Volume 24, No 10, Oct 2014

ISSN: 1001-0602 
EISSN: 1748-7838 2018 
impact factor 17.848* 
(Clarivate Analytics, 2019)

Volume 24 Issue 10, October 2014: 1274-1277   |  Open Access

LETTERS TO THE EDITOR

The willow genome and divergent evolution from poplar after the common genome duplication

Xiaogang Dai^1,*, Quanjun Hu^2,*, Qingle Cai^3,*, Kai Feng^1,*, Ning Ye^1,*, Gerald A Tuskan^4,*, Richard Milne⁵, Yingnan Chen¹, Zhibing Wan¹, Zefu Wang², Wenchun Luo², Kun Wang², Dongshi Wan², Mingxiu Wang¹, Jun Wang³, Jianquan Liu² and Tongming Yin¹

¹The Southern Modern Forestry Collaborative Innovation Center, Nanjing Forestry University, Nanjing 210037, China
²State Key Laboratory of Grassland Agro-Ecosystem, College of Life Science, Lanzhou University, Lanzhou 730000, China
³BGI-Shenzhen, Shenzhen 518083, China
⁴Bio-Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
⁵Institute of Molecular Plant Science, The University of Edinburgh, Daniel Rutherford Building, King's Buildings, Mayfield Road, Edinburgh EH9, 3JH, UK Correspondence: Tongming Yin, E-mail: tmyin@njfu.edu.cn; Jianquan Liu, E-mail: liujq@lzu.edu.cn; Jun Wang,(wangj@genomics.org.cn)

Willows (Salix) and poplars (Populus) are known worldwide as woody species with diverse uses1,2. Although these two genera diverged from each other around the early Eocene3, they share numerous traits, including the same chromosome number of 2n = 38 and the common 'Salicoid' genome duplication with a high macrosynteny4,5. However, most willow species flower early in their lives with short, small and sometimes indistinct stems, and thus differ from poplars in their life histories and habits2. In addition, multiple inter- and intrachromosomal rearrangements have been detected involving chromosomal regions present in both lineages6, suggestive of the likely genomic divergence after the common genome duplication.

10.1038/cr.2014.83

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