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

Autor: Yanpeng Yin, Fu Peng, Luojing Zhou, Xianmei Yin, Junren Chen, Hongjin Zhong, Feixia Hou, Xiaofang Xie, Li Wang, Xiaodong Shi, Bo Ren, Jin Pei, Cheng Peng, Jihai Gao
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: iScience, Vol 24, Iss 9, Pp 102997- (2021)
Druh dokumentu: article
ISSN: 2589-0042
DOI: 10.1016/j.isci.2021.102997
Popis: Summary: 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.
Databáze: Directory of Open Access Journals