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The chromosome-scale genome of Magnolia officinalis provides insight into the evolutionary position of magnoliids.

ABSTRACT: Magnolia officinalis, a representative tall aromatic tree of the Magnoliaceae family, is a medicinal plant that is widely used in diverse industries from medicine to cosmetics. We report a chromosome-scale draft genome of M. officinalis, in which ∼99.66% of the sequences were anchored onto 19 chromosomes with the scaffold N50 of 76.62 Mb. We found that a high proportion of repetitive sequences was a common feature of three Magnoliaceae with known genomic data. Magnoliids were a sister clade to eudicots-monocots, which provided more support for understanding the phylogenetic position among angiosperms. An ancient duplication event occurred in the genome of M. officinalis and was shared with Lauraceae. Based on RNA-seq analysis, we identified several key enzyme-coding gene families associated with the biosynthesis of lignans in the genome. The construction of the M. officinalis genome sequence will serve as a reference for further studies of Magnolia, as well as other Magnoliaceae.

SUBMITTER: Yin Y

PROVIDER: S-EPMC8417397 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Magnolia officinalis

Project description:Magnolia officinalis Raw sequence reads

| PRJNA752923 | ENA

Magnolia officinalis

Project description:Magnolia officinalis overview

| PRJNA190623 | ENA

Magnolia officinalis isolate:Magnolia | cultivar:officinalis

Project description:Magnolia officinalis isolate:Magnolia | cultivar:officinalis Genome sequencing

| PRJNA755877 | ENA

Cytogenetic and genomic organization analyses of chloroplast DNA invasions in the nuclear genome of Asparagus officinalis L. provides signatures of evolutionary complexity and informativity in sex chromosome evolution.

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| S-EPMC6698032 | biostudies-literature

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