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bioRxiv · 10.1101/2024.01.07.574508

Chromosome-scale genome assembly of Camellia crapnelliana provides insights into the fatty acid biosynthesis

Gao, L.-z.·Zhang, F.·Feng, L.-y.·Lin, P.-f.·Jia, J.-j.
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Abstract

Camellia crapnelliana Tutch., belonging to the Theaceae family, is an excellent landscape tree species with high ornamental value. It is particularly an important woody oil-bearing plant with high ecological, economic, and medicinal values. Here, we first report the chromosome-scale reference genome of C. crapnelliana with integrated technologies of SMRT, Hi-C and Illumina sequencing platforms. The genome assembly had a total length of [~]2.94 Gb with contig N50 of [~]67.5 Mb, and [~]96.34% of contigs were assigned to 15 chromosomes. In total, we predicted 37,390 protein-coding genes, [~]99.00% of which were functionally annotated. Comparative genomic analysis showed that the C. crapnelliana genome underwent a whole-genome duplication event shared across the Camellia species and an {gamma} -WGT event that was shared by all core eudicot plants. Furthermore, we identified the major genes involved in the biosynthesis of oleic acids and terpenoids in C. crapnelliana. The chromosome-scale genome of C. crapnelliana will become valuable resources for understanding the genetic basis of the fatty acid biosynthesis, and greatly facilitate the exploration and conservation of C. crapnelliana.

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Gao, L.-z., Zhang, F., Feng, L.-y., Lin, P.-f., Jia, J.-j.. 2024-01-08. Chromosome-scale genome assembly of Camellia crapnelliana provides insights into the fatty acid biosynthesis. https://doi.org/10.1101/2024.01.07.574508

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