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Autor: Abbas, Samar

1 záznamů v Medvik Filtry

Článek

The Tetracentron genome provides insight into the early evolution of eudicots and the formation of vessel elements

Liu, Ping-Li
Autor Liu, Ping-Li Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China College of Biological Sciences & Biotechnology, Beijing Forestry University, Beijing, 100083, China
Zhang, Xi
Autor Zhang, Xi Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China College of Biological Sciences & Biotechnology, Beijing Forestry University, Beijing, 100083, China
Mao, Jian-Feng
Autor Mao, Jian-Feng Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China College of Biological Sciences & Biotechnology, Beijing Forestry University, Beijing, 100083, China
Hong, Yan-Ming
Autor Hong, Yan-Ming Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China College of Biological Sciences & Biotechnology, Beijing Forestry University, Beijing, 100083, China
Zhang, Ren-Gang
Autor Zhang, Ren-Gang Beijing Ori-Gene Science and Technology Co., Ltd, Beijing, 102206, China
E, Yilan
Autor E, Yilan Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China College of Biological Sciences & Biotechnology, Beijing Forestry University, Beijing, 100083, China
Nie, Shuai
Autor Nie, Shuai Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China College of Biological Sciences & Biotechnology, Beijing Forestry University, Beijing, 100083, China
Jia, Kaihua
Autor Jia, Kaihua Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China College of Biological Sciences & Biotechnology, Beijing Forestry University, Beijing, 100083, China
Jiang, Chen-Kun
Autor Jiang, Chen-Kun College of Life Sciences, Peking University, Beijing, 100871, China
He, Jian
Autor He, Jian School of Ecology and Nature conservation, Beijing Forestry University, Beijing, 100083, China

Genome biology. 2020 ; 21 (1) : 291. [pub] 20201202

Genome Biol
ISSN 1474-760X
Medvik
Zdroj

BACKGROUND: Tetracentron sinense is an endemic and endangered deciduous tree. It belongs to the Trochodendrales, one of four early diverging lineages of eudicots known for having vesselless secondary wood. Sequencing and resequencing of the T. sinense genome will help us understand eudicot evolution, the genetic basis of tracheary element development, and the genetic diversity of this relict species. RESULTS: Here, we report a chromosome-scale assembly of the T. sinense genome. We assemble the 1.07 Gb genome sequence into 24 chromosomes and annotate 32,690 protein-coding genes. Phylogenomic analyses verify that the Trochodendrales and core eudicots are sister lineages and showed that two whole-genome duplications occurred in the Trochodendrales approximately 82 and 59 million years ago. Synteny analyses suggest that the γ event, resulting in paleohexaploidy, may have only happened in core eudicots. Interestingly, we find that vessel elements are present in T. sinense, which has two orthologs of AtVND7, the master regulator of vessel formation. T. sinense also has several key genes regulated by or regulating TsVND7.2 and their regulatory relationship resembles that in Arabidopsis thaliana. Resequencing and population genomics reveals high levels of genetic diversity of T. sinense and identifies four refugia in China. CONCLUSIONS: The T. sinense genome provides a unique reference for inferring the early evolution of eudicots and the mechanisms underlying vessel element formation. Population genomics analysis of T. sinense reveals its genetic diversity and geographic structure with implications for conservation.

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