudicotyledon genes. We include 17 transcriptomes from various plant tissues, providing a total of 35,965 gene models. We reveal the first complete set of genes involved in sesquiterpenoid production, plant defence, and agarwood production for the genus Aquilaria, including genes involved in the biosynthesis of sesquiterpenoids via the mevalonic acid (MVA), 1-deoxy-D-xylulose-5-phosphate (DXP), and methylerythritol phosphate (MEP) pathways. We perform a detailed repeat content analysis, revealing that transpo...Continue Reading

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Methods Mentioned

BETA
electrophoresis
PCR
HiC
proximity ligation

Software Mentioned

Evidence Modeler
blastx
Hi
Trinity
RepeatMasker
GeneMark
funannotate
ggplot2
recon
HiRise

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