Genome Sequence and Evolution of Betula Platyphylla

Overview

Journal Hortic Res

Publisher Oxford University Press

Date 2021 Feb 12

PMID 33574224

Citations 38

Authors

Su Chen

Yucheng Wang

Lili Yu

Tao Zheng

Sui Wang

Zhen Yue

Jing Jiang

Sapna Kumari

Chunfang Zheng

Haibao Tang

Jun Li

Yuqi Li

Jiongjiong Chen

Wenbo Zhang

Hanhui Kuang

Jon S Robertson

Patrick X Zhao

Huiyu Li

Shengqiang Shu

Yordan S Yordanov

Haijiao Huang

David M Goodstein

Ying Gai

Qi Qi

Jiumeng Min

ChunYan Xu

Songbo Wang

Guan-Zheng Qu

Andrew H Paterson

David Sankoff

Hairong Wei

Guifeng Liu

Chuanping Yang

Affiliations

Soon will be listed here.

Abstract

Betula L. (birch) is a pioneer hardwood tree species with ecological, economic, and evolutionary importance in the Northern Hemisphere. We sequenced the Betula platyphylla genome and assembled the sequences into 14 chromosomes. The Betula genome lacks evidence of recent whole-genome duplication and has the same paleoploidy level as Vitis vinifera and Prunus mume. Phylogenetic analysis of lignin pathway genes coupled with tissue-specific expression patterns provided clues for understanding the formation of higher ratios of syringyl to guaiacyl lignin observed in Betula species. Our transcriptome analysis of leaf tissues under a time-series cold stress experiment revealed the presence of the MEKK1-MKK2-MPK4 cascade and six additional mitogen-activated protein kinases that can be linked to a gene regulatory network involving many transcription factors and cold tolerance genes. Our genomic and transcriptome analyses provide insight into the structures, features, and evolution of the B. platyphylla genome. The chromosome-level genome and gene resources of B. platyphylla obtained in this study will facilitate the identification of important and essential genes governing important traits of trees and genetic improvement of B. platyphylla.

Citing Articles

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