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The Phoebe genome sheds light on the evolution of magnoliids

文献类型： 外文期刊

作者： Chen, Shi-Pin 1 ; Sun, Wei-Hong 1 ; Xiong, Yuan-Fang 1 ; Jiang, Yu-Ting 1 ; Liu, Xue-Die 1 ; Liao, Xing-Yu 1 ; Zhang, 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Forestry, Fuzhou 350002, Peoples R China

2.Fujian Agr & Forestry Univ, Coll Landscape Architecture, Key Lab Natl Forestry & Grassland Adm Orchid Cons, Fuzhou 350002, Peoples R China

3.PubBio Tech, Wuhan 430070, Peoples R China

4.Zhejiang Acad Agr Sci, Zhejiang Inst Subtrop Crops, Wenzhou 325005, Peoples R China

5.Shandong Acad Agr Sci, Inst Vegetable & Flowers, Jinan 250100, Peoples R China

期刊名称：HORTICULTURE RESEARCH （ 影响因子：6.793； 五年影响因子：6.589 ）

ISSN： 2662-6810

年卷期： 2020 年 7 卷 1 期

页码：

收录情况： SCI

摘要： Lauraceae includes the genus Phoebe, and the family is linked to the evolution of magnoliids. We sequenced the genome of Phoebe bournei Nanmu. The assembled genome size was 989.19Mb, with a contig N50 value of 2.05Mb. A total of 28,198 protein-coding genes were annotated in P. bournei. Whole-genome duplication (WGD) analysis showed that Lauraceae has experienced two WGD events; the older WGD event occurred just before the divergence of Lauraceae and Magnoliales, and the more recent WGD was shared by all lineages of Lauraceae. The phylogenetic tree showed that magnoliids form a sister clade to monocots and eudicots. We also identified 63 MADS-box genes, including AGL12-like genes that may be related to the regulation of P. bournei roots and FIN219-like genes encoding GH3 proteins, which are involved in photomorphogenesis. SAUR50-like genes involved in light signal-mediated pedicel or stem development were also identified. Four ATMYB46- and three PtrEPSP-homologous genes related to lignin biosynthesis were identified. These genes may be associated with the formation of straight trunks in P. bournei. Overall, the P. bournei reference genome provides insight into the origin, evolution, and diversification of Phoebe and other magnoliids.

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